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class="pagination-link " aria-label="Page 5" aria-current="page">5 </a> </li> </ul> </nav> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.00136">arXiv:2407.00136</a> <span> [<a href="https://arxiv.org/pdf/2407.00136">pdf</a>, <a href="https://arxiv.org/format/2407.00136">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Observation of the Electromagnetic Dalitz Transition $h_c \rightarrow e^+e^-畏_c$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+M">M. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+X+H">X. H. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Ferroli%2C+R+B">R. Baldini Ferroli</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (495 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.00136v2-abstract-short" style="display: inline;"> Using $(27.12\pm 0.14)\times10^8$ $蠄(3686)$ decays and data samples of $e^+e^-$ collisions with $\sqrt{s}$ from 4.130 to 4.780~GeV collected with the BESIII detector, we report the first observation of the electromagnetic Dalitz transition $h_c\to e^+e^-畏_c$ with a statistical significance of $5.4蟽$. We measure the ratio of the branching fractions… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.00136v2-abstract-full').style.display = 'inline'; document.getElementById('2407.00136v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.00136v2-abstract-full" style="display: none;"> Using $(27.12\pm 0.14)\times10^8$ $蠄(3686)$ decays and data samples of $e^+e^-$ collisions with $\sqrt{s}$ from 4.130 to 4.780~GeV collected with the BESIII detector, we report the first observation of the electromagnetic Dalitz transition $h_c\to e^+e^-畏_c$ with a statistical significance of $5.4蟽$. We measure the ratio of the branching fractions $\frac{\mathcal{B}(h_c\rightarrow e^+e^-畏_c)}{\mathcal{B}(h_c\rightarrow 纬畏_c)}$ separately for the $h_c$ samples produced via $蠄(3686)\to蟺^0h_c$ and $e^+e^-\to蟺^+蟺^-h_c$. The average ratio is determined to be $(0.59\pm0.10(\text{stat.})\pm0.04(\text{syst.}))\%$, where the uncertainty includes both statistical and systematic components. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.00136v2-abstract-full').style.display = 'none'; document.getElementById('2407.00136v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.12809">arXiv:2405.12809</a> <span> [<a href="https://arxiv.org/pdf/2405.12809">pdf</a>, <a href="https://arxiv.org/format/2405.12809">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Precision measurement of the branching fraction of \boldmath $J/蠄\rightarrow K^+K^-$ via $蠄(2S)\rightarrow 蟺^+蟺^-J/蠄$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.12809v1-abstract-short" style="display: inline;"> Using a sample of $448.1 \times 10^6$ $蠄(2S)$ events collected with the BESIII detector, we perform a study of the decay $J/蠄\rightarrow K^+K^-$ via $蠄(2S)\rightarrow 蟺^+蟺^-J/蠄$. The branching fraction of $J/蠄\rightarrow K^+K^-$ is determined to be $\mathcal{B}_{K^+K^-}=(3.072\pm 0.023({\rm stat.})\pm 0.050({\rm syst.}))\times 10^{-4}$, which is consistent with previous measurements but with sig… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.12809v1-abstract-full').style.display = 'inline'; document.getElementById('2405.12809v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.12809v1-abstract-full" style="display: none;"> Using a sample of $448.1 \times 10^6$ $蠄(2S)$ events collected with the BESIII detector, we perform a study of the decay $J/蠄\rightarrow K^+K^-$ via $蠄(2S)\rightarrow 蟺^+蟺^-J/蠄$. The branching fraction of $J/蠄\rightarrow K^+K^-$ is determined to be $\mathcal{B}_{K^+K^-}=(3.072\pm 0.023({\rm stat.})\pm 0.050({\rm syst.}))\times 10^{-4}$, which is consistent with previous measurements but with significantly improved precision. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.12809v1-abstract-full').style.display = 'none'; document.getElementById('2405.12809v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">to be submitted to PRD</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.09066">arXiv:2405.09066</a> <span> [<a href="https://arxiv.org/pdf/2405.09066">pdf</a>, <a href="https://arxiv.org/format/2405.09066">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for the leptonic decays $D^{*+}\to e^+谓_e$ and $D^{*+}\to 渭^+谓_渭$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+M">M. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Ferroli%2C+R+B">R. Baldini Ferroli</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+D">D. Becker</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a> , et al. (559 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.09066v1-abstract-short" style="display: inline;"> We present the first search for the leptonic decays $D^{*+}\to e^+谓_e$ and $D^{*+}\to 渭^+谓_渭$ by analyzing a data sample of electron-positron collisions recorded with the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, corresponding to an integrated luminosity of 6.32~fb$^{-1}$. No significant signal is observed. The upper limits on the branching fractions for… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.09066v1-abstract-full').style.display = 'inline'; document.getElementById('2405.09066v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.09066v1-abstract-full" style="display: none;"> We present the first search for the leptonic decays $D^{*+}\to e^+谓_e$ and $D^{*+}\to 渭^+谓_渭$ by analyzing a data sample of electron-positron collisions recorded with the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, corresponding to an integrated luminosity of 6.32~fb$^{-1}$. No significant signal is observed. The upper limits on the branching fractions for $D^{*+}\to e^+谓_e$ and $D^{*+}\to 渭^+谓_渭$ are set to be $1.1 \times 10^{-5}$ and $4.3 \times 10^{-6}$ at 90\% confidence level, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.09066v1-abstract-full').style.display = 'none'; document.getElementById('2405.09066v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 7 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.07741">arXiv:2405.07741</a> <span> [<a href="https://arxiv.org/pdf/2405.07741">pdf</a>, <a href="https://arxiv.org/format/2405.07741">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.110.012012">10.1103/PhysRevD.110.012012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for the radiative transition $蠂_{c1}(3872)\to纬蠄_2(3823)$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a> , et al. (635 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.07741v2-abstract-short" style="display: inline;"> Using 9.0 $\rm fb^{-1}$ of $e^+e^-$ collision data collected at center-of-mass energies from 4.178 to 4.278 GeV with the BESIII detector at the BEPCII collider, we perform the first search for the radiative transition $蠂_{c1}(3872)\to纬蠄_2(3823)$. No $蠂_{c1}(3872)\to纬蠄_2(3823)$ signal is observed. The upper limit on the ratio of branching fractions… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.07741v2-abstract-full').style.display = 'inline'; document.getElementById('2405.07741v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.07741v2-abstract-full" style="display: none;"> Using 9.0 $\rm fb^{-1}$ of $e^+e^-$ collision data collected at center-of-mass energies from 4.178 to 4.278 GeV with the BESIII detector at the BEPCII collider, we perform the first search for the radiative transition $蠂_{c1}(3872)\to纬蠄_2(3823)$. No $蠂_{c1}(3872)\to纬蠄_2(3823)$ signal is observed. The upper limit on the ratio of branching fractions $\mathcal{B}(蠂_{c1}(3872)\to纬蠄_2(3823), 蠄_2(3823)\to纬蠂_{c1})/\mathcal{B}(蠂_{c1}(3872)\to蟺^+蟺^- J/蠄)$ is set as 0.075 at the 90\% confidence level. Our result contradicts theoretical predictions under the assumption that the $蠂_{c1}(3872)$ is the pure charmonium state $蠂_{c1}(2P)$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.07741v2-abstract-full').style.display = 'none'; document.getElementById('2405.07741v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 110, 012012 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.07436">arXiv:2404.07436</a> <span> [<a href="https://arxiv.org/pdf/2404.07436">pdf</a>, <a href="https://arxiv.org/format/2404.07436">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of $e^{+}e^{-}\to 蠅畏^{\prime}$ cross sections at $\sqrt{s}=$ 2.000 to 3.080 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (599 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.07436v1-abstract-short" style="display: inline;"> The Born cross sections for the process $e^{+}e^{-}\to 蠅畏^{\prime}$ are measured at 22 center-of-mass energies from 2.000 to 3.080 GeV using data collected with the BESIII detector at the BEPCII collider. A resonant structure is observed with a statistical significance of 9.6$蟽$. A Breit-Wigner fit determines its mass to be $M_R=(2153\pm30\pm31)~{\rm{MeV}}/c^{2}$ and its width to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.07436v1-abstract-full').style.display = 'inline'; document.getElementById('2404.07436v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.07436v1-abstract-full" style="display: none;"> The Born cross sections for the process $e^{+}e^{-}\to 蠅畏^{\prime}$ are measured at 22 center-of-mass energies from 2.000 to 3.080 GeV using data collected with the BESIII detector at the BEPCII collider. A resonant structure is observed with a statistical significance of 9.6$蟽$. A Breit-Wigner fit determines its mass to be $M_R=(2153\pm30\pm31)~{\rm{MeV}}/c^{2}$ and its width to be $螕_{R}=(167\pm77\pm7)~\rm{MeV}$, where the first uncertainties are statistical and the second are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.07436v1-abstract-full').style.display = 'none'; document.getElementById('2404.07436v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.04640">arXiv:2404.04640</a> <span> [<a href="https://arxiv.org/pdf/2404.04640">pdf</a>, <a href="https://arxiv.org/format/2404.04640">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.110.L031101">10.1103/PhysRevD.110.L031101 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for di-photon decays of an axion-like particle in radiative $J/蠄$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.04640v3-abstract-short" style="display: inline;"> We search for the di-photon decay of a light pseudoscalar axion-like particle, $a$, in radiative $J/蠄$ decays, using 10 billion $J/蠄$ events collected with the BESIII detector. We find no evidence of a signal and set upper limits at the $95\%$ confidence level on the product branching fraction $\mathcal{B}(J/蠄\to 纬a) \times \mathcal{B}(a \to 纬纬)$ and the axion-like particle photon coupling constan… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.04640v3-abstract-full').style.display = 'inline'; document.getElementById('2404.04640v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.04640v3-abstract-full" style="display: none;"> We search for the di-photon decay of a light pseudoscalar axion-like particle, $a$, in radiative $J/蠄$ decays, using 10 billion $J/蠄$ events collected with the BESIII detector. We find no evidence of a signal and set upper limits at the $95\%$ confidence level on the product branching fraction $\mathcal{B}(J/蠄\to 纬a) \times \mathcal{B}(a \to 纬纬)$ and the axion-like particle photon coupling constant $g_{a 纬纬}$ in the ranges of $(3.7-48.5) \times 10^{-8}$ and $(2.2 -101.8)\times 10^{-4}$ GeV$^{-1}$, respectively, for $0.18 \le m_a \le 2.85$ GeV/$c^2$. These are the most stringent limits to date in this mass region. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.04640v3-abstract-full').style.display = 'none'; document.getElementById('2404.04640v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 5 figures, Published in Phys. Rev. D 110, L031101 (2024)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BESIII Analysis Memo - 671 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.19091">arXiv:2403.19091</a> <span> [<a href="https://arxiv.org/pdf/2403.19091">pdf</a>, <a href="https://arxiv.org/format/2403.19091">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Observation of the semileptonic decays $D^0\rightarrow K_S^0蟺^-蟺^0 e^+ 谓_e$ and $D^+\rightarrow K_S^0蟺^+蟺^- e^+ 谓_e$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (600 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2403.19091v1-abstract-short" style="display: inline;"> By analyzing $e^+e^-$ annihilation data corresponding to an integrated luminosity of 2.93 $\rm fb^{-1}$ collected at a center-of-mass energy of 3.773 GeV with the \text{BESIII} detector, the first observation of the semileptonic decays $D^0\rightarrow K_S^0蟺^-蟺^0 e^+ 谓_e$ and $D^+\rightarrow K_S^0蟺^+蟺^- e^+ 谓_e$ is reported. With a dominant hadronic contribution from $K_1(1270)$, the branching fra… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.19091v1-abstract-full').style.display = 'inline'; document.getElementById('2403.19091v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.19091v1-abstract-full" style="display: none;"> By analyzing $e^+e^-$ annihilation data corresponding to an integrated luminosity of 2.93 $\rm fb^{-1}$ collected at a center-of-mass energy of 3.773 GeV with the \text{BESIII} detector, the first observation of the semileptonic decays $D^0\rightarrow K_S^0蟺^-蟺^0 e^+ 谓_e$ and $D^+\rightarrow K_S^0蟺^+蟺^- e^+ 谓_e$ is reported. With a dominant hadronic contribution from $K_1(1270)$, the branching fractions are measured to be $\mathcal{B}(D^0\rightarrow {K}_1(1270)^-(\to K^0_S蟺^-蟺^0)e^+谓_e)=(1.69^{+0.53}_{-0.46}\pm0.15)\times10^{-4}$ and $\mathcal{B}(D^+\to \bar{K}_1(1270)^0(\to K^0_S蟺^+蟺^-)e^+谓_e)=(1.47^{+0.45}_{-0.40}\pm0.20)\times10^{-4}$ with statistical significance of 5.4$蟽$ and 5.6$蟽$, respectively. When combined with measurements of the $K_1(1270)\to K^+蟺^-蟺$ decays, the absolute branching fractions are determined to be $\mathcal{B}(D^0\to K_1(1270)^-e^+谓_e)=(1.05^{+0.33}_{-0.28}\pm0.12\pm0.12)\times10^{-3}$ and $\mathcal{B}(D^+\to \bar{K}_1(1270)^0e^+谓_e)=(1.29^{+0.40}_{-0.35}\pm0.18\pm0.15)\times10^{-3}$. The first and second uncertainties are statistical and systematic, respectively, and the third uncertainties originate from the assumed branching fractions of the $K_1(1270)\to K蟺蟺$ decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.19091v1-abstract-full').style.display = 'none'; document.getElementById('2403.19091v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">19pages</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.11207">arXiv:2402.11207</a> <span> [<a href="https://arxiv.org/pdf/2402.11207">pdf</a>, <a href="https://arxiv.org/ps/2402.11207">ps</a>, <a href="https://arxiv.org/format/2402.11207">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for the production of deuterons and antideuterons in e^+e^- annihilation at center-of-mass energies between 4.13 and 4.70 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (593 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2402.11207v1-abstract-short" style="display: inline;"> Using a data sample of $e^+e^-$ collision data corresponding to an integrated luminosity of 19 fb$^{-1}$ collected with the BESIII detector at the BEPCII collider, we search for the production of deuterons and antideuterons via $e^+e^-\to pp蟺^-\bar{d}+c.c.