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class="pagination-link " aria-label="Page 5" aria-current="page">5 </a> </li> <li><span class="pagination-ellipsis">…</span></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/2502.16084">arXiv:2502.16084</a> <span> [<a href="https://arxiv.org/pdf/2502.16084">pdf</a>, <a href="https://arxiv.org/format/2502.16084">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"> Single Inclusive $蟺^\pm$ and $K^\pm$ Production in $e^+e^-$ Annihilation at center-of-mass Energies from 2.000 to 3.671GeV </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+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=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>, <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. (707 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="2502.16084v1-abstract-short" style="display: inline;"> Using data samples with a total integrated luminosity of 253 $\rm pb^{-1}$ collected by the BESIII detector operating at the BEPCII collider, the differential cross-sections of inclusive $蟺^\pm$ and $K^\pm$ production, as a function of momentum and normalized by the total hadronic cross-section, are measured at center-of-mass energies from 2.000 to 3.671 GeV. The measured $蟺^{\pm}$ cross sections… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.16084v1-abstract-full').style.display = 'inline'; document.getElementById('2502.16084v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.16084v1-abstract-full" style="display: none;"> Using data samples with a total integrated luminosity of 253 $\rm pb^{-1}$ collected by the BESIII detector operating at the BEPCII collider, the differential cross-sections of inclusive $蟺^\pm$ and $K^\pm$ production, as a function of momentum and normalized by the total hadronic cross-section, are measured at center-of-mass energies from 2.000 to 3.671 GeV. The measured $蟺^{\pm}$ cross sections are consistent with the previously reported $蟺^{0}$ cross-sections by BESIII, while the $K^{\pm}$ cross sections are systematically higher than the $K^0_S$ cross sections by a factor of approximately 1.4. These new results are in agreement with state-of-the-art QCD analyses at next-to-next-to-leading order accuracy, particularly in the large hadron momentum region at energy scales down to 3 GeV. These findings support the validity of isospin symmetry in parton fragmentation processes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.16084v1-abstract-full').style.display = 'none'; document.getElementById('2502.16084v1-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.15117">arXiv:2502.15117</a> <span> [<a href="https://arxiv.org/pdf/2502.15117">pdf</a>, <a href="https://arxiv.org/format/2502.15117">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Hadron Production in Open-charm Meson Pair at $e^+e^-$ Collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Wang%2C+X">Xiongfei Wang</a>, <a href="/search/hep-ex?searchtype=author&query=Liu%2C+X">Xiang Liu</a>, <a href="/search/hep-ex?searchtype=author&query=Gao%2C+Y">Yuanning Gao</a> </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="2502.15117v1-abstract-short" style="display: inline;"> The standard model of particle physics is a well-established theoretical framework, yet there remain several unresolved issues that warrant further experimental and theoretical exploration. In the realm of quark physics, these include understanding the nature of quark confinement and elucidating the mechanism linking quarks and gluons to strongly interacting particles within the standard model the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.15117v1-abstract-full').style.display = 'inline'; document.getElementById('2502.15117v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.15117v1-abstract-full" style="display: none;"> The standard model of particle physics is a well-established theoretical framework, yet there remain several unresolved issues that warrant further experimental and theoretical exploration. In the realm of quark physics, these include understanding the nature of quark confinement and elucidating the mechanism linking quarks and gluons to strongly interacting particles within the standard model theory, which may offer insights into underlying physics mechanisms. These inquiries can be addressed through the study of hadron production in open-charm meson pair final states at $e^+e^-$ annihilations utilizing the capabilities of BABAR, Belle, BESIII, and CLEO-c experiments, which have yielded valuable insights into non-standard hadrons over recent decades. This review examines the contributions of $e^+e^-$ colliders from BABAR, Belle, BESIII, and CLEO-c experiments to such studies and discusses future prospects for $e^+e^-$ collider experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.15117v1-abstract-full').style.display = 'none'; document.getElementById('2502.15117v1-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> 20 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </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">19 pages, 22 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/2502.13540">arXiv:2502.13540</a> <span> [<a href="https://arxiv.org/pdf/2502.13540">pdf</a>, <a href="https://arxiv.org/format/2502.13540">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"> Amplitude analysis of $蠄(3686)\to 纬K_S^0 K_S^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+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=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>, <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. (704 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="2502.13540v1-abstract-short" style="display: inline;"> Using $(2712\pm14)\times10^6$ $蠄(3686)$ events collected with the BESIII detector, we perform the first amplitude analysis of the radiative decay $蠄(3686)\to 纬K_S^0 K_S^0$ within the mass region $M_{K_S^0 K_S^0 }<2.8$ GeV/$c^2$. Employing a one-channel K-matrix approach for the description of the dynamics of the $K^0_S K^0_S$ system, the data sample is well described with four poles for the $f_0$-… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.13540v1-abstract-full').style.display = 'inline'; document.getElementById('2502.13540v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.13540v1-abstract-full" style="display: none;"> Using $(2712\pm14)\times10^6$ $蠄(3686)$ events collected with the BESIII detector, we perform the first amplitude analysis of the radiative decay $蠄(3686)\to 纬K_S^0 K_S^0$ within the mass region $M_{K_S^0 K_S^0 }<2.8$ GeV/$c^2$. Employing a one-channel K-matrix approach for the description of the dynamics of the $K^0_S K^0_S$ system, the data sample is well described with four poles for the $f_0$-wave and three poles for the $f_2$-wave. The determined pole positions are consistent with those of well-established resonance states. The observed $f_0$ and $f_{2}$ states are found to be qualitatively consistent with those produced in radiative $J/蠄$ decays, indicating the similarity between the two charmonium states in their radiative decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.13540v1-abstract-full').style.display = 'none'; document.getElementById('2502.13540v1-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </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">20 pages, 4 figures, submitted to JHEP</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.11047">arXiv:2502.11047</a> <span> [<a href="https://arxiv.org/pdf/2502.11047">pdf</a>, <a href="https://arxiv.org/ps/2502.11047">ps</a>, <a href="https://arxiv.org/format/2502.11047">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 Cabibbo-suppressed decays $螞_c^{+}\to危^0K^{+}蟺^{0}$ and $螞_c^{+}\to危^0K^{+}蟺^{+}蟺^{-}$ </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+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=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>, <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. (687 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="2502.11047v1-abstract-short" style="display: inline;"> Utilizing 4.5 $fb^-$ of $e^+e^-$ annihilation data collected at center-of-mass energies ranging from 4599.53 MeV to 4698.82 MeV by the BESIII detector at the BEPCII collider, we search for the singly Cabibbo-suppressed hadronic decays $螞_{c}^{+}\to危^{0} K^{+}蟺^{0}$ and $螞_{c}^{+}\to危^{0}K^{+}蟺^+蟺^-$ with a single-tag method. No significant signals are observed for both decays. The upper limits on… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.11047v1-abstract-full').style.display = 'inline'; document.getElementById('2502.11047v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.11047v1-abstract-full" style="display: none;"> Utilizing 4.5 $fb^-$ of $e^+e^-$ annihilation data collected at center-of-mass energies ranging from 4599.53 MeV to 4698.82 MeV by the BESIII detector at the BEPCII collider, we search for the singly Cabibbo-suppressed hadronic decays $螞_{c}^{+}\to危^{0} K^{+}蟺^{0}$ and $螞_{c}^{+}\to危^{0}K^{+}蟺^+蟺^-$ with a single-tag method. No significant signals are observed for both decays. The upper limits on the branching fractions at the $90\%$ confidence level are determined to be $5.0\times 10^{-4}$ for $螞_{c}^{+}\to危^{0} K^{+}蟺^{0}$ and $6.5\times 10^{-4}$ for $螞_c^{+}\to危^0K^{+}蟺^{+}蟺^{-}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.11047v1-abstract-full').style.display = 'none'; document.getElementById('2502.11047v1-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> 16 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </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, 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/2502.08929">arXiv:2502.08929</a> <span> [<a href="https://arxiv.org/pdf/2502.08929">pdf</a>, <a href="https://arxiv.org/ps/2502.08929">ps</a>, <a href="https://arxiv.org/format/2502.08929">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"> Precise Measurement of the $蠂_{c0}$ Resonance Parameters and Branching Fractions of $蠂_{c0,c2}\to蟺^+蟺^-/K^+K^-$ </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=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>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (648 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="2502.08929v1-abstract-short" style="display: inline;"> By analyzing a $蠄(3686)$ data sample containing $(107.7\pm0.6)\times10^{6}$ events taken with the BESIII detector at the BEPCII storage ring in 2009, the $蠂_{c0}$ resonance parameters are precisely measured using $蠂_{c0,c2} \to 蟺^+蟺^-/K^+K^-$ events. The mass of $蠂_{c0}$ is determined to be $M(蠂_{c0})=(3415.67\pm0.07\pm0.06\pm0.07$)~MeV/$c^2$, and its full width is… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.08929v1-abstract-full').style.display = 'inline'; document.getElementById('2502.08929v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.08929v1-abstract-full" style="display: none;"> By analyzing a $蠄(3686)$ data sample containing $(107.7\pm0.6)\times10^{6}$ events taken with the BESIII detector at the BEPCII storage ring in 2009, the $蠂_{c0}$ resonance parameters are precisely measured using $蠂_{c0,c2} \to 蟺^+蟺^-/K^+K^-$ events. The mass of $蠂_{c0}$ is determined to be $M(蠂_{c0})=(3415.67\pm0.07\pm0.06\pm0.07$)~MeV/$c^2$, and its full width is $螕(蠂_{c0})=(12.44\pm0.12\pm0.12)~{\rm MeV}$, where the first uncertainty is statistical, the second systematic, and the third for mass comes from $蠂_{c2}$ mass uncertainty. These measurements improve the precision of $蠂_{c0}$ mass by a factor of four and width by one order of magnitude over the previous individual measurements, and significantly boost our knowledge about the charmonium spectrum. Together with