$ for the first time at center-of-mass energies between 4.13 and 4.70 GeV. No significant signal is observed and the upper limit of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.11207v1-abstract-full').style.display = 'inline'; document.getElementById('2402.11207v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.11207v1-abstract-full" style="display: none;"> Using a data sample of $e^+e^-$ collision data corresponding to an integrated luminosity of 19 fb$^{-1}$ collected with the BESIII detector at the BEPCII collider, we search for the production of deuterons and antideuterons via $e^+e^-\to pp蟺^-\bar{d}+c.c.$ for the first time at center-of-mass energies between 4.13 and 4.70 GeV. No significant signal is observed and the upper limit of the $e^+e^-\to pp蟺^-\bar{d}+c.c.$ cross section is determined to be from 9.0 to 145 fb depending on the center-of-mass energy at the $90\%$ confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.11207v1-abstract-full').style.display = 'none'; document.getElementById('2402.11207v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.03829">arXiv:2402.03829</a> <span> [<a href="https://arxiv.org/pdf/2402.03829">pdf</a>, <a href="https://arxiv.org/ps/2402.03829">ps</a>, <a href="https://arxiv.org/format/2402.03829">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.133.081901">10.1103/PhysRevLett.133.081901 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Precise Measurement of Born Cross Sections for $e^+e^-\to D\bar{D}$ at $\sqrt{s} = 3.80-4.95$ GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2402.03829v3-abstract-short" style="display: inline;"> Using data samples collected with the BESIII detector at the BEPCII collider at center-of-mass energies ranging from 3.80 to 4.95 GeV, corresponding to an integrated luminosity of 20 fb$^{-1}$, a measurement of Born cross sections for the $e^+e^-\to D^{0}\bar{D}^{0}$ and $D^{+}D^{-}$ processes is presented with unprecedented precision. Many clear peaks in the line shape of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.03829v3-abstract-full').style.display = 'inline'; document.getElementById('2402.03829v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.03829v3-abstract-full" style="display: none;"> Using data samples collected with the BESIII detector at the BEPCII collider at center-of-mass energies ranging from 3.80 to 4.95 GeV, corresponding to an integrated luminosity of 20 fb$^{-1}$, a measurement of Born cross sections for the $e^+e^-\to D^{0}\bar{D}^{0}$ and $D^{+}D^{-}$ processes is presented with unprecedented precision. Many clear peaks in the line shape of $e^+e^-\to D^{0}\bar{D}^{0}$ and $D^{+}D^{-}$ around the mass range of $G(3900)$, $蠄(4040)$, $蠄(4160)$, $Y(4260)$, and $蠄(4415)$, etc., are foreseen. These results offer crucial experimental insights into the nature of hadron production in the open-charm region. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.03829v3-abstract-full').style.display = 'none'; document.getElementById('2402.03829v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 3 figures, 1 Supplemental Material, consistent with the publication in Phys. Rev. Lett. 133 (2024) 081901</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 133 (2024) 081901 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.14720">arXiv:2401.14720</a> <span> [<a href="https://arxiv.org/pdf/2401.14720">pdf</a>, <a href="https://arxiv.org/ps/2401.14720">ps</a>, <a href="https://arxiv.org/format/2401.14720">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Observation of structures in the processes $e^+e^-\rightarrow蠅蠂_{c1}$ and $蠅蠂_{c2}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (608 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2401.14720v2-abstract-short" style="display: inline;"> We present measurements of the Born cross sections for the processes $e^+e^-\rightarrow蠅蠂_{c1}$ and $蠅蠂_{c2}$ at center-of-mass energies $\sqrt{s}$ from 4.308 to 4.951 GeV. The measurements are performed with data samples corresponding to an integrated luminosity of 11.0 $\rm{fb}^{-1}$ collected with the BESIII detector operating at the BEPCII storage ring. Assuming the $e^+e^-\rightarrow蠅蠂_{c2}$… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.14720v2-abstract-full').style.display = 'inline'; document.getElementById('2401.14720v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.14720v2-abstract-full" style="display: none;"> We present measurements of the Born cross sections for the processes $e^+e^-\rightarrow蠅蠂_{c1}$ and $蠅蠂_{c2}$ at center-of-mass energies $\sqrt{s}$ from 4.308 to 4.951 GeV. The measurements are performed with data samples corresponding to an integrated luminosity of 11.0 $\rm{fb}^{-1}$ collected with the BESIII detector operating at the BEPCII storage ring. Assuming the $e^+e^-\rightarrow蠅蠂_{c2}$ signals come from a single resonance, the mass and width are determined to be $M=(4413.6\pm9.0\pm0.8)$ MeV/$c^2$ and $螕=(110.5\pm15.0\pm2.9)$ MeV, respectively, which is consistent with the parameters of the well-established resonance $蠄(4415)$. In addition, we also use one single resonance to describe the $e^+e^-\rightarrow蠅蠂_{c1}$ lineshape, and determine the mass and width to be $M=(4544.2\pm18.7\pm1.7)$ MeV/$c^2$ and $螕=(116.1\pm33.5\pm1.7)$ MeV, respectively. The structure of this lineshape, observed for the first time, requires further understanding. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.14720v2-abstract-full').style.display = 'none'; document.getElementById('2401.14720v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 8 figures, with Supplemental Material</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.14711">arXiv:2401.14711</a> <span> [<a href="https://arxiv.org/pdf/2401.14711">pdf</a>, <a href="https://arxiv.org/format/2401.14711">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Study of $e^{+}e^{-}\rightarrow蟺^{+}蟺^{-}蟺^{0}$ at $\sqrt{s}$ from 2.00 to 3.08 GeV at BESIII </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (608 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2401.14711v1-abstract-short" style="display: inline;"> With the data samples taken at center-of-mass energies from 2.00 to 3.08 GeV with the BESIII detector at the BEPCII collider, a partial wave analysis on the $e^{+}e^{-}\rightarrow蟺^{+}蟺^{-}蟺^{0}$ process is performed. The Born cross sections for $e^{+}e^{-}\rightarrow蟺^{+}蟺^{-}蟺^{0}$ and its intermediate processes $e^{+}e^{-}\rightarrow蟻蟺$ and $蟻(1450)蟺$ are measured as functions of $\sqrt{s}$. Th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.14711v1-abstract-full').style.display = 'inline'; document.getElementById('2401.14711v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.14711v1-abstract-full" style="display: none;"> With the data samples taken at center-of-mass energies from 2.00 to 3.08 GeV with the BESIII detector at the BEPCII collider, a partial wave analysis on the $e^{+}e^{-}\rightarrow蟺^{+}蟺^{-}蟺^{0}$ process is performed. The Born cross sections for $e^{+}e^{-}\rightarrow蟺^{+}蟺^{-}蟺^{0}$ and its intermediate processes $e^{+}e^{-}\rightarrow蟻蟺$ and $蟻(1450)蟺$ are measured as functions of $\sqrt{s}$. The results for $e^{+}e^{-}\rightarrow蟺^{+}蟺^{-}蟺^{0}$ are consistent with previous results measured with the initial state radiation method within one standard deviation, and improve the uncertainty by a factor of ten. By fitting the line shapes of the Born cross sections for the $e^{+}e^{-}\rightarrow蟻蟺$ and $蟻(1450)蟺$, a structure with mass $M = 2119\pm11\pm15\ {\rm MeV}/c^2$ and width $螕=69\pm30\pm5 {\rm MeV}$ is observed with a significance of $5.9蟽$, where the first uncertainties are statistical and the second ones are systematic. This structure can be intepreteted as an excited $蠅$ state. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.14711v1-abstract-full').style.display = 'none'; document.getElementById('2401.14711v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.09225">arXiv:2401.09225</a> <span> [<a href="https://arxiv.org/pdf/2401.09225">pdf</a>, <a href="https://arxiv.org/format/2401.09225">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> First measurements of the absolute branching fraction of $螞_{c}(2625)^{+}\to 螞^{+}_{c}蟺^+蟺^-$ and upper limit on $螞_{c}(2595)^{+}\to 螞^{+}_{c}蟺^+蟺^-$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a> , et al. (603 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2401.09225v1-abstract-short" style="display: inline;"> The absolute branching fraction of the decay $螞_{c}(2625)^{+}\to 螞^{+}_{c}蟺^+蟺^-$ is measured for the first time to be $(50.7 \pm 5.0_{\rm{stat.}} \pm 4.9_{\rm{syst.}} )\%$ with 368.48 pb$^{-1}$ of $e^+e^-$ collision data collected by the BESIII detector at the center-of-mass energies of $\sqrt{s} = 4.918$ and $4.950$ GeV. This result is lower than the naive prediction of 67\%, obtained from isosp… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.09225v1-abstract-full').style.display = 'inline'; document.getElementById('2401.09225v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.09225v1-abstract-full" style="display: none;"> The absolute branching fraction of the decay $螞_{c}(2625)^{+}\to 螞^{+}_{c}蟺^+蟺^-$ is measured for the first time to be $(50.7 \pm 5.0_{\rm{stat.}} \pm 4.9_{\rm{syst.}} )\%$ with 368.48 pb$^{-1}$ of $e^+e^-$ collision data collected by the BESIII detector at the center-of-mass energies of $\sqrt{s} = 4.918$ and $4.950$ GeV. This result is lower than the naive prediction of 67\%, obtained from isospin symmetry, by more than $2蟽$, thereby indicating that the novel mechanism referred to as the \textit{threshold effect}, proposed for the strong decays of $螞_{c}(2595)^{+}$, also applies to $螞_{c}(2625)^{+}$. This measurement is necessary to obtain the coupling constants for the transitions between $s$-wave and $p$-wave charmed baryons in heavy hadron chiral perturbation theory. In addition, we search for the decay $螞_{c}(2595)^{+}\to 螞^{+}_{c}蟺^+蟺^-$. No significant signal is observed, and the upper limit on its branching fraction is determined to be 80.8\% at the 90\% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.09225v1-abstract-full').style.display = 'none'; document.getElementById('2401.09225v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 6 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.00918">arXiv:2401.00918</a> <span> [<a href="https://arxiv.org/pdf/2401.00918">pdf</a>, <a href="https://arxiv.org/ps/2401.00918">ps</a>, <a href="https://arxiv.org/format/2401.00918">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Partial Wave Analysis of $J/蠄\rightarrow 纬纬蠁$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (603 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2401.00918v1-abstract-short" style="display: inline;"> Using a sample of $(10087\pm44)\times10^{6}$ $J/蠄$ events collected with the BESIII detector at the BEPCII collider, a partial wave analysis on the decay $纬纬蠁$ is performed to investigate the intermediate resonances in $J/蠄\rightarrow纬X, X\rightarrow纬蠁$. The resonances $f_{1}(1285)$, $畏(1405)$, $f_{1}(1420)$, $f_{1}(1510)$, $f_{2}(1525)$, $X(1835)$, $f_{2}(1950)$, $f_{2}(2010)$, $f_{0}(2200)$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.00918v1-abstract-full').style.display = 'inline'; document.getElementById('2401.00918v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.00918v1-abstract-full" style="display: none;"> Using a sample of $(10087\pm44)\times10^{6}$ $J/蠄$ events collected with the BESIII detector at the BEPCII collider, a partial wave analysis on the decay $纬纬蠁$ is performed to investigate the intermediate resonances in $J/蠄\rightarrow纬X, X\rightarrow纬蠁$. The resonances $f_{1}(1285)$, $畏(1405)$, $f_{1}(1420)$, $f_{1}(1510)$, $f_{2}(1525)$, $X(1835)$, $f_{2}(1950)$, $f_{2}(2010)$, $f_{0}(2200)$ and $畏_{c}$ are observed with statistical significance greater than 5$蟽$. The product branching fractions $\mathcal{B}(J/蠄\rightarrow纬X, X\rightarrow 纬蠁)$ are reported. The resonance parameters of $畏(1405)$ and $X(1835)$ are also measured. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.00918v1-abstract-full').style.display = 'none'; document.getElementById('2401.00918v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.00878">arXiv:2401.00878</a> <span> [<a href="https://arxiv.org/pdf/2401.00878">pdf</a>, <a href="https://arxiv.org/ps/2401.00878">ps</a>, <a href="https://arxiv.org/format/2401.00878">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Observation of $\mathcal R(3810)$ in $e^+e^-\rightarrow {\rm hadrons}$ and Improved Measurements of the Resonance Parameters of $\mathcal R(3760)$ and $\mathcal R(3780)$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (596 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2401.00878v1-abstract-short" style="display: inline;"> We report the measurement of the cross sections for $e^+e^-\rightarrow {\rm hadrons}$ at center-of-mass (c.m.) energies from 3.645 to 3.871 GeV. We observe a new resonance $\mathcal R(3810)$ in the cross sections for the first time, and observe the $\mathcal R(3760)$ resonance with high significance in the cross sections. The $\mathcal R(3810)$ has a mass of $(3804.5 \pm 0.9 \pm 0.9)$ ~MeV/$c^2$,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.00878v1-abstract-full').style.display = 'inline'; document.getElementById('2401.00878v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.00878v1-abstract-full" style="display: none;"> We report the measurement of the cross sections for $e^+e^-\rightarrow {\rm hadrons}$ at center-of-mass (c.m.) energies from 3.645 to 3.871 GeV. We observe a new resonance $\mathcal R(3810)$ in the cross sections for the first time, and observe the $\mathcal R(3760)$ resonance with high significance in the cross sections. The $\mathcal R(3810)$ has a mass of $(3804.5 \pm 0.9 \pm 0.9)$ ~MeV/$c^2$, a total width of $(5.4 \pm 3.5 \pm 3.2)$~MeV, and an electronic partial width of $(19.4 \pm 7.4 \pm 12.1)$~eV. Its significance is $7.7蟽$. The $\mathcal R(3810)$ could be interpreted as a hadro-charmonium resonance predicted by Quantum Chromodynamics (QCD). In addition, we measure the mass $(3751.9\pm 3.8\pm 2.8)$ ~MeV/$c^2$, the total width $(32.8 \pm 5.8 \pm 8.7)$~MeV, and the electronic partial width $(184\pm 75\pm 86)$~eV with improved precision for the $\mathcal R(3760)$. Furthermore, for the $\mathcal R(3780)$ we measure the mass $(3778.7\pm 0.5\pm 0.3)$ ~MeV/$c^2$ and total width $(20.3 \pm 0.8 \pm 1.7)$~MeV with improved precision, and the electronic partial width $(265\pm 69\pm 83)$~eV. The $\mathcal R(3780)$ can be interpreted as the $1^3D_1$ state of charmonium. Its mass and total width differ significantly from the corresponding fitted values given by the Particle Data Group in 2022 by 7.1 and 3.2 times the uncertainties for $蠄(3770)$, respectively. $蠄(3770)$ has been interpreted as the $1^3D_1$ state for 45 years. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.00878v1-abstract-full').style.display = 'none'; document.getElementById('2401.00878v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.13593">arXiv:2312.13593</a> <span> [<a href="https://arxiv.org/pdf/2312.13593">pdf</a>, <a href="https://arxiv.org/ps/2312.13593">ps</a>, <a href="https://arxiv.org/format/2312.13593">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for the decay $蠂_{c1}(3872)\to蟺^{+}蟺^{-}蠂_{c1}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (608 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.13593v1-abstract-short" style="display: inline;"> Using a data sample corresponding to an integrated luminosity of 10.9 fb$^{-1}$ collected at center-of-mass energies from 4.16 to 4.34 GeV with the BESIII detector, we search for the decay $蠂_{c1}(3872) \to 蟺^{+}蟺^{-}蠂_{c1}$ in the radiative production $e^{+}e^{-} \to 纬蠂_{c1}(3872)$. No significant signal is observed, and the ratio for the branching fraction of $蠂_{c1}(3872) \to 蟺^{+}蟺^{-}蠂_{c1}$… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.13593v1-abstract-full').style.display = 'inline'; document.getElementById('2312.13593v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.13593v1-abstract-full" style="display: none;"> Using a data sample corresponding to an integrated luminosity of 10.9 fb$^{-1}$ collected at center-of-mass energies from 4.16 to 4.34 GeV with the BESIII detector, we search for the decay $蠂_{c1}(3872) \to 蟺^{+}蟺^{-}蠂_{c1}$ in the radiative production $e^{+}e^{-} \to 纬蠂_{c1}(3872)$. No significant signal is observed, and the ratio for the branching fraction of $蠂_{c1}(3872) \to 蟺^{+}蟺^{-}蠂_{c1}$ to $蠂_{c1}(3872) \to 蟺^{+}蟺^{-}J/蠄$ is measured as $\mathcal{R}\equiv\frac{\mathcal{B}[蠂_{c1}(3872) \to 蟺^{+}蟺^{-}蠂_{c1}]}{\mathcal{B}[蠂_{c1}(3872) \to 蟺^{+}蟺^{-} J/蠄]}<0.18$ at 90$\%$ confidence level. The upper limit on the product of the cross section $蟽[e^{+}e^{-}\to纬蠂_{c1}(3872)]$ and the branching fraction $\mathcal{B}[蠂_{c1}(3872)\to蟺^{+}蟺^{-}蠂_{c1}]$ at each center-of-mass energy is also given. These measurements favor the non-conventional charmonium nature of the $蠂_{c1}(3872)$ state. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.13593v1-abstract-full').style.display = 'none'; document.getElementById('2312.13593v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 1 figure</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.10962">arXiv:2312.10962</a> <span> [<a href="https://arxiv.org/pdf/2312.10962">pdf</a>, <a href="https://arxiv.org/format/2312.10962">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Observation of significant flavor-SU(3) breaking in the kaon wave function at $12~{\rm GeV}^2<Q^2<25~{\rm GeV}^2$ and discovery of the charmless decay $蠄(3770)\to K_S^0K_L^0$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (607 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.10962v1-abstract-short" style="display: inline;"> We present cross sections for the reaction $e^+e^-\to K_S^0K_L^0$ at center-of-mass energies ranging from 3.51 GeV to 4.95 GeV using data samples collected in the BESIII experiment, corresponding to a total integrated luminosity of 26.5 fb$^{-1}$. The ratio of neutral-to-charged kaon form factors at large momentum transfers ($12~{\rm GeV}^2<Q^2<25~{\rm GeV}^2$) is determined to be $0.21\pm 0.01$,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.10962v1-abstract-full').style.display = 'inline'; document.getElementById('2312.10962v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.10962v1-abstract-full" style="display: none;"> We present cross sections for the reaction $e^+e^-\to K_S^0K_L^0$ at center-of-mass energies ranging from 3.51 GeV to 4.95 GeV using data samples collected in the BESIII experiment, corresponding to a total integrated luminosity of 26.5 fb$^{-1}$. The ratio of neutral-to-charged kaon form factors at large momentum transfers ($12~{\rm GeV}^2<Q^2<25~{\rm GeV}^2$) is determined to be $0.21\pm 0.01$, which indicates a small but significant effect of flavor-SU(3) breaking in the kaon wave function, and consequently excludes the possibility that flavor-SU(3) breaking is the primary reason for the strong experimental violation of the pQCD prediction $|F(蟺^{\pm})|/|F(K^{\pm})|=f^2_蟺/f^2_{K}$, where $F(蟺^{\pm})$ and $F(K^{\pm})$ are the form factors, and $f_蟺$ and $f_{K}$ are the decay constants of charged pions and kaons, respectively. We also observe a significant signal for the charmless decay $蠄(3770)\to K_S^0K_L^0$ for the first time. Within a $1蟽$ contour of the likelihood value, the the branching fraction for $蠄(3770)\to K_S^0K_L^0$ is determined to be ${\cal B}=(2.63_{-1.59}^{+1.40})\times 10^{-5}$, and the relative phase between the continuum and $蠄(3770)$ amplitudes is $蠁=(-0.39_{-0.10}^{+0.05})蟺$. The branching fraction is in good agreement with the $\mathcal{S}$- and $\mathcal{D}$-wave charmonia mixing scheme proposed in the interpretation of the "$蟻蟺$ puzzle" between $J/蠄$ and $蠄(3686)$ decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.10962v1-abstract-full').style.display = 'none'; document.getElementById('2312.10962v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 56 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.07572">arXiv:2312.07572</a> <span> [<a href="https://arxiv.org/pdf/2312.07572">pdf</a>, <a href="https://arxiv.org/ps/2312.07572">ps</a>, <a href="https://arxiv.org/format/2312.07572">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for $D^{0}\to K_{S}^{0} K^{-} e^{+}谓_{e}$, $D^{+}\to K_{S}^{0} K_{S}^{0} e^{+}谓_{e}$, and $D^{+}\to K^{+}K^{-} e^{+}谓_{e}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.07572v1-abstract-short" style="display: inline;"> A search has been performed for the semileptonic decays $D^{0}\to K_{S}^{0} K^{-} e^{+}谓_{e}$, $D^{+}\to K_{S}^{0} K_{S}^{0} e^{+}谓_{e}$ and $D^{+}\to K^{+}K^{-} e^{+}谓_{e}$, using $7.9~\mathrm{fb}^{-1}$ of $e^+e^-$ annihilation data collected at the center-of-mass energy $\sqrt{s}=3.773$ GeV by the BESIII detector operating at the BEPCII collider. No significant signals are observed, and upper li… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.07572v1-abstract-full').style.display = 'inline'; document.getElementById('2312.07572v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.07572v1-abstract-full" style="display: none;"> A search has been performed for the semileptonic decays $D^{0}\to K_{S}^{0} K^{-} e^{+}谓_{e}$, $D^{+}\to K_{S}^{0} K_{S}^{0} e^{+}谓_{e}$ and $D^{+}\to K^{+}K^{-} e^{+}谓_{e}$, using $7.9~\mathrm{fb}^{-1}$ of $e^+e^-$ annihilation data collected at the center-of-mass energy $\sqrt{s}=3.773$ GeV by the BESIII detector operating at the BEPCII collider. No significant signals are observed, and upper limits are set at the 90\% confidence level of $2.13\times10^{-5}$, $1.54\times10^{-5}$ and $2.10\times10^{-5}$ for the branching fractions of $D^{0}\to K_{S}^{0} K^{-} e^{+}谓_{e}$, $D^{+}\to K_{S}^{0} K_{S}^{0} e^{+}谓_{e}$ and $D^{+}\to K^{+}K^{-} e^{+}谓_{e}$, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.07572v1-abstract-full').style.display = 'none'; document.getElementById('2312.07572v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.05324">arXiv:2312.05324</a> <span> [<a href="https://arxiv.org/pdf/2312.05324">pdf</a>, <a href="https://arxiv.org/format/2312.05324">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.132.181901">10.1103/PhysRevLett.132.181901 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Determination of spin-parity quantum numbers of X(2370) as $0^{-+}$ from $J/蠄\rightarrow纬K^{0}_{S}K^{0}_{S}畏^{\prime}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (605 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.05324v2-abstract-short" style="display: inline;"> Based on $(10087\pm44)\times10^{6}$ $J/蠄$ events collected with the BESIII detector, a partial wave analysis of the decay $J/蠄\rightarrow纬K^{0}_{S}K^{0}_{S}畏^{\prime}$ is performed. The mass and width of the $X(2370)$ are measured to be $2395 \pm 11 ({\rm stat})^{+26}_{-94}({\rm syst})\ \mathrm{MeV}/c^{2}$ and $188^{+18}_{-17}({\rm stat})^{+124}_{-33}({\rm syst})~\mathrm{MeV}$, respectively. The c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.05324v2-abstract-full').style.display = 'inline'; document.getElementById('2312.05324v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.05324v2-abstract-full" style="display: none;"> Based on $(10087\pm44)\times10^{6}$ $J/蠄$ events collected with the BESIII detector, a partial wave analysis of the decay $J/蠄\rightarrow纬K^{0}_{S}K^{0}_{S}畏^{\prime}$ is performed. The mass and width of the $X(2370)$ are measured to be $2395 \pm 11 ({\rm stat})^{+26}_{-94}({\rm syst})\ \mathrm{MeV}/c^{2}$ and $188^{+18}_{-17}({\rm stat})^{+124}_{-33}({\rm syst})~\mathrm{MeV}$, respectively. The corresponding product branching fraction is $\mathcal{B}[J/蠄\rightarrow纬X(2370)] \times \mathcal{B}[X(2370) \rightarrow f_{0}(980)畏^{\prime}] \times \mathcal{B}[f_{0}(980) \rightarrow K^{0}_{S}K^{0}_{S}] = \left( 1.31 \pm 0.22 ({\rm stat})^{+2.85}_{-0.84}({\rm syst}) \right) \times 10^{-5}$. The statistical significance of the $X(2370)$ is greater than $11.7蟽$ and the spin-parity is determined to be $0^{-+}$ for the first time. The measured mass and spin-parity of the $X(2370)$ are consistent with the predictions of the lightest pseudoscalar glueball. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.05324v2-abstract-full').style.display = 'none'; document.getElementById('2312.05324v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 132 (2024) 181901 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.17131">arXiv:2311.17131</a> <span> [<a href="https://arxiv.org/pdf/2311.17131">pdf</a>, <a href="https://arxiv.org/format/2311.17131">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.072010">10.1103/PhysRevD.109.072010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of Branching Fractions for $螞_{c}^{+} \rightarrow n K_{S}^{0} 蟺^{+}$ and $螞_{c}^{+} \rightarrow n K_{S}^{0} K^{+}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (603 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.17131v1-abstract-short" style="display: inline;"> Based on 4.5 fb$^{-1}$ of $e^{+}e^{-}$ collision data accumulated at center-of-mass energies between $4.600\,\mathrm{GeV}$ and $4.699\,\mathrm{GeV}$ with the BESIII detector, we measure the absolute branching fraction of the Cabibbo-favored decay $螞_{c}^{+} \rightarrow n K_{S}^{0} 蟺^{+}$ with the precision improved by a factor of 2.8 and report the first evidence for the singly-Cabibbo-suppressed… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.17131v1-abstract-full').style.display = 'inline'; document.getElementById('2311.17131v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.17131v1-abstract-full" style="display: none;"> Based on 4.5 fb$^{-1}$ of $e^{+}e^{-}$ collision data accumulated at center-of-mass energies between $4.600\,\mathrm{GeV}$ and $4.699\,\mathrm{GeV}$ with the BESIII detector, we measure the absolute branching fraction of the Cabibbo-favored decay $螞_{c}^{+} \rightarrow n K_{S}^{0} 蟺^{+}$ with the precision improved by a factor of 2.8 and report the first evidence for the singly-Cabibbo-suppressed decay $螞_{c}^{+} \rightarrow n K_{S}^{0} K^{+}$. The branching fractions for $螞_{c}^{+} \rightarrow n K_{S}^{0} 蟺^{+}$ and $螞_{c}^{+} \rightarrow n K_{S}^{0} K^{+}$ are determined to be $(1.86\pm0.08\pm0.04)\times10^{-2}$ and $\left(4.3^{+1.9}_{-1.5}\pm0.3\right)\times10^{-4}$, respectively, where the first uncertainties are statistical and the second ones are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.17131v1-abstract-full').style.display = 'none'; document.getElementById('2311.17131v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, 072010 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.12903">arXiv:2311.12903</a> <span> [<a href="https://arxiv.org/pdf/2311.12903">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.032003">10.1103/PhysRevD.109.032003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First observation of $螞_c^+\rightarrow螞K^+蟺^0$ and evidence of $螞_c^+\rightarrow螞K^+蟺^+蟺^-$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (608 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.12903v2-abstract-short" style="display: inline;"> We present the first observation of the singly Cabibbo-suppressed decay $螞_c^+ \rightarrow 螞K^+蟺^0$ with a significance of $5.7蟽$ and the first evidence of $螞_c^+ \rightarrow 螞K^+蟺^+蟺^-$ decay with a significance of $3.1蟽$, based on $e^+e^-$ annihilation data recorded by the BESIII detector at the BEPCII collider. The data correspond to an integrated luminosity of $6.4~{\rm fb^{-1}}$, in the cente… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.12903v2-abstract-full').style.display = 'inline'; document.getElementById('2311.12903v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.12903v2-abstract-full" style="display: none;"> We present the first observation of the singly Cabibbo-suppressed decay $螞_c^+ \rightarrow 螞K^+蟺^0$ with a significance of $5.7蟽$ and the first evidence of $螞_c^+ \rightarrow 螞K^+蟺^+蟺^-$ decay with a significance of $3.1蟽$, based on $e^+e^-$ annihilation data recorded by the BESIII detector at the BEPCII collider. The data correspond to an integrated luminosity of $6.4~{\rm fb^{-1}}$, in the center-of-mass energy range from $4.600~{\rm GeV}$ to $4.950~{\rm GeV}$. We determine the branching fractions of $螞_c^+ \rightarrow 螞K^+蟺^0$ and $螞_c^+ \rightarrow 螞K^+蟺^+蟺^-$ relative to their Cabibbo-favored counterparts to be $\frac{\mathcal{B}(螞_c^+ \rightarrow 螞K^+蟺^0)}{\mathcal{B}(螞_c^+ \rightarrow 螞蟺^+蟺^0)} = (2.09\pm0.39_{\mathrm{stat.