additional $(345.4\pm2.6)\times10^{6}$ $蠄(3686)$ data events taken in 2012, the decay branching fractions of $蠂_{c0,c2}\to蟺^+蟺^-/K^+K^-$ are measured as well, with precision improved by a factor of three compared to previous measurements. These $蠂_{c0}$ decay branching fractions provide important inputs for the study of glueballs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.08929v1-abstract-full').style.display = 'none'; document.getElementById('2502.08929v1-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </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, 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/2502.08072">arXiv:2502.08072</a> <span> [<a href="https://arxiv.org/pdf/2502.08072">pdf</a>, <a href="https://arxiv.org/format/2502.08072">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 - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Unraveling charmonium mixing scheme for the $蠄(4220)$ and $蠄(4380)$ by a coupled-channel approach </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Man%2C+Z">Zi-Long Man</a>, <a href="/search/hep-ex?searchtype=author&query=Luo%2C+S">Si-Qiang Luo</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Z">Zi-Yue Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Liu%2C+X">Xiang Liu</a> </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="2502.08072v1-abstract-short" style="display: inline;"> Among charmoniumlike $XYZ$ states, the $蠄(4220)$ and $蠄(4380)$ states have emerged as key candidates for exploring the charmonium spectrum. In this work, we propose a $4S$-$3D$ charmonium mixing scheme for the $蠄(4220)$ and $蠄(4380)$, induced by coupled-channel effects. By constructing a coupled-channel model, we identify the dynamical mechanism responsible for the large mixing angle observed in p… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.08072v1-abstract-full').style.display = 'inline'; document.getElementById('2502.08072v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.08072v1-abstract-full" style="display: none;"> Among charmoniumlike $XYZ$ states, the $蠄(4220)$ and $蠄(4380)$ states have emerged as key candidates for exploring the charmonium spectrum. In this work, we propose a $4S$-$3D$ charmonium mixing scheme for the $蠄(4220)$ and $蠄(4380)$, induced by coupled-channel effects. By constructing a coupled-channel model, we identify the dynamical mechanism responsible for the large mixing angle observed in previous studies, which cannot be explained by conventional potential models alone. Our analysis reveals that the $DD_1$ channel significantly influences the lower state ($蠄(4220)$), while the $D^*D_1$ channel primarily affects the higher state ($蠄(4380)$). Furthermore, we investigate the two-body Okubo-Zweig-Iizuka (OZI)-allowed strong decay behaviors of these states, providing insights into their total widths. This study not only supports the $4S$-$3D$ mixing scheme but also offers a deeper understanding of the role of coupled channels in shaping the charmonium spectrum above 4 GeV. Our results align with experimental observations and provide a framework for interpreting future data on charmonium states. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.08072v1-abstract-full').style.display = 'none'; document.getElementById('2502.08072v1-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </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, 4 figures and 3 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.07406">arXiv:2502.07406</a> <span> [<a href="https://arxiv.org/pdf/2502.07406">pdf</a>, <a href="https://arxiv.org/format/2502.07406">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 $e^+e^-\to K_S^0 K_S^0 h_c$ </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=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+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. (642 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="2502.07406v1-abstract-short" style="display: inline;"> Using $e^+e^-$ collision data at 13 center-of-mass energies ranging from 4.600 to 4.950 GeV collected with the BESIII detector, we search for the unmeasured $e^+e^-\to K_S^0 K_S^0 h_c$ process . No significant signal is observed, and the upper limits of the Born cross sections at each center-of-mass energy are presented. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.07406v1-abstract-full" style="display: none;"> Using $e^+e^-$ collision data at 13 center-of-mass energies ranging from 4.600 to 4.950 GeV collected with the BESIII detector, we search for the unmeasured $e^+e^-\to K_S^0 K_S^0 h_c$ process . No significant signal is observed, and the upper limits of the Born cross sections at each center-of-mass energy are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.07406v1-abstract-full').style.display = 'none'; document.getElementById('2502.07406v1-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.05754">arXiv:2502.05754</a> <span> [<a href="https://arxiv.org/pdf/2502.05754">pdf</a>, <a href="https://arxiv.org/format/2502.05754">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 - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> The role of $4S$-$3D$ mixing in explaining the $蠅$-like $Y(2119)$ observed in $e^+e^-$ annihilation to $蟻蟺$ and $蟻(1450)蟺$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Z">Zi-Yue Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Zhou%2C+Q">Qin-Song Zhou</a>, <a href="/search/hep-ex?searchtype=author&query=Liu%2C+X">Xiang Liu</a> </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="2502.05754v1-abstract-short" style="display: inline;"> The BESIII Collaboration has recently reported a new resonance structure in the cross-section analyses of the $e^+e^- \to 蟻蟺$ and $e^+e^- \to 蟻(1450)蟺$ processes, displaying characteristics akin to an $蠅$-meson. However, its measured mass, $M = 2119 \pm 11 \pm 15 \, \text{MeV}$, significantly deviates from the predictions of the unquenched relativized potential model for conventional $蠅$ vector me… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.05754v1-abstract-full').style.display = 'inline'; document.getElementById('2502.05754v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.05754v1-abstract-full" style="display: none;"> The BESIII Collaboration has recently reported a new resonance structure in the cross-section analyses of the $e^+e^- \to 蟻蟺$ and $e^+e^- \to 蟻(1450)蟺$ processes, displaying characteristics akin to an $蠅$-meson. However, its measured mass, $M = 2119 \pm 11 \pm 15 \, \text{MeV}$, significantly deviates from the predictions of the unquenched relativized potential model for conventional $蠅$ vector meson spectroscopy. To address this discrepancy, we propose a $4S$-$3D$ mixing scheme and investigate the corresponding decay properties within this framework. Our analysis demonstrates that the mixed state $蠅_{4S\text{-}3D}^\prime$ exhibits excellent agreement with the observed resonance, not only in mass and width but also in the products of its dielectron width and branching ratios, $螕_{e^+e^-}^{\mathcal{R}}\times\mathcal{B}_{\mathcal{R}\to蟻蟺}$ and $螕_{e^+e^-}^{\mathcal{R}}\times\mathcal{B}_{\mathcal{R}\to蟻(1450)蟺\to蟺^+蟺^-蟺^0}$. The determined mixing angle, $胃= -\left(31.1^{+2.1}_{-3.1}\right)\degree$, strongly supports the interpretation of this structure as the $蠅_{4S\text{-}3D}^\prime$ state. Furthermore, we predict dominant decay channels for $蠅_{4S\text{-}3D}^\prime$ and its partner state $蠅_{4S\text{-}3D}^{\prime\prime}$. These predictions, together with the proposed mixing mechanism, provide crucial guidance for future experimental studies aimed at probing this structure and rigorously testing the $4S$-$3D$ mixing hypothesis. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.05754v1-abstract-full').style.display = 'none'; document.getElementById('2502.05754v1-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </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">6 pages, 1 figure and 4 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.03828">arXiv:2502.03828</a> <span> [<a href="https://arxiv.org/pdf/2502.03828">pdf</a>, <a href="https://arxiv.org/ps/2502.03828">ps</a>, <a href="https://arxiv.org/format/2502.03828">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 $D^+\to \bar K_1(1270)^0渭^+谓_渭$ and $D^0\to K_1(1270)^-渭^+谓_渭$ </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=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+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. (646 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="2502.03828v1-abstract-short" style="display: inline;"> By analyzing 7.93 $\rm fb^{-1}$ of $e^+e^-$ collision data collected at the center-of-mass energy of 3.773 GeV with the BESIII detector operated at the BEPCII collider, we report the observation of the semimuonic decays of $D^+\to \bar K_1(1270)^0渭^+谓_渭$ and $D^0\to K_1(1270)^-渭^+谓_渭$ with statistical significances of $12.5蟽$ and $6.0蟽$, respectively. Their decay branching fractions are determined… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.03828v1-abstract-full').style.display = 'inline'; document.getElementById('2502.03828v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.03828v1-abstract-full" style="display: none;"> By analyzing 7.93 $\rm fb^{-1}$ of $e^+e^-$ collision data collected at the center-of-mass energy of 3.773 GeV with the BESIII detector operated at the BEPCII collider, we report the observation of the semimuonic decays of $D^+\to \bar K_1(1270)^0渭^+谓_渭$ and $D^0\to K_1(1270)^-渭^+谓_渭$ with statistical significances of $12.5蟽$ and $6.0蟽$, respectively. Their decay branching fractions are determined to be ${\mathcal B}[D^{+}\to \bar{K}_1(1270)^0 渭^{+}谓_渭]=(2.36\pm0.20^{+0.18}_{-0.27}\pm 0.48)\times10^{-3}$ and ${\mathcal B}[D^{0}\to K_1(1270)^{-} 渭^{+}谓_渭]=(0.78\pm0.11^{+0.05}_{-0.09}\pm 0.15)\times10^{-3}$, where the first and second uncertainties are statistical and systematic, respectively, and the third originates from the input branching fraction of $\bar K_{1}(1270)^0\to K^- 蟺^+蟺^0$ or $K_1(1270)^-\to K^-蟺^+蟺^-$. Combining our branching fractions with the previous measurements of ${\mathcal B}[D^+\to \bar K_1(1270)^0e^+谓_{e}]$ and ${\mathcal B}[D^0\to K_1(1270)^-e^+谓_{e}]$, we determine the branching fraction ratios to be ${\mathcal B}[D^+\to \bar K_1(1270)^0渭^+谓_渭]/{\mathcal B}[D^+\to \bar K_1(1270)^0e^+谓_{e}]=1.03 \pm 0.14 \substack{+0.11\\-0.15}$ and ${\mathcal B}[D^0\to K_1(1270)^-渭^+谓_渭]/{\mathcal B}[D^0\to K_1(1270)^-e^+谓_{e}]=0.74\pm 0.13 \substack{+0.08\\-0.13}$. Using the branching fractions measured in this work and the world-average lifetimes of the $D^+$ and $D^0$ mesons, we determine the semimuonic partial decay width ratio to be $螕[D^+\to \bar K_1(1270)^0 渭^+谓_渭]/螕[D^0\to K_1(1270)^- 渭^+谓_渭]=1.22\pm 0.10\substack{+0.06\\-0.09}$, which is consistent with unity as predicted by isospin conservation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.03828v1-abstract-full').style.display = 'none'; document.getElementById('2502.03828v1-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </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, 2 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/2501.15447">arXiv:2501.15447</a> <span> [<a href="https://arxiv.org/pdf/2501.15447">pdf</a>, <a href="https://arxiv.org/ps/2501.15447">ps</a>, <a href="https://arxiv.org/format/2501.15447">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 $h_{c}$ radiative decays to multiple light hadrons and the tensor state $f_2(1270)$ </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+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=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>, <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. (666 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="2501.15447v1-abstract-short" style="display: inline;"> Using $蠄(3686)\rightarrow 蟺^{0} h_{c}$ decays from a data sample of $(27.12\pm0.14)\times10^{8}$ $蠄(3686)$ events collected by the BESIII detector at the BEPCII collider, $h_c$ radiative decays to $纬蟺^{+}蟺^{-},~纬蟺^{+}蟺^{-}畏,~\gamma2(蟺^{+}蟺^{-})$, and $纬p\bar{p}$ are observed for the first time, each with a significance greater than $5蟽$. The corresponding branching fractions are measured. Furtherm… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.15447v1-abstract-full').style.display = 'inline'; document.getElementById('2501.15447v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.15447v1-abstract-full" style="display: none;"> Using $蠄(3686)\rightarrow 蟺^{0} h_{c}$ decays from a data sample of $(27.12\pm0.14)\times10^{8}$ $蠄(3686)$ events collected by the BESIII detector at the BEPCII collider, $h_c$ radiative decays to $纬蟺^{+}蟺^{-},~纬蟺^{+}蟺^{-}畏,~\gamma2(蟺^{+}蟺^{-})$, and $纬p\bar{p}$ are observed for the first time, each with a significance greater than $5蟽$. The corresponding branching fractions are measured. Furthermore, intermediate states below 2.8 GeV/$c^{2}$ are investigated, leading to the first observation of the decay process of $h_c\rightarrow纬f_{2}(1270)\rightarrow纬蟺^{+}蟺^{-}$ with a significance of $5.5\,蟽$. This observation represents the first instance of $h_c$ radiative decay to a tensor state. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.15447v1-abstract-full').style.display = 'none'; document.getElementById('2501.15447v1-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, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.14206">arXiv:2501.14206</a> <span> [<a href="https://arxiv.org/pdf/2501.14206">pdf</a>, <a href="https://arxiv.org/ps/2501.14206">ps</a>, <a href="https://arxiv.org/format/2501.14206">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"> Cross section measurement of $e^{+}e^{-} \to f_{1}(1285)蟺^{+}蟺^{-}$ at center-of-mass energies between $3.808$ and $4.951\rm GeV$ </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=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+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. (639 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="2501.14206v1-abstract-short" style="display: inline;"> Using data samples collected by the \mbox{BESIII} detector located at the Beijing Electron Positron Collider, the cross sections of the process $e^+e^-\to f_{1}(1285)蟺^+蟺^-$ are measured at forty-five center-of-mass energies from $3.808$ to $4.951 {\rm GeV}$. An investigation on the cross section line shape is performed, and no significant structure is observed. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.14206v1-abstract-full" style="display: none;"> Using data samples collected by the \mbox{BESIII} detector located at the Beijing Electron Positron Collider, the cross sections of the process $e^+e^-\to f_{1}(1285)蟺^+蟺^-$ are measured at forty-five center-of-mass energies from $3.808$ to $4.951 {\rm GeV}$. An investigation on the cross section line shape is performed, and no significant structure is observed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.14206v1-abstract-full').style.display = 'none'; document.getElementById('2501.14206v1-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 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.10130">arXiv:2501.10130</a> <span> [<a href="https://arxiv.org/pdf/2501.10130">pdf</a>, <a href="https://arxiv.org/format/2501.10130">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 $畏\rightarrow蟺^+蟺^-l^+l^-$ </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+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. (637 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="2501.10130v1-abstract-short" style="display: inline;"> Using a sample of $(10087\pm44)\times10^{6}$ $J/蠄$ events accumulated with the BESIII detector, we analyze the decays $畏\rightarrow蟺^+蟺^-l^+l^-$ ($l=e$ or $渭$) via the process $J/蠄\rightarrow纬畏$. The branching fraction of $畏\rightarrow蟺^+蟺^-e^+e^-$ is measured to be $\mathcal{B}(畏\rightarrow蟺^+蟺^-e^+e^-)=(3.07\pm0.12_{\rm{stat.}}\pm0.19_{\rm{syst.}}) \times10^{-4}$. No signal events are observed f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.10130v1-abstract-full').style.display = 'inline'; document.getElementById('2501.10130v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.10130v1-abstract-full" style="display: none;"> Using a sample of $(10087\pm44)\times10^{6}$ $J/蠄$ events accumulated with the BESIII detector, we analyze the decays $畏\rightarrow蟺^+蟺^-l^+l^-$ ($l=e$ or $渭$) via the process $J/蠄\rightarrow纬畏$. The branching fraction of $畏\rightarrow蟺^+蟺^-e^+e^-$ is measured to be $\mathcal{B}(畏\rightarrow蟺^+蟺^-e^+e^-)=(3.07\pm0.12_{\rm{stat.}}\pm0.19_{\rm{syst.}}) \times10^{-4}$. No signal events are observed for the $畏\rightarrow蟺^{+}蟺^{-}渭^{+}渭^{-}$ decay, leading to an upper limit on the branching fraction of $\mathcal{B}(畏\rightarrow蟺^{+}蟺^{-}渭^{+}渭^{-})<4.0\times10^{-7}$ at the 90\% confidence level. Furthermore, the $CP$-violation asymmetry parameter is found to be $\mathcal{A}_{CP}(畏\rightarrow蟺^{+}蟺^{-}e^{+}e^{-})=(-4.04\pm4.69_{\rm{stat.}}\pm0.14_{\rm{syst.}})\%$, showing no evidence of $CP$-violation with current statistics. Additionally, we extract the transition form factor from the decay amplitude of $畏\rightarrow蟺^+蟺^-e^+e^-$. Finally, axion-like particles are searched for via the decay $畏\rightarrow蟺^+蟺^-a, a\rightarrow e^+e^-$, and upper limits on this branching fraction relative to that of $畏\rightarrow蟺^+蟺^-e^+e^-$ are presented as a function of the axion-like particle mass in the range $5-200\ \mathrm{MeV}/c^{2}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.10130v1-abstract-full').style.display = 'none'; document.getElementById('2501.10130v1-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, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.08080">arXiv:2501.08080</a> <span> [<a href="https://arxiv.org/pdf/2501.08080">pdf</a>, <a href="https://arxiv.org/format/2501.08080">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 FCNC charmonium decay $J/蠄\to D^0 渭^+ 渭^- + \text{c.c.}$ </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=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+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=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>, <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. (680 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="2501.08080v2-abstract-short" style="display: inline;"> Based on a data sample of $(10087 \pm 44) \times 10^6$ $J/蠄$ events taken with the BESIII detector, we search for the flavor-changing neutral current charmonium decay $J/蠄\to D^{0} 渭^{+} 渭^{-} + \text{c.c.}$. No significant signal above the background is observed, and the upper limit on its branching fraction is set to be $\mathcal{B}(J/蠄\to D^{0}渭^{+}渭^{-} + \text{c.c.} ) < 1.1 \times 10^{-7}$ at… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.08080v2-abstract-full').style.display = 'inline'; document.getElementById('2501.08080v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.08080v2-abstract-full" style="display: none;"> Based on a data sample of $(10087 \pm 44) \times 10^6$ $J/蠄$ events taken with the BESIII detector, we search for the flavor-changing neutral current charmonium decay $J/蠄\to D^{0} 渭^{+} 渭^{-} + \text{c.c.}$. No significant signal above the background is observed, and the upper limit on its branching fraction is set to be $\mathcal{B}(J/蠄\to D^{0}渭^{+}渭^{-} + \text{c.c.} ) < 1.1 \times 10^{-7}$ at the 90% confidence level. This marks the first search for a flavor-changing neutral current charmonium decay involving muons in the final state. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.08080v2-abstract-full').style.display = 'none'; document.getElementById('2501.08080v2-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </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">20 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/2501.06426">arXiv:2501.06426</a> <span> [<a href="https://arxiv.org/pdf/2501.06426">pdf</a>, <a href="https://arxiv.org/format/2501.06426">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 $K^0_S$ invisible 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+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. (642 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="2501.06426v1-abstract-short" style="display: inline;"> Based on $(1.0087\pm0.0044)\times10^{10}$ $J/蠄$ events collected with the BESIII detector at the BEPCII $e^+e^-$ storage ring, we search for $K_{S}^{0}$ invisible decays via the $J/蠄\to 蠁K_{S}^{0} K_{S}^{0}$ process. No significant signal is observed, and the upper limit of the branching fraction of these invisible decays is set at 8.4 $\times$ $10^{-4}$ at the 90\% confidence level. This is the f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.06426v1-abstract-full').style.display = 'inline'; document.getElementById('2501.06426v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.06426v1-abstract-full" style="display: none;"> Based on $(1.0087\pm0.0044)\times10^{10}$ $J/蠄$ events collected with the BESIII detector at the BEPCII $e^+e^-$ storage ring, we search for $K_{S}^{0}$ invisible decays via the $J/蠄\to 蠁K_{S}^{0} K_{S}^{0}$ process. No significant signal is observed, and the upper limit of the branching fraction of these invisible decays is set at 8.4 $\times$ $10^{-4}$ at the 90\% confidence level. This is the first experimental search for $K^0_S$ invisible decays. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.06426v1-abstract-full').style.display = 'none'; document.getElementById('2501.06426v1-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 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.04845">arXiv:2501.04845</a> <span> [<a href="https://arxiv.org/pdf/2501.04845">pdf</a>, <a href="https://arxiv.org/ps/2501.04845">ps</a>, <a href="https://arxiv.org/format/2501.04845">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Intelligent experiments through real-time AI: Fast Data Processing and Autonomous Detector Control for sPHENIX and future EIC detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Kvapil%2C+J">J. Kvapil</a>, <a href="/search/hep-ex?searchtype=author&query=Borca-Tasciuc%2C+G">G. Borca-Tasciuc</a>, <a href="/search/hep-ex?searchtype=author&query=Bossi%2C+H">H. Bossi</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+K">K. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+Y">Y. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Morales%2C+Y+C">Y. Corrales Morales</a>, <a href="/search/hep-ex?searchtype=author&query=Da+Costa%2C+H">H. Da Costa</a>, <a href="/search/hep-ex?searchtype=author&query=Da+Silva%2C+C">C. Da Silva</a>, <a href="/search/hep-ex?searchtype=author&query=Dean%2C+C">C. Dean</a>, <a href="/search/hep-ex?searchtype=author&query=Durham%2C+J">J. Durham</a>, <a href="/search/hep-ex?searchtype=author&query=Fu%2C+S">S. Fu</a>, <a href="/search/hep-ex?searchtype=author&query=Hao%2C+C">C. Hao</a>, <a href="/search/hep-ex?searchtype=author&query=Harris%2C+P">P. Harris</a>, <a href="/search/hep-ex?searchtype=author&query=Hen%2C+O">O. Hen</a>, <a href="/search/hep-ex?searchtype=author&query=Jheng%2C+H">H. Jheng</a>, <a href="/search/hep-ex?searchtype=author&query=Lee%2C+Y">Y. Lee</a>, <a href="/search/hep-ex?searchtype=author&query=Li%2C+P">P. Li</a>, <a href="/search/hep-ex?searchtype=author&query=Li%2C+X">X. Li</a>, <a href="/search/hep-ex?searchtype=author&query=Lin%2C+Y">Y. Lin</a>, <a href="/search/hep-ex?searchtype=author&query=Liu%2C+M+X">M. X. Liu</a>, <a href="/search/hep-ex?searchtype=author&query=Loncar%2C+V">V. Loncar</a>, <a href="/search/hep-ex?searchtype=author&query=Mitrevski%2C+J+P">J. P. Mitrevski</a>, <a href="/search/hep-ex?searchtype=author&query=Olvera%2C+A">A. Olvera</a>, <a href="/search/hep-ex?searchtype=author&query=Purschke%2C+M+L">M. L. Purschke</a>, <a href="/search/hep-ex?searchtype=author&query=Renck%2C+J+S">J. S. Renck</a> , et al. (8 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="2501.04845v1-abstract-short" style="display: inline;"> This R\&D project, initiated by the DOE Nuclear Physics AI-Machine Learning initiative in 2022, leverages AI to address data processing challenges in high-energy nuclear experiments (RHIC, LHC, and future EIC). Our focus is on developing a demonstrator for real-time processing of high-rate data streams from sPHENIX experiment tracking detectors. The limitations of a 15 kHz maximum trigger rate imp… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.04845v1-abstract-full').style.display = 'inline'; document.getElementById('2501.04845v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.04845v1-abstract-full" style="display: none;"> This R\&D project, initiated by the DOE Nuclear Physics AI-Machine Learning initiative in 2022, leverages AI to address data processing challenges in high-energy nuclear experiments (RHIC, LHC, and future EIC). Our focus is on developing a demonstrator for real-time processing of high-rate data streams from sPHENIX experiment tracking detectors. The limitations of a 15 kHz maximum trigger rate imposed by the calorimeters can be negated by intelligent use of streaming technology in the tracking system. The approach efficiently identifies low momentum rare heavy flavor events in high-rate p+p collisions (3MHz), using Graph Neural Network (GNN) and High Level Synthesis for Machine Learning (hls4ml). Success at sPHENIX promises immediate benefits, minimizing resources and accelerating the heavy-flavor measurements. The approach is transferable to other fields. For the EIC, we develop a DIS-electron tagger using Artificial Intelligence - Machine Learning (AI-ML) algorithms for real-time identification, showcasing the transformative potential of AI and FPGA technologies in high-energy nuclear and particle experiments real-time data processing pipelines. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.04845v1-abstract-full').style.display = 'none'; document.getElementById('2501.04845v1-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, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </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">proceedings for 42nd International Conference on High Energy Physics (ICHEP2024), 18-24 July 2024, Prague, Czech Republic</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LA-UR-24-30394 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.04760">arXiv:2501.04760</a> <span> [<a href="https://arxiv.org/pdf/2501.04760">pdf</a>, <a href="https://arxiv.org/format/2501.04760">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 decay $D^{+}\to e^{+}谓_{e}$ </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+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. (646 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="2501.04760v1-abstract-short" style="display: inline;"> We search for the leptonic decay $D^+\to e^+谓_{e}$ using an $e^+e^-$ collision data sample with an integrated luminosity of 20.3~fb$^{-1}$ collected with the BESIII detector at the center-of-mass energy of 3.773~GeV. No significant signal is observed and an upper limit on the branching fraction of $D^+\to e^+谓_{e}$ is set as $9.7 \times 10^{-7}$, at the 90\% confidence level. Our upper limit is an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.04760v1-abstract-full').style.display = 'inline'; document.getElementById('2501.04760v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.04760v1-abstract-full" style="display: none;"> We search for the leptonic decay $D^+\to e^+谓_{e}$ using an $e^+e^-$ collision data sample with an integrated luminosity of 20.3~fb$^{-1}$ collected with the BESIII detector at the center-of-mass energy of 3.773~GeV. No significant signal is observed and an upper limit on the branching fraction of $D^+\to e^+谓_{e}$ is set as $9.7 \times 10^{-7}$, at the 90\% confidence level. Our upper limit is an order of magnitude smaller than the previous limit for this decay mode. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.04760v1-abstract-full').style.display = 'none'; document.getElementById('2501.04760v1-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, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.04451">arXiv:2501.04451</a> <span> [<a href="https://arxiv.org/pdf/2501.04451">pdf</a>, <a href="https://arxiv.org/format/2501.04451">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 $W$-annihilation process $D_s^+ \to 蠅蟻^+$ and measurement of $D_s^+ \to 蠁蟻^+$ in $D^+_s\to 蟺^+蟺^+蟺^-蟺^0蟺^0$ 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+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. (642 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="2501.04451v1-abstract-short" style="display: inline;"> We present the first amplitude analysis and branching fraction measurement of the decay $D^+_s\to 蟺^+蟺^+蟺^-蟺^0蟺^0$, using $e^+e^-$ collision data collected with the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV corresponding to an integrated luminosity of 7.33 fb$^{-1}$, and report the first observation of the pure $W$-annihilation decay $D_s^+ \to 蠅蟻^+$ with a branching f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.04451v1-abstract-full').style.display = 'inline'; document.getElementById('2501.04451v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.04451v1-abstract-full" style="display: none;"> We present the first amplitude analysis and branching fraction measurement of the decay $D^+_s\to 蟺^+蟺^+蟺^-蟺^0蟺^0$, using $e^+e^-$ collision data collected with the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV corresponding to an integrated luminosity of 7.33 fb$^{-1}$, and report the first observation of the pure $W$-annihilation decay $D_s^+ \to 蠅蟻^+$ with a branching fraction of $(0.99\pm0.08_{\rm stat}\pm0.07_{\rm syst})\%$. In comparison to the low significance of the $\mathcal{D}$ wave in the decay $D_s^+ \to 蠁蟻^+$, the dominance of the $\mathcal{D}$ wave over the $\mathcal{S}$ and $\mathcal{P}$ waves, with a fraction of $(51.85\pm7.28_{\rm stat}\pm7.90_{\rm syst})\%$ observed in the decay, provides crucial information for the``polarization puzzle", as well as for the understanding of charm meson decays. The branching fraction of $D^+_s\to 蟺^+蟺^+蟺^-蟺^0蟺^0$ is measured to be $(4.41\pm0.15_{\rm stat}\pm0.13_{\rm syst})\%$. Moreover, the branching fraction of $D_s^+ \to 蠁蟻^+$ is measured to be $(3.98\pm0.33_{\rm stat}\pm0.21_{\rm syst})\%$, and the $R_蠁= {\mathcal{B}(蠁\to蟺^+蟺^-蟺^0)}/{\mathcal{B}(蠁\to K^+K^-)}$ is determined to be $(0.222\pm0.019_{\rm stat}\pm0.016_{\rm syst}$), which is consistent with the previous measurement based on charm meson decays, but deviates from the results from $e^+e^-$ annihilation and $K$-$N$ scattering experiments by more than 3$蟽$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.04451v1-abstract-full').style.display = 'none'; document.getElementById('2501.04451v1-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, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.04344">arXiv:2501.04344</a> <span> [<a href="https://arxiv.org/pdf/2501.04344">pdf</a>, <a href="https://arxiv.org/format/2501.04344">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 electromagnetic Dalitz decay $J/蠄\to e^+e^- 蟺^0$ </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+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. (639 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="2501.04344v1-abstract-short" style="display: inline;"> We study the electromagnetic Dalitz decay $J/蠄\to e^+e^- 蟺^0$ using $(10087 \pm 44) \times 10^6$ $J/蠄$ events collected by the \bes detector. The di-electron-invariant-mass dependent transition form factor of this decay is explored for the first time. A significant resonant structure corresponding to the $蟻/蠅$ resonance is observed, which cannot be described by existing theoretical models, due to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.04344v1-abstract-full').style.display = 'inline'; document.getElementById('2501.04344v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.04344v1-abstract-full" style="display: none;"> We study the electromagnetic Dalitz decay $J/蠄\to e^+e^- 蟺^0$ using $(10087 \pm 44) \times 10^6$ $J/蠄$ events collected by the \bes detector. The di-electron-invariant-mass dependent transition form factor of this decay is explored for the first time. A significant resonant structure corresponding to the $蟻/蠅$ resonance is observed, which cannot be described by existing theoretical models, due to contributions from the isospin-conserving $J/蠄\to 蟻蟺^0$ and isospin-volating $J/蠄\to 蠅蟺^0$ decays. The observed $蟻$--$蠅$ interference is consistent with that of the pion form factor but features a relatively narrow $蟻$ peak. By taking into account the contribution of this resonant structure, the branching fraction of $J/蠄\to e^+e^- 蟺^0$ in the full $e^+e^-$ invariant mass spectrum range is also measured for the first time to be $(8.06 \pm 0.31 (\rm{stat}) \pm 0.38 (\rm{syst}))\times 10^{-7}$, which is two times larger than the prediction of the Vector Meson Dominance model due to the observed resonant contribution of $蟻/蠅$ resonances. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.04344v1-abstract-full').style.display = 'none'; document.getElementById('2501.04344v1-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, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </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, 4 figures, Submitted to Phys. Rev. Lett</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BAM-325 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.02594">arXiv:2501.02594</a> <span> [<a href="https://arxiv.org/pdf/2501.02594">pdf</a>, <a href="https://arxiv.org/format/2501.02594">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 $蠄(3686) \to K^{-}螞(1520)\bar螢^{+} + c.c.$ </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=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+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. (642 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="2501.02594v1-abstract-short" style="display: inline;"> Based on $(2712.4 \pm 14.3)\times 10^6$ $蠄(3686)$ events collected at the BESIII detector operating at the BEPCII collider, we present the first observation of the decay $蠄(3686) \to K^{-}螞(1520)\bar螢^{+} + c.c.$. The product branching fraction ${\cal B}[蠄(3686) \to K^{-}螞(1520)\bar螢^{+} + c.c.] \times {\cal B}[螞(1520) \to pK^{-}]$ is measured to be $(9.5 \pm 0.8 \pm 1.1) \times 10^{-7}$, where th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.02594v1-abstract-full').style.display = 'inline'; document.getElementById('2501.02594v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.02594v1-abstract-full" style="display: none;"> Based on $(2712.4 \pm 14.3)\times 10^6$ $蠄(3686)$ events collected at the BESIII detector operating at the BEPCII collider, we present the first observation of the decay $蠄(3686) \to K^{-}螞(1520)\bar螢^{+} + c.c.