}}\pm0.07_{\mathrm{syst.}}) \times 10^{-2}$ and $\frac{\mathcal{B}(螞_c^+ \rightarrow 螞K^+蟺^+蟺^-)}{\mathcal{B}(螞_c^+ \rightarrow 螞蟺^+蟺^+蟺^-)} = (1.13\pm0.41_{\mathrm{stat.}}\pm0.06_{\mathrm{syst.}}) \times 10^{-2}$, respectively. Moreover, by combining our measured result with the world average of $\mathcal{B}(螞^+_c\to 螞蟺^+蟺^0)$, we obtain the branching fraction $\mathcal{B}(螞_c^+ \to 螞K^+蟺^0) = (1.49\pm0.27_{\mathrm{stat.}}\pm0.05_{\mathrm{syst.}}\pm0.08_{\mathrm{ref.}}) \times 10^{-3}$. This result significantly departs from theoretical predictions based on quark $SU(3)$ flavor symmetry, which is underpinned by the presumption of meson pair $S$-wave amplitude dominance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.12903v2-abstract-full').style.display = 'none'; document.getElementById('2311.12903v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, 032003 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.12895">arXiv:2311.12895</a> <span> [<a href="https://arxiv.org/pdf/2311.12895">pdf</a>, <a href="https://arxiv.org/format/2311.12895">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Improved measurement of the decays $畏' \to 蟺^{+}蟺^{-}蟺^{+(0)}蟺^{-(0)}$ and search for the rare decay $畏' \to 4蟺^{0}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (606 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.12895v1-abstract-short" style="display: inline;"> Using a sample of 10 billion $J/蠄$ events collected with the BESIII detector, the decays $畏' \to 蟺^{+}蟺^{-}蟺^{+}蟺^{-}$, $畏' \to 蟺^{+}蟺^{-}蟺^{0}蟺^{0}$ and $畏' \to 4 蟺^{0}$ are studied via the process $J/蠄\to纬畏'$. The branching fractions of $畏' \to 蟺^{+}蟺^{-}蟺^{+}蟺^{-}$ and $畏' \to 蟺^{+}蟺^{-}蟺^{0}$ $蟺^{0}$ are measured to be $( 8.56 \pm 0.25({\rm stat.}) \pm 0.23({\rm syst.}) ) \times {10^{ - 5}}$ a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.12895v1-abstract-full').style.display = 'inline'; document.getElementById('2311.12895v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.12895v1-abstract-full" style="display: none;"> Using a sample of 10 billion $J/蠄$ events collected with the BESIII detector, the decays $畏' \to 蟺^{+}蟺^{-}蟺^{+}蟺^{-}$, $畏' \to 蟺^{+}蟺^{-}蟺^{0}蟺^{0}$ and $畏' \to 4 蟺^{0}$ are studied via the process $J/蠄\to纬畏'$. The branching fractions of $畏' \to 蟺^{+}蟺^{-}蟺^{+}蟺^{-}$ and $畏' \to 蟺^{+}蟺^{-}蟺^{0}$ $蟺^{0}$ are measured to be $( 8.56 \pm 0.25({\rm stat.}) \pm 0.23({\rm syst.}) ) \times {10^{ - 5}}$ and $(2.12 \pm 0.12({\rm stat.}) \pm 0.10({\rm syst.})) \times {10^{ - 4}}$, respectively, which are consistent with previous measurements but with improved precision. No significant $畏' \to 4 蟺^{0}$ signal is observed, and the upper limit on the branching fraction of this decay is determined to be less than $1.24 \times {10^{-5}}$ at the $90\%$ confidence level. In addition, an amplitude analysis of $畏' \to 蟺^{+}蟺^{-}蟺^{+}蟺^{-}$ is performed to extract the doubly virtual isovector form factor $伪$ for the first time. The measured value of $伪=1.22 \pm 0.33({\rm stat.}) \pm 0.04({\rm syst.})$, is in agreement with the prediction of the VMD model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.12895v1-abstract-full').style.display = 'none'; document.getElementById('2311.12895v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.07043">arXiv:2311.07043</a> <span> [<a href="https://arxiv.org/pdf/2311.07043">pdf</a>, <a href="https://arxiv.org/ps/2311.07043">ps</a>, <a href="https://arxiv.org/format/2311.07043">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Study of the decay $J/蠄\to 蠁蟺^{0}畏$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.07043v2-abstract-short" style="display: inline;"> Based on $(10.09 \pm 0.04) \times 10^9$ $J/蠄$ events collected with the BESIII detector operating at the BEPCII collider, a partial wave analysis of the decay $J/蠄\to 蠁蟺^{0}畏$ is performed. We observe for the first time two new structures on the $蠁畏$ invariant mass distribution, with statistical significances of $24.0蟽$ and $16.9蟽$; the first with $J^{\rm PC}$ = $1^{+-}$, mass M = (1911 $\pm$ 6 (s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.07043v2-abstract-full').style.display = 'inline'; document.getElementById('2311.07043v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.07043v2-abstract-full" style="display: none;"> Based on $(10.09 \pm 0.04) \times 10^9$ $J/蠄$ events collected with the BESIII detector operating at the BEPCII collider, a partial wave analysis of the decay $J/蠄\to 蠁蟺^{0}畏$ is performed. We observe for the first time two new structures on the $蠁畏$ invariant mass distribution, with statistical significances of $24.0蟽$ and $16.9蟽$; the first with $J^{\rm PC}$ = $1^{+-}$, mass M = (1911 $\pm$ 6 (stat.) $\pm$ 14 (sys.))~MeV/$c^{2}$, and width $螕= $ (149 $\pm$ 12 (stat.) $\pm$ 23 (sys.))~MeV, the second with $J^{\rm PC}$ = $1^{--}$, mass M = (1996 $\pm$ 11 (stat.) $\pm$ 30 (sys.))~MeV/$c^{2}$, and width $螕$ = (148 $\pm$ 16 (stat.) $\pm$ 66 (sys.))~MeV. These measurements provide important input for the strangeonium spectrum. In addition, the $f_0(980)-a_0(980)^0$ mixing signal in $J/蠄\to 蠁f_0(980) \to 蠁a_0(980)^0$ and the corresponding electromagnetic decay $J/蠄\to 蠁a_0(980)^0$ are measured with improved precision, providing crucial information to understand the nature of $a_0(980)^0$ and $f_0(980)$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.07043v2-abstract-full').style.display = 'none'; document.getElementById('2311.07043v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.06883">arXiv:2311.06883</a> <span> [<a href="https://arxiv.org/pdf/2311.06883">pdf</a>, <a href="https://arxiv.org/format/2311.06883">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.L091101">10.1103/PhysRevD.109.L091101 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Evidence of the Singly Cabibbo Suppressed decay $螞_c^+\to p蟺^0$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (600 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.06883v6-abstract-short" style="display: inline;"> Evidence for the singly Cabibbo suppressed decay $螞_c^+\to p蟺^0$ is reported for the first time with a statistical significance of $3.7蟽$ based on 6.0 $\mathrm{fb}^{-1}$ of $e^+e^-$ collision data collected at center-of-mass energies between 4.600 and 4.843 GeV with the BESIII detector at the BEPCII collider. The absolute branching fraction of $螞_c^+\to p蟺^0$ is measured to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.06883v6-abstract-full').style.display = 'inline'; document.getElementById('2311.06883v6-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.06883v6-abstract-full" style="display: none;"> Evidence for the singly Cabibbo suppressed decay $螞_c^+\to p蟺^0$ is reported for the first time with a statistical significance of $3.7蟽$ based on 6.0 $\mathrm{fb}^{-1}$ of $e^+e^-$ collision data collected at center-of-mass energies between 4.600 and 4.843 GeV with the BESIII detector at the BEPCII collider. The absolute branching fraction of $螞_c^+\to p蟺^0$ is measured to be $(1.56^{+0.72}_{-0.58}\pm0.20)\times 10^{-4}$. Combining with the branching fraction of $螞_c^+\to n蟺^+$, $(6.6\pm1.3)\times10^{-4}$, the ratio of the branching fractions of $螞_c^+\to n蟺^+$ and $螞_c^+\to p蟺^0$ is calculated to be $3.2^{+2.2}_{-1.2}$. As an important input for the theoretical models describing the decay mechanisms of charmed baryons, our result indicates that the non-factorizable contributions play an essential role and their interference with the factorizable contributions should not be significant. In addition, the absolute branching fraction of $螞_c^+\to p畏$ is measured to be $(1.63\pm0.31_{\rm stat}\pm0.11_{\rm syst}) \times10^{-3}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.06883v6-abstract-full').style.display = 'none'; document.getElementById('2311.06883v6-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, L091101 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.05955">arXiv:2311.05955</a> <span> [<a href="https://arxiv.org/pdf/2311.05955">pdf</a>, <a href="https://arxiv.org/format/2311.05955">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Observation and branching fraction measurement of the decay $J\!/\!蠄\rightarrow \bar{p} 危^{+} K_{S}^{0} + c.c.$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (602 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.05955v2-abstract-short" style="display: inline;"> The first observation of the decays $J\!/\!蠄\rightarrow \bar{p} 危^{+} K_{S}^{0}$ and $J\!/\!蠄\rightarrow p \bar危^{-} K_{S}^{0}$ is reported using $(10087\pm44)\times10^{6}$ $J\!/\!蠄$ events recorded by the BESIII detector at the BEPCII storage ring. The branching fractions of each channel are determined to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.05955v2-abstract-full').style.display = 'inline'; document.getElementById('2311.05955v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.05955v2-abstract-full" style="display: none;"> The first observation of the decays $J\!/\!蠄\rightarrow \bar{p} 危^{+} K_{S}^{0}$ and $J\!/\!蠄\rightarrow p \bar危^{-} K_{S}^{0}$ is reported using $(10087\pm44)\times10^{6}$ $J\!/\!蠄$ events recorded by the BESIII detector at the BEPCII storage ring. The branching fractions of each channel are determined to be $\mathcal{B}(J\!/\!蠄\rightarrow \bar{p} 危^{+} K_{S}^{0})=(1.361 \pm 0.006 \pm 0.025) \times 10^{-4}$ and $\mathcal{B}(J\!/\!蠄\rightarrow p \bar危^{-} K_{S}^{0})=(1.352 \pm 0.006 \pm 0.025) \times 10^{-4}$. The combined result is $\mathcal{B}(J\!/\!蠄\rightarrow \bar{p} 危^{+} K_{S}^{0} +c.c.)=(2.725 \pm 0.009 \pm 0.050) \times 10^{-4}$, where the first uncertainty is statistical and the second systematic. The results presented are in good agreement with the branching fractions of the isospin partner decay $J\!/\!蠄\rightarrow p K^- \bar危^0 + c.c.$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.05955v2-abstract-full').style.display = 'none'; document.getElementById('2311.05955v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.02347">arXiv:2311.02347</a> <span> [<a href="https://arxiv.org/pdf/2311.02347">pdf</a>, <a href="https://arxiv.org/format/2311.02347">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.052001">10.1103/PhysRevD.109.052001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the absolute branching fraction of the three-body decay $螞_{c}^+ \to 螢^{0}K^{+}蟺^{0}$ and search for $螞_{c}^+ \to nK^+蟺^0$, $危^{0}K^{+}蟺^{0}$ and $螞K^{+}蟺^{0}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (600 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.02347v3-abstract-short" style="display: inline;"> The Cabbibo-favored decay $螞_{c}^+ \to 螢^{0}K^{+}蟺^{0}$ is studied for the first time using 6.1 fb$^{-1}$ of $e^+e^-$ collision data at center-of-mass energies between 4.600 and 4.840 GeV, collected with the BESIII detector at the BEPCII collider. With a double-tag method, the branching fraction of the three-body decay $螞_{c}^+ \to 螢^{0}K^{+}蟺^{0}$ is measured to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.02347v3-abstract-full').style.display = 'inline'; document.getElementById('2311.02347v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.02347v3-abstract-full" style="display: none;"> The Cabbibo-favored decay $螞_{c}^+ \to 螢^{0}K^{+}蟺^{0}$ is studied for the first time using 6.1 fb$^{-1}$ of $e^+e^-$ collision data at center-of-mass energies between 4.600 and 4.840 GeV, collected with the BESIII detector at the BEPCII collider. With a double-tag method, the branching fraction of the three-body decay $螞_{c}^+ \to 螢^{0}K^{+}蟺^{0}$ is measured to be $(7.79 \pm 1.46 _{\rm} \pm0.71 _{\rm}) \times 10^{ - 3}$, where the first and second uncertainties are statistical and systematic, respectively. The branching fraction of the two-body decay $螞_{c}^+ \to 螢(1530)^{0}K^+$ is $(5.99\pm1.04\pm0.29)\times10^{-3}$, which is consistent with the previous result of $(5.02\pm0.99\pm0.31)\times 10^{-3}$. In addition, the upper limit on the branching fraction of the doubly Cabbibo-suppressed decay $螞_{c}^+ \to nK^+蟺^0$ is $7.1 \times 10^{-4}$ at the 90$\%$ confidence level. The upper limits on the branching fractions of $螞_{c}^+ \to 危^{0}K^{+}蟺^{0}$ and $螞K^{+}蟺^{0}$ are also