$. The product branching fraction ${\cal B}[蠄(3686) \to K^{-}螞(1520)\bar螢^{+} + c.c.] \times {\cal B}[螞(1520) \to pK^{-}]$ is measured to be $(9.5 \pm 0.8 \pm 1.1) \times 10^{-7}$, where the first uncertainty is statistical and the second systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.02594v1-abstract-full').style.display = 'none'; document.getElementById('2501.02594v1-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 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.01661">arXiv:2501.01661</a> <span> [<a href="https://arxiv.org/pdf/2501.01661">pdf</a>, <a href="https://arxiv.org/ps/2501.01661">ps</a>, <a href="https://arxiv.org/format/2501.01661">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 $畏_c(2S)\to p\bar{p}K^+K^-$ and measurement of $蠂_{cJ}\to p\bar{p}K^+K^-$ in $蠄(3686)$ radiative decays </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=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=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>, <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. (639 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="2501.01661v1-abstract-short" style="display: inline;"> A search for $畏_c(2S)\to p\bar{p}K^+K^-$, together with measurement of branching fractions of $蠂_{cJ(J=0,1,2)}\to p\bar{p}K^+K^-$ in the $蠄(3686) \to 纬畏_c(2S)$ and the $蠄(3686) \to 纬蠂_{cJ}$ radiative decays, is performed with $(2712.4\pm14.3)\times 10^6$ $蠄(3686)$ events collected with the BESIII detector at the BEPCII collider. An evidence for $畏_c(2S)\to p\bar{p}K^+K^-$ is found, with a signific… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.01661v1-abstract-full').style.display = 'inline'; document.getElementById('2501.01661v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.01661v1-abstract-full" style="display: none;"> A search for $畏_c(2S)\to p\bar{p}K^+K^-$, together with measurement of branching fractions of $蠂_{cJ(J=0,1,2)}\to p\bar{p}K^+K^-$ in the $蠄(3686) \to 纬畏_c(2S)$ and the $蠄(3686) \to 纬蠂_{cJ}$ radiative decays, is performed with $(2712.4\pm14.3)\times 10^6$ $蠄(3686)$ events collected with the BESIII detector at the BEPCII collider. An evidence for $畏_c(2S)\to p\bar{p}K^+K^-$ is found, with a significance of $3.3蟽$. The product branching fraction of $\mathcal{B}[蠄(3686)\to纬畏_c(2S)]\cdot\mathcal{B}[畏_c(2S)\to p\bar{p}K^+K^-]$ is determined to be $(1.98\mkern 2mu\pm\mkern 2mu0.41_{\text{stat.}}\mkern 2mu\pm\mkern 2mu0.99_{\text{syst.}})\times 10^{-7}$. The product branching fractions of $\mathcal{B}[蠄(3686)\to纬蠂_{cJ}]\cdot\mathcal{B}[蠂_{cJ}\to p\bar{p}K^+K^-]$ are measured to be $(2.49\mkern 2mu\pm\mkern 2mu 0.03_{\text{stat.}}\mkern 2mu\pm\mkern 2mu 0.15_{\text{syst.}})\times 10^{-5}$, $(1.83\mkern 2mu \pm\mkern 2mu 0.02_{\text{stat.}}\mkern 2mu \pm\mkern 2mu 0.11_{\text{syst.}})\times 10^{-5}$, and $(2.43\mkern 2mu\pm\mkern 2mu 0.02_{\text{stat.}}\mkern 2mu\pm\mkern 2mu 0.15_{\text{syst.}})\times 10^{-5}$, for $J=0,\ 1$, and 2, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.01661v1-abstract-full').style.display = 'none'; document.getElementById('2501.01661v1-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 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </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> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.00746">arXiv:2501.00746</a> <span> [<a href="https://arxiv.org/pdf/2501.00746">pdf</a>, <a href="https://arxiv.org/format/2501.00746">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Comprehensive Measurement of the Reactor Antineutrino Spectrum and Flux at Daya Bay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=An%2C+F+P">F. P. An</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+W+D">W. D. Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Balantekin%2C+A+B">A. B. Balantekin</a>, <a href="/search/hep-ex?searchtype=author&query=Bishai%2C+M">M. Bishai</a>, <a href="/search/hep-ex?searchtype=author&query=Blyth%2C+S">S. Blyth</a>, <a href="/search/hep-ex?searchtype=author&query=Cao%2C+G+F">G. F. Cao</a>, <a href="/search/hep-ex?searchtype=author&query=Cao%2C+J">J. Cao</a>, <a href="/search/hep-ex?searchtype=author&query=Chang%2C+J+F">J. F. Chang</a>, <a href="/search/hep-ex?searchtype=author&query=Chang%2C+Y">Y. Chang</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+H+S">H. S. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+H+Y">H. Y. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+S+M">S. M. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+Y">Y. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+Y+X">Y. X. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+Z+Y">Z. Y. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Cheng%2C+J">J. Cheng</a>, <a href="/search/hep-ex?searchtype=author&query=Cheng%2C+J">J. Cheng</a>, <a href="/search/hep-ex?searchtype=author&query=Cheng%2C+Y+-">Y. -C. Cheng</a>, <a href="/search/hep-ex?searchtype=author&query=Cheng%2C+Z+K">Z. K. Cheng</a>, <a href="/search/hep-ex?searchtype=author&query=Cherwinka%2C+J+J">J. J. Cherwinka</a>, <a href="/search/hep-ex?searchtype=author&query=Chu%2C+M+C">M. C. Chu</a>, <a href="/search/hep-ex?searchtype=author&query=Cummings%2C+J+P">J. P. Cummings</a>, <a href="/search/hep-ex?searchtype=author&query=Dalager%2C+O">O. Dalager</a>, <a href="/search/hep-ex?searchtype=author&query=Deng%2C+F+S">F. S. Deng</a>, <a href="/search/hep-ex?searchtype=author&query=Ding%2C+X+Y">X. Y. Ding</a> , et al. (177 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="2501.00746v1-abstract-short" style="display: inline;"> This Letter reports the precise measurement of reactor antineutrino spectrum and flux based on the full data set of 4.7 million inverse-beta-decay (IBD) candidates collected at Daya Bay near detectors. Expressed in terms of the IBD yield per fission, the antineutrino spectra from all reactor fissile isotopes and the specific $\mathrm{^{235}U}$ and $\mathrm{^{239}Pu}$ isotopes are measured with 1.3… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.00746v1-abstract-full').style.display = 'inline'; document.getElementById('2501.00746v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.00746v1-abstract-full" style="display: none;"> This Letter reports the precise measurement of reactor antineutrino spectrum and flux based on the full data set of 4.7 million inverse-beta-decay (IBD) candidates collected at Daya Bay near detectors. Expressed in terms of the IBD yield per fission, the antineutrino spectra from all reactor fissile isotopes and the specific $\mathrm{^{235}U}$ and $\mathrm{^{239}Pu}$ isotopes are measured with 1.3$\%$, 3$\%$ and 8$\%$ uncertainties respectively near the 3 MeV spectrum peak in reconstructed energy, reaching the best precision in the world. The total antineutrino flux and isotopic $\mathrm{^{235}U}$ and $\mathrm{^{239}Pu}$ fluxes are precisely measured to be $5.84\pm0.07$, $6.16\pm0.12$ and $4.16\pm0.21$ in units of $10^{-43} \mathrm{cm^2/fission}$. These measurements are compared with the Huber-Mueller (HM) model, the reevaluated conversion model based on the Kurchatov Institute (KI) measurement and the latest Summation Model (SM2023). The Daya Bay flux shows good consistency with KI and SM2023 models, but disagrees with HM model. The Daya Bay spectrum, however, disagrees with all model predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.00746v1-abstract-full').style.display = 'none'; document.getElementById('2501.00746v1-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, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.20305">arXiv:2412.20305</a> <span> [<a href="https://arxiv.org/pdf/2412.20305">pdf</a>, <a href="https://arxiv.org/ps/2412.20305">ps</a>, <a href="https://arxiv.org/format/2412.20305">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 Born cross section of $e^+e^-\to危^0\bar危^0$ at $\sqrt{s} = 3.50-4.95$ 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=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=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>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (649 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="2412.20305v1-abstract-short" style="display: inline;"> Using $e^+e^-$ collision data collected with the BESIII detector at the BEPCII collider at thirty-two center-of-mass energies from 3.50 to 4.95 GeV, corresponding to an integrated luminosity of 25 $\rm{fb^{-1}}$, we measure the Born cross section of the $e^+e^-\to危^0\bar危^0$ reaction and the effective form factor. No significant charmonium(-like) state, i.e., $蠄(3770)$, $蠄(4040)$, $蠄(4160)$,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.20305v1-abstract-full').style.display = 'inline'; document.getElementById('2412.20305v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.20305v1-abstract-full" style="display: none;"> Using $e^+e^-$ collision data collected with the BESIII detector at the BEPCII collider at thirty-two center-of-mass energies from 3.50 to 4.95 GeV, corresponding to an integrated luminosity of 25 $\rm{fb^{-1}}$, we measure the Born cross section of the $e^+e^-\to危^0\bar危^0$ reaction and the effective form factor. No significant charmonium(-like) state, i.e., $蠄(3770)$, $蠄(4040)$, $蠄(4160)$, $蠄(4230)$, $蠄(4360)$, $蠄(4415)$, or $蠄(4660)$, decaying into the $危^0\bar危^0$ final state is observed by fitting the $e^+e^- \to 危^0\bar危^0$ dressed cross section. The upper limits for the product of the branching fraction and the electronic partial width at the 90% confidence level are provided for each assumed charmonium(-like) state. In addition, the ratios of the Born cross section and the effective form factor between the $e^+e^-\to危^0\bar危^0$ and the $e^+e^-\to危^+\bar危^-$ reactions are provided, which can be used to validate the prediction of the vector meson dominance model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.20305v1-abstract-full').style.display = 'none'; document.getElementById('2412.20305v1-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.19702">arXiv:2412.19702</a> <span> [<a href="https://arxiv.org/pdf/2412.19702">pdf</a>, <a href="https://arxiv.org/ps/2412.19702">ps</a>, <a href="https://arxiv.org/format/2412.19702">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 double Dalitz decays $畏/畏' \to e^+e^-渭^+渭^-$ and $畏' \to 渭^+渭^-渭^+渭^-$ </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=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=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>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (648 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="2412.19702v1-abstract-short" style="display: inline;"> Using a data sample of $(10087 \pm 44) \times {10^{6}}$ $J/蠄$ events collected with the BESIII detector, we search for the decays $畏/畏'\to e^+e^-渭^+渭^-$ and $畏' \to 渭^+渭^-渭^+渭^-$ via the radiative decays $J/蠄\to纬畏$/$纬畏'$. No excess of events over expected background is observed for any of the decays of interest. At 90% confidence level, we report the first upper limits on the branching fractions o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.19702v1-abstract-full').style.display = 'inline'; document.getElementById('2412.19702v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.19702v1-abstract-full" style="display: none;"> Using a data sample of $(10087 \pm 44) \times {10^{6}}$ $J/蠄$ events collected with the BESIII detector, we search for the decays $畏/畏'\to e^+e^-渭^+渭^-$ and $畏' \to 渭^+渭^-渭^+渭^-$ via the radiative decays $J/蠄\to纬畏$/$纬畏'$. No excess of events over expected background is observed for any of the decays of interest. At 90% confidence level, we report the first upper limits on the branching fractions of $畏' \to e^{+}e^{-}渭^{+}渭^{-}$ and $畏' \to 渭^{+}渭^{-}渭^{+}渭^{-}$ to be $ 1.75 \times {10^{-6}}$ and $5.28 \times {10^{-7}}$, respectively. In addition, we set an upper limit on the branching fraction of $畏\to e^{+}e^{-}渭^{+}渭^{-}$ to be $6.88 \times {10^{-6}}$, which improves the previous result by about two orders of magnitude. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.19702v1-abstract-full').style.display = 'none'; document.getElementById('2412.19702v1-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.13832">arXiv:2412.13832</a> <span> [<a href="https://arxiv.org/pdf/2412.13832">pdf</a>, <a href="https://arxiv.org/format/2412.13832">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 Branching Fraction for the Decay $蠂_{cJ}\to p\bar{p}畏蟺^{0}$ </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+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. (642 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="2412.13832v2-abstract-short" style="display: inline;"> Using $(2712.4\pm 14.3)\times10^6 蠄(3686)$ events collected by the BESIII detector operating at the BEPCII collider, we present the first observations of the decays $蠂_{cJ}(J=0,1,2)\to p\bar{p}畏蟺^{0}$. Their decay branching fractions are determined to be ${\cal B}(蠂_{c0}\to p\bar{p}畏蟺^{0})=({2.41 \pm 0.07 \pm 0.19}) \times 10^{-4}$,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.13832v2-abstract-full').style.display = 'inline'; document.getElementById('2412.13832v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.13832v2-abstract-full" style="display: none;"> Using $(2712.4\pm 14.3)\times10^6 蠄(3686)$ events collected by the BESIII detector operating at the BEPCII collider, we present the first observations of the decays $蠂_{cJ}(J=0,1,2)\to p\bar{p}畏蟺^{0}$. Their decay branching fractions are determined to be ${\cal B}(蠂_{c0}\to p\bar{p}畏蟺^{0})=({2.41 \pm 0.07 \pm 0.19}) \times 10^{-4}$, ${\cal B}(蠂_{c1}\to p\bar{p}畏蟺^{0})=({1.95 \pm 0.05 \pm 0.12}) \times 10^{-4}$, and ${\cal B}(蠂_{c2}\to p\bar{p}畏蟺^{0})=({1.31 \pm 0.05 \pm 0.08}) \times 10^{-4}$, where the first uncertainties are statistical and the second systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.13832v2-abstract-full').style.display = 'none'; document.getElementById('2412.13832v2-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.12998">arXiv:2412.12998</a> <span> [<a href="https://arxiv.org/pdf/2412.12998">pdf</a>, <a href="https://arxiv.org/format/2412.12998">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 charmonium decay $畏_c\to纬纬$ </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+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=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>, <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. (658 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="2412.12998v1-abstract-short" style="display: inline;"> Using $(2712.4\pm14.3)\times10^{6}$ $蠄(3686)$ events collected with the BESIII detector at the BEPCII collider, the decay $畏_c\to纬纬$ in $J/蠄\to纬畏_c$ is observed for the first time. We determine the product branching fraction $\mathcal{B}(J/蠄\to纬畏_c)\times\mathcal{B}(畏_c\to纬纬)=(5.23\pm0.26_{\rm{stat.}}\pm0.30_{\rm{syst.}})\times10^{-6}$. This result is well consistent with the LQCD calculation… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.12998v1-abstract-full').style.display = 'inline'; document.getElementById('2412.12998v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.12998v1-abstract-full" style="display: none;"> Using $(2712.4\pm14.3)\times10^{6}$ $蠄(3686)$ events collected with the BESIII detector at the BEPCII collider, the decay $畏_c\to纬纬$ in $J/蠄\to纬畏_c$ is observed for the first time. We determine the product branching fraction $\mathcal{B}(J/蠄\to纬畏_c)\times\mathcal{B}(畏_c\to纬纬)=(5.23\pm0.26_{\rm{stat.}}\pm0.30_{\rm{syst.}})\times10^{-6}$. This result is well consistent with the LQCD calculation $(5.34\pm0.16)\times10^{-6}$ from HPQCD in 2023. By using the world-average values of $\mathcal{B}(J/蠄\to纬畏_c)$ and the total decay width of $畏_c$, the partial decay width $螕(畏_c\to纬纬)$ is determined to be $(11.30\pm0.56_{\rm{stat.}}\pm0.66_{\rm{syst.}}\pm1.14_{\rm{ref.}})~\rm{keV}$, which deviates from the corresponding world-average value by $3.4蟽$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.12998v1-abstract-full').style.display = 'none'; document.getElementById('2412.12998v1-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">10 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/2412.11096">arXiv:2412.11096</a> <span> [<a href="https://arxiv.org/pdf/2412.11096">pdf</a>, <a href="https://arxiv.org/format/2412.11096">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 - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Reevaluating the $蠄(4160)$ Resonance Parameter Using $B^+\to K^+渭^+渭^-$ Data in the Context of Unquenched Charmonium Spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Peng%2C+T">Tian-Cai Peng</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Z">Zi-Yue Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Wang%2C+J">Jun-Zhang Wang</a>, <a href="/search/hep-ex?searchtype=author&query=Liu%2C+X">Xiang Liu</a> </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="2412.11096v1-abstract-short" style="display: inline;"> A puzzling phenomenon, where the measured mass of the $蠄(4160)$ is pushed higher, presents a challenge to current theoretical models of hadron spectroscopy. This study suggests that the issue arises from analyses based on the outdated quenched charmonium spectrum. In the past two decades, the discovery of new hadronic states has emphasized the importance of the unquenched effect. Under the unquenc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.11096v1-abstract-full').style.display = 'inline'; document.getElementById('2412.11096v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.11096v1-abstract-full" style="display: none;"> A puzzling phenomenon, where the measured mass of the $蠄(4160)$ is pushed higher, presents a challenge to current theoretical models of hadron spectroscopy. This study suggests that the issue arises from analyses based on the outdated quenched charmonium spectrum. In the past two decades, the discovery of new hadronic states has emphasized the importance of the unquenched effect. Under the unquenched picture, six vector charmonium states-$蠄(4040)$, $蠄(4160)$, $蠄(4220)$, $蠄(4380)$, $蠄(4415)$, and $蠄(4500)$-are identified in the $4 \sim 4.5$ GeV range, contrasting with the three states predicted in the quenched model. We reevaluate the resonance parameters of the $蠄(4160)$ using the di-muon invariant mass spectrum of $B^+ \to K^+ 渭^+ 渭^-$ and unquenched charmonium spectroscopy. Our analysis finds the $蠄(4160)$ mass at $4145.76 \pm 4.48$ MeV, indicating previous overestimations. This conclusion is supported by analyzing $e^+e^- \to D_s \bar{D}_s^*$. Our findings have significant implications for both hadron spectroscopy and search for new physics signals by $R_K$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.11096v1-abstract-full').style.display = 'none'; document.getElementById('2412.11096v1-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">4 pages, 3 figures and 3 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.11040">arXiv:2412.11040</a> <span> [<a href="https://arxiv.org/pdf/2412.11040">pdf</a>, <a href="https://arxiv.org/format/2412.11040">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"> Amplitude analysis and branching fraction measurement of the Cabibbo-favored decay $D^+ \to K^-蟺^+蟺^+蟺^0$ </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=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>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (651 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="2412.11040v1-abstract-short" style="display: inline;"> An amplitude analysis of the Cabibbo-favored decay $D^+ \to K^-蟺^+蟺^+蟺^0$ is performed, using 7.93 $\rm{fb}^{-1}$ of $e^+e^-$ collision data collected with the BESIII detector at the center-of-mass energy of 3.773 GeV. The branching fractions of the intermediate processes are measured, with the dominant contribution $D^+ \to \bar{K}^{*}(892)^0蟻(770)^+$ observed to have a branching fraction of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.11040v1-abstract-full').style.display = 'inline'; document.getElementById('2412.11040v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.11040v1-abstract-full" style="display: none;"> An amplitude analysis of the Cabibbo-favored decay $D^+ \to K^-蟺^+蟺^+蟺^0$ is performed, using 7.93 $\rm{fb}^{-1}$ of $e^+e^-$ collision data collected with the BESIII detector at the center-of-mass energy of 3.773 GeV. The branching fractions of the intermediate processes are measured, with the dominant contribution $D^+ \to \bar{K}^{*}(892)^0蟻(770)^+$ observed to have a branching fraction of $(4.15\pm0.07_{\rm stat.}\pm0.17_{\rm syst.})\%$. With the detection efficiency derived from the amplitude analysis, the absolute branching fraction of $D^+ \to K^-蟺^+蟺^+蟺^0$ is measured to be $(6.06\pm0.04_{\rm stat.}\pm0.07_{\rm syst.})\%$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.11040v1-abstract-full').style.display = 'none'; document.getElementById('2412.11040v1-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.10803">arXiv:2412.10803</a> <span> [<a href="https://arxiv.org/pdf/2412.10803">pdf</a>, <a href="https://arxiv.org/format/2412.10803">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 semileptonic decay $D^0\rightarrow \bar{K}^0蟺^-e^+谓_e$ </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=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=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>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (650 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="2412.10803v1-abstract-short" style="display: inline;"> We report an improved study of the semileptonic decay $D^0 \rightarrow \bar{K}^0蟺^-e^+谓_{e}$ based on a sample of $7.9~\mathrm{fb}^{-1}$ of $e^+e^-$ annihilation data collected at a center-of-mass energy of 3.773~GeV with the BESIII detector at the BEPCII collider. The branching fraction of this decay is measured to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.10803v1-abstract-full').style.display = 'inline'; document.getElementById('2412.10803v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.10803v1-abstract-full" style="display: none;"> We report an improved study of the semileptonic decay $D^0 \rightarrow \bar{K}^0蟺^-e^+谓_{e}$ based on a sample of $7.9~\mathrm{fb}^{-1}$ of $e^+e^-$ annihilation data collected at a center-of-mass energy of 3.773~GeV with the BESIII detector at the BEPCII collider. The branching fraction of this decay is measured to be $\mathcal{B}(D^0\rightarrow \bar{K}^0蟺^-e^+谓_{e}) = (1.444 \pm 0.022_{\rm stat} \pm 0.024_{\rm syst})\%$, which is the most precise to date, where the first uncertainty is statistical and the second is systematic. Based on investigation of the decay dynamics, we find that the decay is dominated by the $K^{*}(892)^-$ component and present an improved measurement of its branching fraction to be $\mathcal{B}(D^0\rightarrow K^{*}(892)^-e^+谓_e) = (2.039 \pm 0.032_{\rm stat} \pm 0.034_{\rm syst})\%$. We also determine the ratios of the hadronic form factors for the $K^{*}(892)^-e^+谓_e$ decay to be $r_{V} = V(0)/A_1(0) = 1.48 \pm 0.05_{\rm stat} \pm 0.02_{\rm syst}$ and $r_{2} = A_2(0)/A_1(0) = 0.70 \pm 0.04_{\rm stat} \pm 0.02_{\rm syst}$, where $V(0)$ is the vector form factor and $A_{1,2}(0)$ are the axial form factors. In addition, the $\bar{K}^0蟺^-$ $\mathcal{S}$-wave component is found to account for $(5.87 \pm 0.32_{\rm stat} \pm 0.16_{\rm syst})\%$ of the total decay rate, corresponding to a branching fraction of $\mathcal{B}[D^0\rightarrow (\bar{K}^0蟺^-)_{S-{\rm wave}}e^+谓_e] = (0.085 \pm 0.005_{\rm stat} \pm 0.003_{\rm syst})\%$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.10803v1-abstract-full').style.display = 'none'; document.getElementById('2412.10803v1-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">20 