determined to be $1.8\times 10^{-3}$ and $ 2.0 \times 10^{-3}$, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.02347v3-abstract-full').style.display = 'none'; document.getElementById('2311.02347v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 20 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, 052001 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.01076">arXiv:2311.01076</a> <span> [<a href="https://arxiv.org/pdf/2311.01076">pdf</a>, <a href="https://arxiv.org/format/2311.01076">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for a muonphilic scalar $X_{0}$ or vector $X_{1}$ via $J/蠄\to渭^+渭^-+\rm{invisible}$ decays at BESII </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (608 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.01076v2-abstract-short" style="display: inline;"> A light scalar $X_{0}$ or vector $X_{1}$ particles have been introduced as a possible explanation for the $(g-2)_渭$ anomaly and dark matter phenomena. Using $(8.998\pm 0.039)\times10^9$ $\jpsi $ events collected by the BESIII detector, we search for a light muon philic scalar $X_{0}$ or vector $X_{1}$ in the processes $J/蠄\to渭^+渭^- X_{0,1}$ with $X_{0,1}$ invisible decays. No obvious signal is f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.01076v2-abstract-full').style.display = 'inline'; document.getElementById('2311.01076v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.01076v2-abstract-full" style="display: none;"> A light scalar $X_{0}$ or vector $X_{1}$ particles have been introduced as a possible explanation for the $(g-2)_渭$ anomaly and dark matter phenomena. Using $(8.998\pm 0.039)\times10^9$ $\jpsi $ events collected by the BESIII detector, we search for a light muon philic scalar $X_{0}$ or vector $X_{1}$ in the processes $J/蠄\to渭^+渭^- X_{0,1}$ with $X_{0,1}$ invisible decays. No obvious signal is found, and the upper limits on the coupling $g_{0,1}'$ between the muon and the $X_{0,1}$ particles are set to be between $1.1\times10^{-3}$ and $1.0\times10^{-2}$ for the $X_{0,1}$ mass in the range of $1<M(X_{0,1})<1000$ MeV$/c^2$ at 90$\%$ confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.01076v2-abstract-full').style.display = 'none'; document.getElementById('2311.01076v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages 7 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.17937">arXiv:2310.17937</a> <span> [<a href="https://arxiv.org/pdf/2310.17937">pdf</a>, <a href="https://arxiv.org/ps/2310.17937">ps</a>, <a href="https://arxiv.org/format/2310.17937">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.132.151901">10.1103/PhysRevLett.132.151901 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of the Anomalous Shape of $X(1840)$ in $J/蠄\rightarrow 纬3(蟺^+ 蟺^-)$ Indicating a Second Resonance Near $p\bar{p}$ Threshold </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.17937v3-abstract-short" style="display: inline;"> Using a sample of $(10087\pm44)\times 10^6$ $J/蠄$ events, which is about 45 times larger than that was previously analyzed, a further investigation on the $J/蠄\rightarrow 纬3(蟺^+蟺^-)$ decay is performed. A significant distortion at 1.84 GeV/$c^2$ in the line-shape of the $3(蟺^+蟺^-)$ invariant mass spectrum is observed for the first time, which could be resolved by two overlapping resonant structure… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.17937v3-abstract-full').style.display = 'inline'; document.getElementById('2310.17937v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.17937v3-abstract-full" style="display: none;"> Using a sample of $(10087\pm44)\times 10^6$ $J/蠄$ events, which is about 45 times larger than that was previously analyzed, a further investigation on the $J/蠄\rightarrow 纬3(蟺^+蟺^-)$ decay is performed. A significant distortion at 1.84 GeV/$c^2$ in the line-shape of the $3(蟺^+蟺^-)$ invariant mass spectrum is observed for the first time, which could be resolved by two overlapping resonant structures, $X(1840)$ and $X(1880)$. The new state $X(1880)$ is observed with a statistical significance larger than $10蟽$. The mass and width of $X(1880)$ are determined to be $1882.1\pm1.7\pm0.7$ MeV/$c^2$ and $30.7\pm5.5 \pm2.4$ MeV, respectively, which indicates the existence of a $p\bar{p}$ bound state. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.17937v3-abstract-full').style.display = 'none'; document.getElementById('2310.17937v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 132, 151901 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.15601">arXiv:2310.15601</a> <span> [<a href="https://arxiv.org/pdf/2310.15601">pdf</a>, <a href="https://arxiv.org/ps/2310.15601">ps</a>, <a href="https://arxiv.org/format/2310.15601">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.032011">10.1103/PhysRevD.109.032011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of the doubly Cabibbo-suppressed decays $D^+_s\to K^+K^+蟺^-$ and $D^+_s\to K^+K^+蟺^-蟺^0$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.15601v1-abstract-short" style="display: inline;"> Based on 7.33 fb$^{-1}$ of $e^+e^-$ collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, the experimental studies of the doubly Cabibbo-suppressed decays $D^+_s\to K^+K^+蟺^-$ and $D^+_s\to K^+K^+蟺^-蟺^0$ are reported. We determine the absolute branching fraction of $D^+_s\to K^+K^+蟺^-$ to be (… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.15601v1-abstract-full').style.display = 'inline'; document.getElementById('2310.15601v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.15601v1-abstract-full" style="display: none;"> Based on 7.33 fb$^{-1}$ of $e^+e^-$ collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, the experimental studies of the doubly Cabibbo-suppressed decays $D^+_s\to K^+K^+蟺^-$ and $D^+_s\to K^+K^+蟺^-蟺^0$ are reported. We determine the absolute branching fraction of $D^+_s\to K^+K^+蟺^-$ to be (${1.23^{+0.28}_{-0.25}}({\rm stat})\pm0.06({\rm syst})$) $\times 10^{-4}$. No significant signal of $D^+_s\to K^+K^+蟺^-蟺^0$ is observed and the upper limit on its decay branching fraction at 90\% confidence level is set to be $1.7\times10^{-4}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.15601v1-abstract-full').style.display = 'none'; document.getElementById('2310.15601v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 4 figures, 4 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BAM-00695 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, 032011 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.14585">arXiv:2310.14585</a> <span> [<a href="https://arxiv.org/pdf/2310.14585">pdf</a>, <a href="https://arxiv.org/format/2310.14585">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.108.092011">10.1103/PhysRevD.108.092011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of the $蠄(3686)$ decays into $危^{+}\bar危^{-}蠅$ and $危^{+}\bar危^{-}{\mathcal蠁}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.14585v1-abstract-short" style="display: inline;"> Based on $(27.08\pm 0.14)\times10^{8}$ $蠄(3686)$ events collected with the BESIII detector operating at the BEPCII collider, the $蠄(3686)\to危^{+}\bar危^{-}蠅$ and $危^{+}\bar危^{-}蠁$ decays are observed for the first time with statistical significances of 13.8$蟽$ and 7.6$蟽$, respectively. The corresponding branching fractions are measured to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.14585v1-abstract-full').style.display = 'inline'; document.getElementById('2310.14585v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.14585v1-abstract-full" style="display: none;"> Based on $(27.08\pm 0.14)\times10^{8}$ $蠄(3686)$ events collected with the BESIII detector operating at the BEPCII collider, the $蠄(3686)\to危^{+}\bar危^{-}蠅$ and $危^{+}\bar危^{-}蠁$ decays are observed for the first time with statistical significances of 13.8$蟽$ and 7.6$蟽$, respectively. The corresponding branching fractions are measured to be $\mathcal{B}(蠄(3686)\to危^{+}\bar危^{-}蠅)=(1.90 \pm 0.18 \pm 0.21) \times 10^{-5}$ and $\mathcal{B}(蠄(3686)\to危^{+}\bar危^{-}蠁)=(2.96 \pm 0.54 \pm 0.41) \times 10^{-6}$, where the first uncertainties are statistical and the second systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.14585v1-abstract-full').style.display = 'none'; document.getElementById('2310.14585v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 108, 092011 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.10452">arXiv:2310.10452</a> <span> [<a href="https://arxiv.org/pdf/2310.10452">pdf</a>, <a href="https://arxiv.org/format/2310.10452">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.108.L111101">10.1103/PhysRevD.108.L111101 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the cross sections for $e^+e^-\to畏蟺^+蟺^-$ at center-of-mass energies between 2.00 and 3.08 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (605 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.10452v2-abstract-short" style="display: inline;"> Using data samples collected at center-of-mass energies between 2.000 and 3.080 GeV with the BESIII detector operating at the BEPCII collider, a partial-wave analysis is performed on the process $e^+e^-\to畏蟺^+蟺^-$. In addition to the dominant $e^+e^-\to蟻畏$ component, the $e^+e^-\to a_2(1320)蟺$ process is also sizeable, contributing up to 24% of the total reaction. The measured cross sections of th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.10452v2-abstract-full').style.display = 'inline'; document.getElementById('2310.10452v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.10452v2-abstract-full" style="display: none;"> Using data samples collected at center-of-mass energies between 2.000 and 3.080 GeV with the BESIII detector operating at the BEPCII collider, a partial-wave analysis is performed on the process $e^+e^-\to畏蟺^+蟺^-$. In addition to the dominant $e^+e^-\to蟻畏$ component, the $e^+e^-\to a_2(1320)蟺$ process is also sizeable, contributing up to 24% of the total reaction. The measured cross sections of the process $e^+e^-\to畏蟺^+蟺^-$ are systematically higher than those of BaBar by more than $3蟽$ at center-of-mass energies between 2.000 and 2.300 GeV. In the cross section lineshape for $e^+e^-\to a_2(1320)蟺$, a resonant structure is observed with a significance of $5.5蟽$, with $M=(2044\pm31\pm4)$ MeV/$c^2$, $螕=(163\pm69\pm24)$ MeV and $\mathcal{B_{R}}\cdot螕_{e^+e^-}^{R}=(34.6\pm17.1\pm6.0)$ eV or $(137.1\pm73.3\pm2.1)$ eV. In the cross section lineshape for $e^+e^-\to蟻畏$, an evidence of a dip structure around 2180 MeV/$c^2$ is observed with statistical significance of $3.0蟽$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.10452v2-abstract-full').style.display = 'none'; document.getElementById('2310.10452v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> PHYS. REV. D 108, L111101 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.07277">arXiv:2310.07277</a> <span> [<a href="https://arxiv.org/pdf/2310.07277">pdf</a>, <a href="https://arxiv.org/format/2310.07277">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for $J/蠄$ weak decays containing $D$ meson </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (600 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.07277v1-abstract-short" style="display: inline;"> Using a sample of about 10 billion $J/蠄$ events with the BESIII detector, we search for the weak decays of $J/蠄\to \bar{D}^0蟺^0 + c.c.$, $J/蠄\to \bar{D}^0畏+ c.c.$, $J/蠄\to \bar{D}^0蟻^0 + c.c.$, $J/蠄\to D^-蟺^+ + c.c.$, and $J/蠄\to D^-蟻^+ + c.c.$. Since no significant signal is observed, we set the upper limits of the branching fractions of these decays to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.07277v1-abstract-full').style.display = 'inline'; document.getElementById('2310.07277v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.07277v1-abstract-full" style="display: none;"> Using a sample of about 10 billion $J/蠄$ events with the BESIII detector, we search for the weak decays of $J/蠄\to \bar{D}^0蟺^0 + c.c.$, $J/蠄\to \bar{D}^0畏+ c.c.$, $J/蠄\to \bar{D}^0蟻^0 + c.c.$, $J/蠄\to D^-蟺^+ + c.c.$, and $J/蠄\to D^-蟻^+ + c.c.