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/2412.09408">arXiv:2412.09408</a> <span> [<a href="https://arxiv.org/pdf/2412.09408">pdf</a>, <a href="https://arxiv.org/format/2412.09408">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 - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Non-$D\bar{D}$ Decays into Light Meson Pairs of the $D$-Wave Charmonium $蠄_3(3842)$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Bai%2C+Z">Zi-Yue Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Lai%2C+B">Bao-Jun Lai</a>, <a href="/search/hep-ex?searchtype=author&query=Zou%2C+Q">Qin-Song Zou</a>, <a href="/search/hep-ex?searchtype=author&query=Liu%2C+X">Xiang Liu</a> </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="2412.09408v2-abstract-short" style="display: inline;"> As a $D$-wave partner of $蠄(3770)$ identified by the LHCb Collaboration, $蠄_3(3842)$ lies between the $D\bar{D}$ and $D\bar{D^*}$ thresholds. Its non-$D\bar{D}$ decay channels have attracted considerable interest. In this study, we investigate these allowed non-$D\bar{D}$ decays of $蠄_3(3842)$ into $PP$, $PV$, and $VV$ final states using the hadronic loop mechanism, where $P$ and $V$ represent lig… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.09408v2-abstract-full').style.display = 'inline'; document.getElementById('2412.09408v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.09408v2-abstract-full" style="display: none;"> As a $D$-wave partner of $蠄(3770)$ identified by the LHCb Collaboration, $蠄_3(3842)$ lies between the $D\bar{D}$ and $D\bar{D^*}$ thresholds. Its non-$D\bar{D}$ decay channels have attracted considerable interest. In this study, we investigate these allowed non-$D\bar{D}$ decays of $蠄_3(3842)$ into $PP$, $PV$, and $VV$ final states using the hadronic loop mechanism, where $P$ and $V$ represent light pseudoscalar and vector mesons, respectively. Our results suggest that these non-$D\bar{D}$ decays of $蠄_3(3842)$ can be significant, with contributions primarily driven by hadronic loops. Notably, the $蟻蟺$ channel stands out as the main non-$D\bar{D}$ decay mode, while non-$D\bar{D}$ decay channels involving strange mesons are also sizable. These predictions could be tested in future experiments such as those at LHCb and BESIII. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.09408v2-abstract-full').style.display = 'none'; document.getElementById('2412.09408v2-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> 13 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">7 pages, 4 figures, and 2 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.06409">arXiv:2412.06409</a> <span> [<a href="https://arxiv.org/pdf/2412.06409">pdf</a>, <a href="https://arxiv.org/ps/2412.06409">ps</a>, <a href="https://arxiv.org/format/2412.06409">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 蠄(3686) \to 危^{0}\bar危^{0}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+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. (644 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="2412.06409v1-abstract-short" style="display: inline;"> Using $(27.12\pm 0.14)\times 10^{8}$ $蠄(3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decay $蠄(3686)\to危^{0}\bar危^{0}蠁$ is observed for the first time with a statistical significance of 7.6$蟽$. Its branching fraction is measured to be $(2.64 \pm 0.32_{\textrm{stat}} \pm 0.12_{\textrm{sys}}) \times 10^{-6}$, where the first uncertainty is statistical and the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.06409v1-abstract-full').style.display = 'inline'; document.getElementById('2412.06409v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.06409v1-abstract-full" style="display: none;"> Using $(27.12\pm 0.14)\times 10^{8}$ $蠄(3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decay $蠄(3686)\to危^{0}\bar危^{0}蠁$ is observed for the first time with a statistical significance of 7.6$蟽$. Its branching fraction is measured to be $(2.64 \pm 0.32_{\textrm{stat}} \pm 0.12_{\textrm{sys}}) \times 10^{-6}$, where the first uncertainty is statistical and the second is systematic. In addition, we search for potential intermediate states in the $危^{0}蠁$($\bar危^{0}蠁$) invariant mass distribution and a possible threshold enhancement in the $危^{0}\bar危^{0}$ system, but no conclusive evidence of is observed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.06409v1-abstract-full').style.display = 'none'; document.getElementById('2412.06409v1-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> 9 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.06400">arXiv:2412.06400</a> <span> [<a href="https://arxiv.org/pdf/2412.06400">pdf</a>, <a href="https://arxiv.org/format/2412.06400">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 - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Discovery potential of charmonium $2P$ states through the $e^+e^- \to 纬D\bar{D}$ processes </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Gao%2C+T">Tian-Le Gao</a>, <a href="/search/hep-ex?searchtype=author&query=Qian%2C+R">Ri-Qing Qian</a>, <a href="/search/hep-ex?searchtype=author&query=Liu%2C+X">Xiang Liu</a> </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="2412.06400v1-abstract-short" style="display: inline;"> In this work, we investigate the production of charmonium $2P$ states via the $e^+e^-\to 纬D\bar{D}$ process at $\sqrt{s} = 4.23$ GeV. Using the measured cross-section data for $e^+e^-\to 纬X(3872)$ as a reference, we calculate the cross sections for $e^+e^-\to 纬蠂_{c0}(2P)$ and $e^+e^-\to 纬蠂_{c2}(2P)$. Since the $蠂_{c0}(2P)$ and $蠂_{c2}(2P)$ states predominantly decay into $D\bar{D}$ final states, w… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.06400v1-abstract-full').style.display = 'inline'; document.getElementById('2412.06400v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.06400v1-abstract-full" style="display: none;"> In this work, we investigate the production of charmonium $2P$ states via the $e^+e^-\to 纬D\bar{D}$ process at $\sqrt{s} = 4.23$ GeV. Using the measured cross-section data for $e^+e^-\to 纬X(3872)$ as a reference, we calculate the cross sections for $e^+e^-\to 纬蠂_{c0}(2P)$ and $e^+e^-\to 纬蠂_{c2}(2P)$. Since the $蠂_{c0}(2P)$ and $蠂_{c2}(2P)$ states predominantly decay into $D\bar{D}$ final states, we also predict the corresponding $D\bar{D}$ invariant mass spectrum for the $e^+e^-\to 纬D\bar{D}$ process. Our results indicate that $e^+e^-\to 纬D\bar{D}$ is an ideal process for identifying the $蠂_{c0}(2P)$ and $蠂_{c2}(2P)$ states, analogous to the $纬纬\to D\bar{D}$ and $B^+\to D^+D^-K^+$ processes. This study highlights the discovery potential of charmonium $2P$ states at BESIII and Belle II. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.06400v1-abstract-full').style.display = 'none'; document.getElementById('2412.06400v1-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> 9 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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, 3 figures and 2 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2412.06247">arXiv:2412.06247</a> <span> [<a href="https://arxiv.org/pdf/2412.06247">pdf</a>, <a href="https://arxiv.org/ps/2412.06247">ps</a>, <a href="https://arxiv.org/format/2412.06247">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 analyses of $蠄(3686)\to p\bar{p}蟺^0$ and $蠄(3686)\to p\bar{p}畏$ </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+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. (644 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="2412.06247v2-abstract-short" style="display: inline;"> Using a sample of $(2712\pm14)\times10^6$ $蠄(3686)$ events collected with the BESIII detector, we perform partial wave analyses of the decays $蠄(3686)\to p\bar{p}蟺^0$ and $蠄(3686)\to p\bar{p}畏$. The branching fractions of $蠄(3686)\to p\bar{p}蟺^0$ and $蠄(3686)\to p\bar{p}畏$ are determined to be $(133.9\pm11.2\pm2.3)\times10^{-6}$ or $(183.7\pm13.7\pm3.2)\times10^{-6}$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.06247v2-abstract-full').style.display = 'inline'; document.getElementById('2412.06247v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2412.06247v2-abstract-full" style="display: none;"> Using a sample of $(2712\pm14)\times10^6$ $蠄(3686)$ events collected with the BESIII detector, we perform partial wave analyses of the decays $蠄(3686)\to p\bar{p}蟺^0$ and $蠄(3686)\to p\bar{p}畏$. The branching fractions of $蠄(3686)\to p\bar{p}蟺^0$ and $蠄(3686)\to p\bar{p}畏$ are determined to be $(133.9\pm11.2\pm2.3)\times10^{-6}$ or $(183.7\pm13.7\pm3.2)\times10^{-6}$ and $(61.5\pm6.5\pm1.1)\times10^{-6}$ or $(84.4\pm6.9\pm1.4)\times10^{-6}$, respectively, where the two solutions are caused by an ambiguous phase angle between resonant and continuum processes. Several well-established $N^*$ states are observed in the $p蟺^0$ and $p畏$ systems, and the corresponding branching fractions are measured. The ratio of decay widths $螕_{N(1535)\to N畏}/螕_{N(1535)\to N蟺}$ is determined to be $0.99\pm0.05\pm0.19$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2412.06247v2-abstract-full').style.display = 'none'; document.getElementById('2412.06247v2-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">19 pages, 7 figures, Accepted by 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/2411.19642">arXiv:2411.19642</a> <span> [<a href="https://arxiv.org/pdf/2411.19642">pdf</a>, <a href="https://arxiv.org/ps/2411.19642">ps</a>, <a href="https://arxiv.org/format/2411.19642">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 Inclusive Cross Sections of Prompt $J/蠄$ and $蠄(3686)$ Production in $e^{+}e^{-}$ Annihilation from $\sqrt{s}=3.808$ 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=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="2411.19642v2-abstract-short" style="display: inline;"> The inclusive cross sections of prompt $J/蠄$ and $蠄(3686)$ production are measured at center-of-mass energies from 3.808 to 4.951 GeV. The dataset used is 22 fb$^{-1}$ of $e^{+}e^{-}$ annihilation data collected with the BESIII detector operating at the BEPCII storage ring. The results obtained are in agreement with the previous BESIII measurements of exclusive $J/蠄$ and $蠄(3686)$ production. The… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.19642v2-abstract-full').style.display = 'inline'; document.getElementById('2411.19642v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.19642v2-abstract-full" style="display: none;"> The inclusive cross sections of prompt $J/蠄$ and $蠄(3686)$ production are measured at center-of-mass energies from 3.808 to 4.951 GeV. The dataset used is 22 fb$^{-1}$ of $e^{+}e^{-}$ annihilation data collected with the BESIII detector operating at the BEPCII storage ring. The results obtained are in agreement with the previous BESIII measurements of exclusive $J/蠄$ and $蠄(3686)$ production. The average values obtained for the cross sections measured in the center-of-mass energy ranges from 4.527 to 4.951 GeV for $J/蠄$ and from 4.843 to 4.951 GeV for $蠄(3686)$, where the impact of known resonances is negligible, are $14.0\pm1.7\pm3.1$ pb and $15.3\pm3.0$ pb, respectively. For $J/蠄$, the first and the second uncertainties are statistical and systematic, respectively. For $蠄(3686)$, the uncertainty is total. These values are useful for testing charmonium production models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.19642v2-abstract-full').style.display = 'none'; document.getElementById('2411.19642v2-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">20 pages, 6 figures Accepted for publication as a Regular Article in Physical Review D</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.15752">arXiv:2411.15752</a> <span> [<a href="https://arxiv.org/pdf/2411.15752">pdf</a>, <a