$. Since no significant signal is observed, we set the upper limits of the branching fractions of these decays to be $\mathcal{B}(J/蠄\to \bar{D}^0蟺^0 + c.c.) < 4.7 \times 10^{-7}$, $\mathcal{B}(J/蠄\to \bar{D}^0畏+ c.c.) < 6.8 \times 10^{-7}$, $\mathcal{B}(J/蠄\to \bar{D}^0蟻^0 + c.c.) < 5.2 \times 10^{-7}$, $\mathcal{B}(J/蠄\to D^-蟺^+ + c.c.) < 7.0 \times 10^{-8}$, and $\mathcal{B}(J/蠄\to D^-蟻^+ + c.c.) < 6.0 \times 10^{-7}$ at the 90\% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.07277v1-abstract-full').style.display = 'none'; document.getElementById('2310.07277v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 17 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.03361">arXiv:2310.03361</a> <span> [<a href="https://arxiv.org/pdf/2310.03361">pdf</a>, <a href="https://arxiv.org/format/2310.03361">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.092012">10.1103/PhysRevD.109.092012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $e^{+}e^{-}\rightarrow畏J/蠄$ Cross Section from $\sqrt{s}=$ 3.808 GeV to 4.951 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (608 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.03361v1-abstract-short" style="display: inline;"> Using data samples with an integrated luminosity of 22.42 fb$^{-1}$ collected by the BESIII detector operating at the BEPCII storage ring, we measure the cross sections of the $e^{+}e^{-}\rightarrow\etaJ/蠄$ process at center-of-mass energies from 3.808 to 4.951 GeV. Three structures are observed in the line shape of the measured cross sections. A maximum-likelihood fit with $蠄(4040)$, two addition… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.03361v1-abstract-full').style.display = 'inline'; document.getElementById('2310.03361v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.03361v1-abstract-full" style="display: none;"> Using data samples with an integrated luminosity of 22.42 fb$^{-1}$ collected by the BESIII detector operating at the BEPCII storage ring, we measure the cross sections of the $e^{+}e^{-}\rightarrow\etaJ/蠄$ process at center-of-mass energies from 3.808 to 4.951 GeV. Three structures are observed in the line shape of the measured cross sections. A maximum-likelihood fit with $蠄(4040)$, two additional resonances, and a non-resonant component is performed. The mass and width of the first additional state are $(4219.7\pm2.5\pm4.5) \rm{MeV}/\rm{c}^2$ and $(80.7\pm4.4\pm1.4) \rm{MeV}$, respectively, consistent with the $蠄(4230)$. For the second state, the mass and width are $(4386\pm13\pm17) \rm{MeV}/\rm{c}^2$ and $(177\pm32\pm13) \rm{MeV}$, respectively, consistent with the $蠄(4360)$. The first uncertainties are statistical and the second ones are systematic. The statistical significance of $蠄(4040)$ is $8.0蟽$ and those for $蠄(4230)$ and $蠄(4360)$ are more than $10.0蟽$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.03361v1-abstract-full').style.display = 'none'; document.getElementById('2310.03361v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.14689">arXiv:2309.14689</a> <span> [<a href="https://arxiv.org/pdf/2309.14689">pdf</a>, <a href="https://arxiv.org/ps/2309.14689">ps</a>, <a href="https://arxiv.org/format/2309.14689">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Updated measurements of the M1 transition $蠄(3686) \to 纬畏_{c}(2S)$ with $畏_{c}(2S) \to K \bar{K} 蟺$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (609 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.14689v1-abstract-short" style="display: inline;"> Based on a data sample of $(27.08 \pm 0.14 ) \times 10^8~蠄(3686)$ events collected with the BESIII detector at the BEPCII collider, the M1 transition $蠄(3686) \to 纬畏_{c}(2S)$ with $畏_{c}(2S) \to K\bar{K}蟺$ is studied, where $K\bar{K}蟺$ is $K^{+} K^{-} 蟺^{0}$ or $K_{S}^{0}K^{\pm}蟺^{\mp}$. The mass and width of the $畏_{c}(2S)$ are measured to be $(3637.8 \pm 0.8 (\rm {stat}) \pm 0.2 (\rm {syst}))$ M… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.14689v1-abstract-full').style.display = 'inline'; document.getElementById('2309.14689v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.14689v1-abstract-full" style="display: none;"> Based on a data sample of $(27.08 \pm 0.14 ) \times 10^8~蠄(3686)$ events collected with the BESIII detector at the BEPCII collider, the M1 transition $蠄(3686) \to 纬畏_{c}(2S)$ with $畏_{c}(2S) \to K\bar{K}蟺$ is studied, where $K\bar{K}蟺$ is $K^{+} K^{-} 蟺^{0}$ or $K_{S}^{0}K^{\pm}蟺^{\mp}$. The mass and width of the $畏_{c}(2S)$ are measured to be $(3637.8 \pm 0.8 (\rm {stat}) \pm 0.2 (\rm {syst}))$ MeV/$c^{2}$ and $(10.5 \pm 1.7 (\rm {stat}) \pm 3.5 (\rm {syst}))$ MeV, respectively. The product branching fraction $\mathcal{B}\left(蠄(3686) \rightarrow 纬畏_{c}(2 S)\right) \times \mathcal{B}(畏_{c}(2 S) \rightarrow K \bar{K} 蟺)$ is determined to be $(0.97 \pm 0.06 (\rm {stat}) \pm 0.09 (\rm {syst})) \times 10^{-5}$. Using $\mathcal{BR}(畏_{c}(2S)\to K\bar{K}蟺)=(1.86^{+0.68}_{-0.49})\%$, we obtain the branching fraction of the radiative transition to be $\mathcal{BR}(蠄(3686) \to 纬畏_{c}(2S)) = (5.2 \pm 0.3 (\rm {stat}) \pm 0.5 (\rm {syst}) ^{+1.9}_{-1.4} (extr)) \times 10^{-4}$, where the third uncertainty is due to the quoted $\mathcal{BR}(畏_{c}(2S) \to K\bar{K}蟺)$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.14689v1-abstract-full').style.display = 'none'; document.getElementById('2309.14689v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.14667">arXiv:2309.14667</a> <span> [<a href="https://arxiv.org/pdf/2309.14667">pdf</a>, <a href="https://arxiv.org/ps/2309.14667">ps</a>, <a href="https://arxiv.org/format/2309.14667">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Investigation of the $螖I = 1/2$ rule and test of CP violation through the measurement of decay asymmetry parameters in $螢^-$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.14667v2-abstract-short" style="display: inline;"> Using $(10087\pm44)\times 10^{6}$ $J/蠄$ events collected with the BESIII detector, numerous $螢^-$ and $螞$ decay asymmetry parameters are simultaneously determined from the process $J/蠄\to 螢^- \bar螢^+ \to 螞(p蟺^-) 蟺^- \bar螞(\bar{n} 蟺^0) 蟺^+$ and its charge-conjugate channel. The precisions of $伪_0$ for $螞\to n蟺^0$ and $\bar伪_0$ for $\bar螞 \to \bar{n}蟺^0$ compared to world averages are improved by fa… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.14667v2-abstract-full').style.display = 'inline'; document.getElementById('2309.14667v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.14667v2-abstract-full" style="display: none;"> Using $(10087\pm44)\times 10^{6}$ $J/蠄$ events collected with the BESIII detector, numerous $螢^-$ and $螞$ decay asymmetry parameters are simultaneously determined from the process $J/蠄\to 螢^- \bar螢^+ \to 螞(p蟺^-) 蟺^- \bar螞(\bar{n} 蟺^0) 蟺^+$ and its charge-conjugate channel. The precisions of $伪_0$ for $螞\to n蟺^0$ and $\bar伪_0$ for $\bar螞 \to \bar{n}蟺^0$ compared to world averages are improved by factors of 4 and 1.7, respectively. The ratio of decay asymmetry parameters of $螞\to n蟺^0$ to that of $螞\to p蟺^-$, $\langle 伪_0 \rangle/ \langle 伪_{螞-} \rangle $, is determined to be $ 0.873 \pm 0.012^{+0.011}_{-0.010}$, where the first and the second uncertainties are statistical and systematic, respectively. The ratio is smaller than unity more than $5蟽$, which signifies the existence of the $螖I = 3/2$ transition in $螞$ for the first time. Beside, we test for CP violation in $螢^- \to 螞蟺^-$ and in $螞\to n 蟺^{0}$ with the best precision to date. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.14667v2-abstract-full').style.display = 'none'; document.getElementById('2309.14667v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 2 figures, 1 table</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.13883">arXiv:2309.13883</a> <span> [<a href="https://arxiv.org/pdf/2309.13883">pdf</a>, <a href="https://arxiv.org/format/2309.13883">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP01(2024)180">10.1007/JHEP01(2024)180 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the $e^{+}e^{-} \to K_{S}^{0} K_{L}^{0} 蟺^{0}$ cross sections from $\sqrt{s}=$ 2.000 to 3.080 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.13883v2-abstract-short" style="display: inline;"> Based on $e^{+}e^{-}$ collision data collected at center-of-mass energies from 2.000 to 3.080 GeV by the BESIII detector at the BEPCII collider, a partial wave analysis is performed for the process $e^{+}e^{-}\to K_{S}^{0} K_{L}^{0} 蟺^{0}$. The results allow the Born cross sections of the process $e^{+}e^{-}\to K_{S}^{0} K_{L}^{0} 蟺^{0}$, as well as its subprocesses… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.13883v2-abstract-full').style.display = 'inline'; document.getElementById('2309.13883v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.13883v2-abstract-full" style="display: none;"> Based on $e^{+}e^{-}$ collision data collected at center-of-mass energies from 2.000 to 3.080 GeV by the BESIII detector at the BEPCII collider, a partial wave analysis is performed for the process $e^{+}e^{-}\to K_{S}^{0} K_{L}^{0} 蟺^{0}$. The results allow the Born cross sections of the process $e^{+}e^{-}\to K_{S}^{0} K_{L}^{0} 蟺^{0}$, as well as its subprocesses $e^{+}e^{-}\to K^{*}(892)^{0}\bar{K}^{0}$ and $K^{*}_{2}(1430)^{0}\bar{K}^{0}$ to be measured. The Born cross sections for $e^{+}e^{-}\to K_{S}^{0}K_{L}^{0}蟺^{0}$ are consistent with previous measurements by BaBar, but with substantially improved precision. The Born cross section lineshape of the process $e^{+}e^{-}\to K^{*}(892)^{0}\bar{K}^{0}$ is consistent with a vector meson state around 2.2 GeV with a significance of 3.2$蟽$. A Breit-Wigner fit determines its mass as $M_Y=(2164.7\pm9.1\pm3.1)~{\rm{MeV}}/c^{2}$ and its width as $螕_{Y}=(32.4\pm21.0\pm1.8)~\rm{MeV}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.13883v2-abstract-full').style.display = 'none'; document.getElementById('2309.13883v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP01(2024)180 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.06368">arXiv:2309.06368</a> <span> [<a href="https://arxiv.org/pdf/2309.06368">pdf</a>, <a href="https://arxiv.org/ps/2309.06368">ps</a>, <a href="https://arxiv.org/format/2309.06368">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.108.L091101">10.1103/PhysRevD.108.L091101 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of the absolute branching fractions of $惟^-$ decays and test of the $螖I = 1/2$ rule </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (599 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.06368v1-abstract-short" style="display: inline;"> Based on a data set of $(27.12\pm0.10)\times 10^8$ $蠄(3686)$ events collected at the BESIII experiment, the absolute branching fractions of the three dominant $惟^-$ decays are measured to be $\mathcal{B}_{惟^- \to 螢^0 蟺^-} = (25.03\pm0.44\pm0.53)\%$, $\mathcal{B}_{惟^- \to 螢^- 蟺^0} = (8.43\pm0.52\pm0.28)\%$, and $\mathcal{B}_{惟^- \to 螞K^-} = (66.3\pm0.8\pm2.0)\%$, where the first and second uncertai… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.06368v1-abstract-full').style.display = 'inline'; document.getElementById('2309.06368v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.06368v1-abstract-full" style="display: none;"> Based on a data set of $(27.12\pm0.10)\times 10^8$ $蠄(3686)$ events collected at the BESIII experiment, the absolute branching fractions of the three dominant $惟^-$ decays are measured to be $\mathcal{B}_{惟^- \to 螢^0 蟺^-} = (25.03\pm0.44\pm0.53)\%$, $\mathcal{B}_{惟^- \to 螢^- 蟺^0} = (8.43\pm0.52\pm0.28)\%$, and $\mathcal{B}_{惟^- \to 螞K^-} = (66.3\pm0.8\pm2.0)\%$, where the first and second uncertainties are statistical and systematic, respectively. The ratio between $\mathcal{B}_{惟^- \to 螢^0 蟺^-}$ and $\mathcal{B}_{惟^- \to 螢^- 蟺^0}$ is determined to be $2.97\pm0.19\pm0.11$, which is in good agreement with the PDG value of $2.74\pm0.15$, but greater by more than four standard deviations than the theoretical prediction of 2 obtained from the $螖I = 1/2$ rule. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.06368v1-abstract-full').style.display = 'none'; document.getElementById('2309.06368v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.05760">arXiv:2309.05760</a> <span> [<a href="https://arxiv.org/pdf/2309.05760">pdf</a>, <a href="https://arxiv.org/ps/2309.05760">ps</a>, <a href="https://arxiv.org/format/2309.05760">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.132.131903">10.1103/PhysRevLett.132.131903 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of $D^{+}\to K_{S}^{0}a_{0}(980)^{+}$ in the amplitude analysis of $D^{+} \to K_{S}^{0}蟺^+畏$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.05760v2-abstract-short" style="display: inline;"> We perform for the first time an amplitude analysis of the decay $D^{+}\to K_{S}^{0}蟺^+畏$ and report the observation of the decay $D^{+}\to K_{S}^{0}a_{0}(980)^{+}$ using 2.93 fb$^{-1}$ of $e^+e^-$ collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation free decay among $D$ to $a_{0}(980)$-pseudoscalar, $D^{+}\to K_{S}^{0}a_{0}(980)^{+}$ is… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.05760v2-abstract-full').style.display = 'inline'; document.getElementById('2309.05760v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.05760v2-abstract-full" style="display: none;"> We perform for the first time an amplitude analysis of the decay $D^{+}\to K_{S}^{0}蟺^+畏$ and report the observation of the decay $D^{+}\to K_{S}^{0}a_{0}(980)^{+}$ using 2.93 fb$^{-1}$ of $e^+e^-$ collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation free decay among $D$ to $a_{0}(980)$-pseudoscalar, $D^{+}\to K_{S}^{0}a_{0}(980)^{+}$ is the ideal decay to extract the contributions of the external and internal $W$-emission amplitudes involving $a_{0}(980)$ and study the final-state interactions. The absolute branching fraction of $D^{+}\to K_{S}^{0}蟺^+畏$ is measured to be $(1.27\pm0.04_{\rm stat.}\pm0.03_{\rm syst.})\%$. The product branching fractions of $D^{+}\to K_{S}^{0}a_{0}(980)^{+}$ with $a_{0}(980)^{+}\to 蟺^+畏$ and $D^{+}\to 蟺^+ K_0^*(1430)^0$ with $K_0^*(1430)^0\to K_{S}^{0}畏$ are measured to be $(1.33\pm0.05_{\rm stat.}\pm0.04_{\rm syst.})\%$ and $(0.14\pm0.03_{\rm stat.}\pm0.01_{\rm syst.})\%$, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.05760v2-abstract-full').style.display = 'none'; document.getElementById('2309.05760v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 132, 131903 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.05484">arXiv:2309.05484</a> <span> [<a href="https://arxiv.org/pdf/2309.05484">pdf</a>, <a href="https://arxiv.org/format/2309.05484">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.L071103">10.1103/PhysRevD.109.L071103 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of the Singly Cabibbo-Suppressed Decay $螞_{c}^{+}\to 危^{-}K^{+}蟺^{+}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (605 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.05484v2-abstract-short" style="display: inline;"> The singly Cabibbo-suppressed decay $螞_{c}^{+}\to 危^{-}K^{+}蟺^{+}$ is observed for the first time with a statistical significance of $6.4蟽$ by using 4.5 fb$^{-1}$ of $e^+e^-$ collision data collected at center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII. The absolute branching fraction of $螞_{c}^{+}\to 危^{-}K^{+}蟺^{+}$ is measured to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.05484v2-abstract-full').style.display = 'inline'; document.getElementById('2309.05484v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.05484v2-abstract-full" style="display: none;"> The singly Cabibbo-suppressed decay $螞_{c}^{+}\to 危^{-}K^{+}蟺^{+}$ is observed for the first time with a statistical significance of $6.4蟽$ by using 4.5 fb$^{-1}$ of $e^+e^-$ collision data collected at center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII. The absolute branching fraction of $螞_{c}^{+}\to 危^{-}K^{+}蟺^{+}$ is measured to be $(3.8\pm1.3_{\rm stat}\pm0.2_{\rm syst})\times 10^{-4}$ in a model-independent approach. This is the first observation of a Cabibbo-suppressed $螞_{c}^{+}$ decay involving $危^-$ in the final state. The ratio of branching fractions between $螞_{c}^{+}\to 危^{-}K^{+}蟺^{+}$ and the Cabibbo-favored decay $螞_{c}^{+}\to 危^- 蟺^+蟺^+$ is calculated to be $(0.4 \pm 0.1)s_{c}^{2}$, where $s_{c} \equiv \sin胃_c = 0.2248$ with $胃_c$ the Cabibbo mixing angle. This ratio significantly deviates from $1.0s_{c}^{2}$ and provides important information for the understanding of nonfactorization contributions in $螞_{c}^{+}$ decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.05484v2-abstract-full').style.display = 'none'; document.getElementById('2309.05484v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, L071103 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.04215">arXiv:2309.04215</a> <span> [<a href="https://arxiv.org/pdf/2309.04215">pdf</a>, <a href="https://arxiv.org/format/2309.04215">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP11(2023)228">10.1007/JHEP11(2023)228 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the cross section of $e^+e^-\rightarrow螢^{-}\bar螢^{+}$ at center-of-mass energies between 3.510 and 4.843 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (599 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.04215v3-abstract-short" style="display: inline;"> Using $e^+e^-$ collision data corresponding to a total integrated luminosity of 12.9 $fb^{-1}$ collected with the BESIII detector at the BEPCII collider, the exclusive Born cross sections and the effective form factors of the reaction $e^+e^-\rightarrow螢^{-}\bar螢^{+}$ are measured via the single baryon-tag method at 23 center-of-mass energies between 3.510 and 4.843 GeV. Evidence for the decay… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.04215v3-abstract-full').style.display = 'inline'; document.getElementById('2309.04215v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.04215v3-abstract-full" style="display: none;"> Using $e^+e^-$ collision data corresponding to a total integrated luminosity of 12.9 $fb^{-1}$ collected with the BESIII detector at the BEPCII collider, the exclusive Born cross sections and the effective form factors of the reaction $e^+e^-\rightarrow螢^{-}\bar螢^{+}$ are measured via the single baryon-tag method at 23 center-of-mass energies between 3.510 and 4.843 GeV. Evidence for the decay $蠄(3770)\rightarrow螢^{-}\bar螢^{+}$ is observed with a significance of 4.5$蟽$ by analyzing the measured cross sections together with earlier BESIII results. For the other charmonium(-like) states $蠄(4040)$, $蠄(4160)$, $Y(4230)$, $Y(4360)$, $蠄(4415)$, and $Y(4660)$, no significant signal of their decay to $螢^-\bar 螢^+$ is found. For these states, upper limits of the products of the branching fraction and the electronic partial width at the 90% confidence level are provided. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.04215v3-abstract-full').style.display = 'none'; document.getElementById('2309.04215v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pages, 4 tables, 3 figures, consistent with the publication in JHEP11(2023)228</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP11(2023)228 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.04139">arXiv:2309.04139</a> <span> [<a href="https://arxiv.org/pdf/2309.04139">pdf</a>, <a href="https://arxiv.org/format/2309.04139">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Novel method to extract the femtometer structure of strange baryons using the vacuum polarization effect </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Albrecht%2C+M">M. Albrecht</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Ferroli%2C+R+B">R. Baldini Ferroli</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Becker%2C+D">D. Becker</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a> , et al. (560 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.04139v1-abstract-short" style="display: inline;"> One of the fundamental goals of particle physics is to gain microscopic understanding of the strong interaction. Electromagnetic form factors quantify the structure of hadrons in terms of charge and magnetization distributions. While the nucleon structure has been investigated extensively, data on hyperons is still scarce. It has recently been demonstrated that electron-positron annihilations into… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.04139v1-abstract-full').style.display = 'inline'; document.getElementById('2309.04139v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.04139v1-abstract-full" style="display: none;"> One of the fundamental goals of particle physics is to gain microscopic understanding of the strong interaction. Electromagnetic form factors quantify the structure of hadrons in terms of charge and magnetization distributions. While the nucleon structure has been investigated extensively, data on hyperons is still scarce. It has recently been demonstrated that electron-positron annihilations into hyperon-antihyperon pairs provide a powerful tools to investigate their inner structure. We present a novel method useful for hyperon-antihyperon pairs of different types which exploits the cross section enhancement due to the vacuum polarization effect at the $J/蠄$ resonance. Using the 10 billion $J/蠄$ events collected with the BESIII detector, this allows a thorough determination of the hyperon structure . The result is essentially a precise snapshot of a $\bar螞危^0$~($螞\bar危^0$) pair in the making, encoded in the form factor ratio and the phase. Their values are measured to be $R = 0.860\pm0.029({\rm stat.})\pm0.010({\rm syst.})$, $螖桅_1=(1.011\pm0.094({\rm stat.})\pm0.010({\rm syst.}))~\rm rad$ for $\bar螞危^0$ and $螖桅_2=(2.128\pm0.094({\rm stat.})\pm0.010({\rm syst.}))~\rm rad$ for $螞\bar危^0$, respectively. Furthermore, charge-parity (CP) breaking is investigated for the first time in this reaction and found to be consistent with CP symmetry. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.04139v1-abstract-full').style.display = 'none'; document.getElementById('2309.04139v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.04090">arXiv:2309.04090</a> <span> [<a href="https://arxiv.org/pdf/2309.04090">pdf</a>, <a href="https://arxiv.org/ps/2309.04090">ps</a>, <a href="https://arxiv.org/format/2309.04090">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for the semileptonic decays $D^+_s \to K_1(1270)^0 e^+谓_e$ and $D^+_s \to b_1(1235)^0 e^+谓_e$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (601 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.04090v1-abstract-short" style="display: inline;"> By analyzing 7.33\,fb$^{-1}$ of $e^+e^-$ collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we search for the semileptonic decays $D^+_s \to K_1(1270)^0 e^+谓_e$ and $D^+_s \to b_1(1235)^0 e^+谓_e$ for the first time. No significant signals are observed for either decay mode. The upper limits on the (product) branching fractions are determined t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.04090v1-abstract-full').style.display = 'inline'; document.getElementById('2309.04090v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.04090v1-abstract-full" style="display: none;"> By analyzing 7.33\,fb$^{-1}$ of $e^+e^-$ collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we search for the semileptonic decays $D^+_s \to K_1(1270)^0 e^+谓_e$ and $D^+_s \to b_1(1235)^0 e^+谓_e$ for the first time. No significant signals are observed for either decay mode. The upper limits on the (product) branching fractions are determined to be ${\mathcal B}[D^+_s \to K_1(1270)^0 e^+谓_e] < 4.1\times 10^{-4}$ and ${\mathcal B}[D^+_s \to b_1(1235)^0 e^+谓_e]\cdot {\mathcal B}[b_1(1235)^0\to 蠅蟺^0] < 6.4\times 10^{-4}$ at 90\% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.04090v1-abstract-full').style.display = 'none'; document.getElementById('2309.04090v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages,4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.01502">arXiv:2309.01502</a> <span> [<a href="https://arxiv.org/pdf/2309.01502">pdf</a>, <a href="https://arxiv.org/format/2309.01502">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> A coupled-channel analysis of the $X(3872)$ lineshape with BESIII data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (600 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.01502v1-abstract-short" style="display: inline;"> We perform a study of the $X(3872)$ lineshape using the data samples of $e^+e^-\to纬X(3872)$, $X(3872)\to D^0\bar{D}^0 蟺^0$ and $蟺^+蟺^- J/蠄$ collected with the BESIII detector. The effects of the coupled-channels and the off-shell $D^{*0}$ are included in the parameterization of the lineshape. The lineshape mass parameter is obtained to be $M_{X}=(3871.63\pm 0.13^{+0.06}_{-0.05})$ MeV. Two poles ar… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.01502v1-abstract-full').style.display = 'inline'; document.getElementById('2309.01502v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.01502v1-abstract-full" style="display: none;"> We perform a study of the $X(3872)$ lineshape using the data samples of $e^+e^-\to纬X(3872)$, $X(3872)\to D^0\bar{D}^0 蟺^0$ and $蟺^+蟺^- J/蠄$ collected with the BESIII detector. The effects of the coupled-channels and the off-shell $D^{*0}$ are included in the parameterization of the lineshape. The lineshape mass parameter is obtained to be $M_{X}=(3871.63\pm 0.13^{+0.06}_{-0.05})$ MeV. Two poles are found on the first and second Riemann sheets corresponding to the $D^{*0}\bar{D}^0$ branch cut. The pole location on the first sheet is much closer to the $D^{*0}\bar{D}^0$ threshold than the other, and is determined to be $7.04\pm0.15^{+0.07}_{-0.08}$ MeV above the $D^0\bar{D}^0蟺^0$ threshold with an imaginary part $-0.19\pm0.08^{+0.14}_{-0.19}$ MeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.01502v1-abstract-full').style.display = 'none'; document.getElementById('2309.01502v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.15362">arXiv:2308.15362</a> <span> [<a href="https://arxiv.org/pdf/2308.15362">pdf</a>, <a href="https://arxiv.org/format/2308.15362">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.131.211902">10.1103/PhysRevLett.131.211902 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of a vector charmoniumlike state at 4.7 ${\rm GeV}/c^2$ and search for $Z_{cs}$ in $e^+e^-\to K^+K^-J/蠄$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (599 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2308.15362v2-abstract-short" style="display: inline;"> Using data samples with an integrated luminosity of 5.85~fb$^{-1}$ collected at center-of-mass energies from 4.61 to 4.95 GeV with the BESIII detector operating at the BEPCII storage ring, we measure the cross section for the process $e^+e^-\to K^+K^-J/蠄$. A new resonance with a mass of $M = 4708_{-15}^{+17}\pm21$ MeV/$c^{2}$ and a width of $螕= 126_{-23}^{+27}\pm30$ MeV is observed in the energy-d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.15362v2-abstract-full').style.display = 'inline'; document.getElementById('2308.15362v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.15362v2-abstract-full" style="display: none;"> Using data samples with an integrated luminosity of 5.85~fb$^{-1}$ collected at center-of-mass energies from 4.61 to 4.95 GeV with the BESIII detector operating at the BEPCII storage ring, we measure the cross section for the process $e^+e^-\to K^+K^-J/蠄$. A new resonance with a mass of $M = 4708_{-15}^{+17}\pm21$ MeV/$c^{2}$ and a width of $螕= 126_{-23}^{+27}\pm30$ MeV is observed in the energy-dependent line shape of the $e^+e^-\to K^+K^-J/蠄$ cross section with a significance over $5蟽$. The $K^{+}J/蠄$ system is also investigated to search for charged charmoniumlike states, but no significant $Z_{cs}^+$ states are observed. Upper limits on the Born cross sections for $e^+e^-\to K^{-} Z_{cs}(3985)^{+}/K^{-} Z_{cs}(4000)^{+} + c.c.$ with $Z_{cs}(3985)^{\pm}/Z_{cs}(4000)^{\pm}\to K^{\pm} J/蠄$ are reported at 90\% confidence levels. The ratio of branching fractions $\frac{\mathcal{B}(Z_{cs}(3985)^{+}\to K^+ J/蠄)}{\mathcal{B}(Z_{cs}(3985)^{+}\to (\bar{D}^{0}D_s^{*+} + \bar{D}^{*0}D_s^+))}$ is measured to be less than 0.03 at 90\% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.15362v2-abstract-full').style.display = 'none'; document.getElementById('2308.15362v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev. Lett. 131, 211902 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.15206">arXiv:2308.15206</a> <span> [<a href="https://arxiv.org/pdf/2308.15206">pdf</a>, <a href="https://arxiv.org/ps/2308.15206">ps</a>, <a href="https://arxiv.org/format/2308.15206">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.072008">10.1103/PhysRevD.109.072008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of excited $螢$ states in $蠄(3686)\rightarrow{}K^{-}螞\overline螢^{+}+c.c.$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (587 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2308.15206v3-abstract-short" style="display: inline;"> Based on a sample of $(448.1\pm2.9)\times10^{6}$ $蠄(3686)$ events collected with the BESIII detector at BEPCII, the decays of $蠄(3686)\to{}K^{-}螞\overline螢^{+} + c.c.$ with $\overline螢^+ \to \overline螞蟺^+$, $\overline螞\to \overline{p} 蟺^+$ are studied.Two excited hyperons, $螢(1690)^-$ and $螢(1820)^-$, are observed with large significance ($ \gg 10 蟽$) in the $K^{-}螞$ invariant mass distributions.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.15206v3-abstract-full').style.display = 'inline'; document.getElementById('2308.15206v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.15206v3-abstract-full" style="display: none;"> Based on a sample of $(448.1\pm2.9)\times10^{6}$ $蠄(3686)$ events collected with the BESIII detector at BEPCII, the decays of $蠄(3686)\to{}K^{-}螞\overline螢^{+} + c.c.$ with $\overline螢^+ \to \overline螞蟺^+$, $\overline螞\to \overline{p} 蟺^+$ are studied.Two excited hyperons, $螢(1690)^-$ and $螢(1820)^-$, are observed with large significance ($ \gg 10 蟽$) in the $K^{-}螞$ invariant mass distributions. A partial wave analysis is performed, and the spin-parities of $螢(1690)^-$ and $螢(1820)^-$ are determined to be $\frac{1}{2}^{-}$ and $\frac{3}{2}^{-}$, respectively. The masses, widths, and product branching fractions of $螢(1690)^-$ and $螢(1820)^-$ are also measured. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.15206v3-abstract-full').style.display = 'none'; document.getElementById('2308.15206v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 paes, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review D 109, 072008 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.13980">arXiv:2308.13980</a> <span> [<a href="https://arxiv.org/pdf/2308.13980">pdf</a>, <a href="https://arxiv.org/ps/2308.13980">ps</a>, <a href="https://arxiv.org/format/2308.13980">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.L011102">10.1103/PhysRevD.109.L011102 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for the light hadron decay $蠂_{c1}(3872) \to 蟺^{+}蟺^{-}畏$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (600 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2308.13980v2-abstract-short" style="display: inline;"> With a data sample corresponding to an integrated luminosity of 11.5~fb$^{-1}$ collected with the BESIII detector operating at the BEPCII storage ring, for the first time the light hadron decay $蠂_{c1}(3872) \rightarrow 蟺^{+}蟺^{-}畏$ is searched for. While no significant signal is observed, the upper limits at the 90\% confidence level for… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.13980v2-abstract-full').style.display = 'inline'; document.getElementById('2308.13980v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.13980v2-abstract-full" style="display: none;"> With a data sample corresponding to an integrated luminosity of 11.5~fb$^{-1}$ collected with the BESIII detector operating at the BEPCII storage ring, for the first time the light hadron decay $蠂_{c1}(3872) \rightarrow 蟺^{+}蟺^{-}畏$ is searched for. While no significant signal is observed, the upper limits at the 90\% confidence level for $蟽[e^{+}e^{-} \rightarrow 纬蠂_{c1}(3872)] \mathcal{B}[蠂_{c1}(3872) \rightarrow 蟺^{+}蟺^{-}畏]$ at center-of-mass energies from 4.13 to 4.34 GeV are determined. By normalizing to the $蠂_{c1}(3872)\to蟺^+蟺^- J/蠄$ decay channel, a 90\% confidence level upper limit for the branching fraction ratio $\mathcal{R}=\mathcal{B}[蠂_{c1}(3872) \rightarrow蟺^{+}蟺^{-}畏]/\mathcal{B}[蠂_{c1}(3872) \rightarrow 蟺^{+}蟺^{-} J/蠄] < 0.12$ is given. These measurements provide important inputs for understanding the internal structure of the $蠂_{c1}(3872)$ resonance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.13980v2-abstract-full').style.display = 'none'; document.getElementById('2308.13980v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 5 figures, version to appear in PRD(L)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, L011102 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.13725">arXiv:2308.13725</a> <span> [<a href="https://arxiv.org/pdf/2308.13725">pdf</a>, <a href="https://arxiv.org/ps/2308.13725">ps</a>, <a href="https://arxiv.org/format/2308.13725">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Improved measurement of the branching fractions for $J/蠄\to纬蟺^0$, $纬畏$ and $纬畏^\prime$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (598 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2308.13725v1-abstract-short" style="display: inline;"> Using a data sample of $(1.0087\pm 0.0044)\times 10^{10}$ $J/蠄$ events collected with the BESIII detector, the decays of $J/蠄\to纬蟺^{0} (畏, 畏^\prime)\to纬纬纬$ are studied. Newly measured branching fractions are $\mathcal{B}$$(J/蠄\to纬蟺^{0})$=$(3.34\pm 0.02\pm 0.09)\times 10^{-5}$, $\mathcal{B}$$(J/蠄\to纬畏)$=$(1.096\pm 0.001\pm0.019)\times 10^{-3}$ and $\mathcal{B}$$(J/蠄\to纬畏^\prime)$=… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.13725v1-abstract-full').style.display = 'inline'; document.getElementById('2308.13725v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.13725v1-abstract-full" style="display: none;"> Using a data sample of $(1.0087\pm 0.0044)\times 10^{10}$ $J/蠄$ events collected with the BESIII detector, the decays of $J/蠄\to纬蟺^{0} (畏, 畏^\prime)\to纬纬纬$ are studied. Newly measured branching fractions are $\mathcal{B}$$(J/蠄\to纬蟺^{0})$=$(3.34\pm 0.02\pm 0.09)\times 10^{-5}$, $\mathcal{B}$$(J/蠄\to纬畏)$=$(1.096\pm 0.001\pm0.019)\times 10^{-3}$ and $\mathcal{B}$$(J/蠄\to纬畏^\prime)$=$(5.40\pm 0.01\pm0.11)\times 10^{-3}$, where the first uncertainties are statistical and the second are systematic. These results are consistent with the world average values within two standard deviations. The ratio of partial widths $螕(J/蠄\to纬畏^\prime)/螕(J/蠄\to纬畏)$ is measured to be $4.93 \pm 0.13$. The singlet-octet pseudoscalar mixing angle $胃_P$ is determined to be $胃_P = -(22.11 \pm0.26)^\circ$ or $-(19.34 \pm 0.34)^\circ$ with two different phenomenological models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.13725v1-abstract-full').style.display = 'none'; document.getElementById('2308.13725v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.08161">arXiv:2308.08161</a> <span> [<a href="https://arxiv.org/pdf/2308.08161">pdf</a>, <a href="https://arxiv.org/ps/2308.08161">ps</a>, <a href="https://arxiv.org/format/2308.08161">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Study of $e^+e^-\to畏蠁$ at center-of-mass energies from 3.773 to 4.600 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (600 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2308.08161v2-abstract-short" style="display: inline;"> We present a study of the process $e^{+}e^{-}\to畏蠁$ using data samples collected with the BESIII detector corresponding to an integrated luminosity of 15.03 fb$^{-1}$ at 23 center-of-mass energies from 3.773 to 4.600 GeV. The Born cross sections are measured at each energy and a coherent fit to cross-section lineshape is performed using a Breit-Wigner parametrization to search for charmonium-like… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.08161v2-abstract-full').style.display = 'inline'; document.getElementById('2308.08161v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.08161v2-abstract-full" style="display: none;"> We present a study of the process $e^{+}e^{-}\to畏蠁$ using data samples collected with the BESIII detector corresponding to an integrated luminosity of 15.03 fb$^{-1}$ at 23 center-of-mass energies from 3.773 to 4.600 GeV. The Born cross sections are measured at each energy and a coherent fit to cross-section lineshape is performed using a Breit-Wigner parametrization to search for charmonium-like vector states. No significant signals of the $Y(4230)$ and $Y(4360)$ resonances are observed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.08161v2-abstract-full').style.display = 'none'; document.getElementById('2308.08161v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 5(8) figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> about 4000 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.05490">arXiv:2308.05490</a> <span> [<a href="https://arxiv.org/pdf/2308.05490">pdf</a>, <a href="https://arxiv.org/format/2308.05490">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for the lepton number violation decay $蠁\to 蟺^+ 蟺^+ e^- e^-$ via $J/蠄\to 蠁畏$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a>, <a href="/search/hep-ex?searchtype=author&query=Cai%2C+H">H. Cai</a> , et al. (584 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2308.05490v1-abstract-short" style="display: inline;"> Using $(1.0087\pm0.0044)\times10^{10}$ $J/蠄$ events collected by the BESIII detector at the BEPCII collider, we search for the lepton number violation decay $蠁\to 蟺^+ 蟺^+ e^- e^-$ via $J/蠄\to 蠁畏$. No signal is found and the upper limit on the branching fraction of $蠁\to 蟺^+ 蟺^+ e^- e^-$ is set to be $9.7\times10^{-6}$ at the 90\% confidence level. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.05490v1-abstract-full" style="display: none;"> Using $(1.0087\pm0.0044)\times10^{10}$ $J/蠄$ events collected by the BESIII detector at the BEPCII collider, we search for the lepton number violation decay $蠁\to 蟺^+ 蟺^+ e^- e^-$ via $J/蠄\to 蠁畏$. No signal is found and the upper limit on the branching fraction of $蠁\to 蟺^+ 蟺^+ e^- e^-$ is set to be $9.7\times10^{-6}$ at the 90\% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.05490v1-abstract-full').style.display = 'none'; document.getElementById('2308.05490v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 5 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.03361">arXiv:2308.03361</a> <span> [<a href="https://arxiv.org/pdf/2308.03361">pdf</a>, <a href="https://arxiv.org/format/2308.03361">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the $e^+e^- \to 螞\bar危^0 + c.c.$ cross sections at $\sqrt{s}$ from 2.3094 to 3.0800 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (601 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2308.03361v1-abstract-short" style="display: inline;"> The Born cross sections and effective form factors of the process $e^+e^-\to螞\bar危^0 + c.c.$ are measured at 14 center-of-mass energy points from 2.3094 to 3.0800 GeV, based on data corresponding to an integrated luminosity of $(478.5 \pm 4.8)\ \text{pb}^{-1}$ collected with the BESIII detector. A non-zero Born cross section is observed at the center-of-mass energy of 2.3094 GeV with a statistical… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.03361v1-abstract-full').style.display = 'inline'; document.getElementById('2308.03361v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.03361v1-abstract-full" style="display: none;"> The Born cross sections and effective form factors of the process $e^+e^-\to螞\bar危^0 + c.c.$ are measured at 14 center-of-mass energy points from 2.3094 to 3.0800 GeV, based on data corresponding to an integrated luminosity of $(478.5 \pm 4.8)\ \text{pb}^{-1}$ collected with the BESIII detector. A non-zero Born cross section is observed at the center-of-mass energy of 2.3094 GeV with a statistical significance of more than five standard deviations, and the cross sections at other energies are obtained with improved precision compared to earlier measurements from the BaBar Collaboration. The Born cross-section lineshape is described better by a shape with a plateau near the threshold than by a pQCD motivated functional form. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.03361v1-abstract-full').style.display = 'none'; document.getElementById('2308.03361v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2307.15894">arXiv:2307.15894</a> <span> [<a href="https://arxiv.org/pdf/2307.15894">pdf</a>, <a href="https://arxiv.org/ps/2307.15894">ps</a>, <a href="https://arxiv.org/format/2307.15894">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.132.081904">10.1103/PhysRevLett.132.081904 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Determination of the $危^{+}$ Timelike Electromagnetic Form Factors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (604 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2307.15894v2-abstract-short" style="display: inline;"> Based on data samples collected with the BESIII detector at the BEPCII collider, the process $e^{+}e^{-} \to 危^{+}\bar危^{-}$ is studied at center-of-mass energies $\sqrt{s}$ = 2.3960, 2.6454, and 2.9000 GeV. Using a fully differential angular description of the final state particles, both the relative magnitude and phase information of the $危^{+}$ electromagnetic form factors in the timelike regio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.15894v2-abstract-full').style.display = 'inline'; document.getElementById('2307.15894v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2307.15894v2-abstract-full" style="display: none;"> Based on data samples collected with the BESIII detector at the BEPCII collider, the process $e^{+}e^{-} \to 危^{+}\bar危^{-}$ is studied at center-of-mass energies $\sqrt{s}$ = 2.3960, 2.6454, and 2.9000 GeV. Using a fully differential angular description of the final state particles, both the relative magnitude and phase information of the $危^{+}$ electromagnetic form factors in the timelike region are extracted. The relative phase between the electric and magnetic form factors is determined to be $\sin螖桅$ = -0.67~$\pm$~0.29~(stat)~$\pm$~0.18~(syst) at $\sqrt{s}$ = 2.3960 GeV, $螖桅$ = 55$^{\circ}$~$\pm$~19$^{\circ}$~(stat) $\pm$~14$^{\circ}$~(syst) at $\sqrt{s}$ = 2.6454 GeV, and 78$^{\circ}$~$\pm$~22$^{\circ}$~(stat) $\pm$~9$^{\circ}$~(syst) at $\sqrt{s}$ = 2.9000 GeV. For the first time, the phase of the hyperon electromagnetic form factors is explored in a wide range of four-momentum transfer. The evolution of the phase along with four-momentum transfer is an important input for understanding its asymptotic behavior and the dynamics of baryons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.15894v2-abstract-full').style.display = 'none'; document.getElementById('2307.15894v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 July, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 132, 081904 (2024) </p> </li> </ol> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=An%2C+M+R&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=An%2C+M+R&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=An%2C+M+R&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> <li> <a href="/search/?searchtype=author&query=An%2C+M+R&start=100" class="pagination-link " aria-label="Page 3" aria-current="page">3 </a> </li> <li> <a href="/search/?searchtype=author&query=An%2C+M+R&start=150" class="pagination-link " aria-label="Page 4" aria-current="page">4 </a> </li> <li> <a href="/search/?searchtype=author&query=An%2C+M+R&start=200" 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