href="https://arxiv.org/format/2411.15752">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 cross sections of $e^+e^-\to K^0_S K^0_S 蠄(3686)$ from $\sqrt{s}=$ 4.682 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=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+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. (642 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="2411.15752v1-abstract-short" style="display: inline;"> The process $e^+e^-\to K^0_S K^0_S 蠄(3686)$ is studied by analyzing $e^+e^-$ collision data samples collected at eight center-of-mass energies ranging from 4.682 to 4.951 GeV with the BESIII detector operating at the BEPCII collider, corresponding to an integrated luminosity of $4.1~{\rm fb}^{-1}$. Observation of the $e^+e^-\to K^0_S K^0_S 蠄(3686)$ process is found for the first time with a statis… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.15752v1-abstract-full').style.display = 'inline'; document.getElementById('2411.15752v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.15752v1-abstract-full" style="display: none;"> The process $e^+e^-\to K^0_S K^0_S 蠄(3686)$ is studied by analyzing $e^+e^-$ collision data samples collected at eight center-of-mass energies ranging from 4.682 to 4.951 GeV with the BESIII detector operating at the BEPCII collider, corresponding to an integrated luminosity of $4.1~{\rm fb}^{-1}$. Observation of the $e^+e^-\to K^0_S K^0_S 蠄(3686)$ process is found for the first time with a statistical significance of $6.3蟽$, and the cross sections at each center-of-mass energy are measured. The ratio of cross sections of $e^+e^-\to K_S^0 K_S^0 蠄(3686)$ relative to $e^+e^-\to K^+ K^- 蠄(3686)$ is determined to be $\frac{蟽(e^+e^-\to K_S^0 K_S^0 蠄(3686))}{蟽(e^+e^-\to K^+ K^- 蠄(3686))}=0.45 \pm 0.25$, which is consistent with the prediction based on isospin symmetry. The uncertainty includes both statistical and systematic contributions. Additionally, the $K_S^0蠄(3686)$ invariant mass distribution is found to be consistent with three-body phase space. The significance of a contribution beyond three-body phase space is only $0.8蟽$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.15752v1-abstract-full').style.display = 'none'; document.getElementById('2411.15752v1-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.15689">arXiv:2411.15689</a> <span> [<a href="https://arxiv.org/pdf/2411.15689">pdf</a>, <a href="https://arxiv.org/format/2411.15689">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 - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> High-lying states in the charmonium family </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Pan%2C+Z">Zhi-Hao Pan</a>, <a href="/search/hep-ex?searchtype=author&query=Liu%2C+C">Cheng-Xi Liu</a>, <a href="/search/hep-ex?searchtype=author&query=Man%2C+Z">Zi-Long Man</a>, <a href="/search/hep-ex?searchtype=author&query=Liu%2C+X">Xiang Liu</a> </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="2411.15689v2-abstract-short" style="display: inline;"> Our understanding of high-lying states within the charmonium family remains incomplete, particularly in light of recent observations of charmonium states at energies above 4 GeV. In this study, we investigate the spectroscopic properties of several high-lying charmonia, focusing on the $D$-, $F$-, and $G$-wave states. A mass spectrum analysis is conducted, incorporating the unquenched effects. We… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.15689v2-abstract-full').style.display = 'inline'; document.getElementById('2411.15689v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.15689v2-abstract-full" style="display: none;"> Our understanding of high-lying states within the charmonium family remains incomplete, particularly in light of recent observations of charmonium states at energies above 4 GeV. In this study, we investigate the spectroscopic properties of several high-lying charmonia, focusing on the $D$-, $F$-, and $G$-wave states. A mass spectrum analysis is conducted, incorporating the unquenched effects. We then present a detailed study of the strong decay properties, including partial decay widths for two-body strong decays permitted by the Okubo-Zweig-Iizuka (OZI) rule. Additionally, we explore the primary radiative decay channels associated with these states. Theoretical predictions provided here aim to guide future experimental searches for high-lying charmonium states, particularly at BESIII, Belle II and LHCb. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.15689v2-abstract-full').style.display = 'none'; document.getElementById('2411.15689v2-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">13 pages, 5 tables and 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/2411.11648">arXiv:2411.11648</a> <span> [<a href="https://arxiv.org/pdf/2411.11648">pdf</a>, <a href="https://arxiv.org/ps/2411.11648">ps</a>, <a href="https://arxiv.org/format/2411.11648">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Evidence for Two Excited $惟^{-}$ Hyperons </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=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>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (650 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="2411.11648v1-abstract-short" style="display: inline;"> Using $e^+e^-$ collision data corresponding to an integrated luminosity of 19 fb$^{-1}$ collected by the BESIII detector at center-of-mass energies ranging from 4.13 to 4.70 GeV, we report the first evidence for a new excited $惟^{-}$ hyperon, the $惟^*(2109)^{-}$, through the process $e^+ e^- \to 惟^*(2109)^{-} \bar惟^{+} +c.c.$ with a significance of 3.7 $蟽$. The mass and width of $惟^*(2109)^{-}$ ar… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.11648v1-abstract-full').style.display = 'inline'; document.getElementById('2411.11648v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.11648v1-abstract-full" style="display: none;"> Using $e^+e^-$ collision data corresponding to an integrated luminosity of 19 fb$^{-1}$ collected by the BESIII detector at center-of-mass energies ranging from 4.13 to 4.70 GeV, we report the first evidence for a new excited $惟^{-}$ hyperon, the $惟^*(2109)^{-}$, through the process $e^+ e^- \to 惟^*(2109)^{-} \bar惟^{+} +c.c.$ with a significance of 3.7 $蟽$. The mass and width of $惟^*(2109)^{-}$ are measured to be $2108.8 \pm 5.5_{\rm stat} \pm 1.5_{\rm syst} {\rm MeV}/c^{2}$ and $21.6 \pm 17.7_{\rm stat} \pm 9.4_{\rm syst} {\rm MeV}$, respectively. We also present evidence for production of the $惟^*(2012)^{-}$ in the process $e^+ e^- \to 惟^*(2012)^{-} \bar惟^{+} +c.c.$ with a significance of 3.7 $蟽$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.11648v1-abstract-full').style.display = 'none'; document.getElementById('2411.11648v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.07730">arXiv:2411.07730</a> <span> [<a href="https://arxiv.org/pdf/2411.07730">pdf</a>, <a href="https://arxiv.org/ps/2411.07730">ps</a>, <a href="https://arxiv.org/format/2411.07730">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 light scalar $a_{0}(980)$ through the decay $D^{0} \to a_{0}(980)^-e^{+} 谓_{e}$ with $a_{0}(980)^- \to 畏蟺^-$ </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+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. (649 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="2411.07730v1-abstract-short" style="display: inline;"> Using 7.93 ${\rm fb^{-1}}$ of $e^+e^-$ collision data collected at a center-of-mass energy of 3.773 ${\rm GeV}$ with the BESIII detector, we present an analysis of the decay $D^{0} \to 畏蟺^- e^+ 谓_{e}$. The branching fraction of the decay $D^{0} \to a_{0}(980)^{-} e^+ 谓_{e}$ with $a_{0}(980)^{-} \to 畏蟺^{-}$ is measured to be $(0.86\pm0.17_{\text{stat}}\pm0.05_{\text{syst}})\times 10^{-4}$. The deca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.07730v1-abstract-full').style.display = 'inline'; document.getElementById('2411.07730v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.07730v1-abstract-full" style="display: none;"> Using 7.93 ${\rm fb^{-1}}$ of $e^+e^-$ collision data collected at a center-of-mass energy of 3.773 ${\rm GeV}$ with the BESIII detector, we present an analysis of the decay $D^{0} \to 畏蟺^- e^+ 谓_{e}$. The branching fraction of the decay $D^{0} \to a_{0}(980)^{-} e^+ 谓_{e}$ with $a_{0}(980)^{-} \to 畏蟺^{-}$ is measured to be $(0.86\pm0.17_{\text{stat}}\pm0.05_{\text{syst}})\times 10^{-4}$. The decay dynamics of this process is studied with a single-pole parameterization of the hadronic form factor and the Flatt茅 formula describing the $a_0(980)$ line shape in the differential decay rate. The product of the form factor $f^{ a_0}_{+}(0)$ and the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cd}|$ is determined for the first time with the result $f^{ a_0}_+(0)|V_{cd}|=0.126\pm0.013_{\rm stat}\pm0.003_{\rm syst}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.07730v1-abstract-full').style.display = 'none'; document.getElementById('2411.07730v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.21841">arXiv:2410.21841</a> <span> [<a href="https://arxiv.org/pdf/2410.21841">pdf</a>, <a href="https://arxiv.org/ps/2410.21841">ps</a>, <a href="https://arxiv.org/format/2410.21841">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 $螞$-$\bar螞 $ oscillation in $J/蠄\rightarrow螞\bar螞$ decay </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+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. (638 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="2410.21841v2-abstract-short" style="display: inline;"> Using $(10087\pm44)\times 10^{6}$ $J/蠄$ decays collected by the BESIII detector at the BEPCII collider, we search for baryon number violation via $螞-\bar螞$ oscillation in the decay $J/蠄\to 螞\bar螞$. No evidence for $螞-\bar螞$ oscillation is observed. The upper limit on the time-integrated probability of $螞-\bar螞$ oscillation is estimated to be $1.4\times 10^{-6}$, corresponding to an oscillation par… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.21841v2-abstract-full').style.display = 'inline'; document.getElementById('2410.21841v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.21841v2-abstract-full" style="display: none;"> Using $(10087\pm44)\times 10^{6}$ $J/蠄$ decays collected by the BESIII detector at the BEPCII collider, we search for baryon number violation via $螞-\bar螞$ oscillation in the decay $J/蠄\to 螞\bar螞$. No evidence for $螞-\bar螞$ oscillation is observed. The upper limit on the time-integrated probability of $螞-\bar螞$ oscillation is estimated to be $1.4\times 10^{-6}$, corresponding to an oscillation parameter less than $2.1\times 10^{-18}~\mathrm{GeV}$ at $90\%$ confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.21841v2-abstract-full').style.display = 'none'; document.getElementById('2410.21841v2-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.21611">arXiv:2410.21611</a> <span> [<a href="https://arxiv.org/pdf/2410.21611">pdf</a>, <a href="https://arxiv.org/format/2410.21611">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> CaloChallenge 2022: A Community Challenge for Fast Calorimeter Simulation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Krause%2C+C">Claudius Krause</a>, <a href="/search/hep-ex?searchtype=author&query=Giannelli%2C+M+F">Michele Faucci Giannelli</a>, <a href="/search/hep-ex?searchtype=author&query=Kasieczka%2C+G">Gregor Kasieczka</a>, <a href="/search/hep-ex?searchtype=author&query=Nachman%2C+B">Benjamin Nachman</a>, <a href="/search/hep-ex?searchtype=author&query=Salamani%2C+D">Dalila Salamani</a>, <a href="/search/hep-ex?searchtype=author&query=Shih%2C+D">David Shih</a>, <a href="/search/hep-ex?searchtype=author&query=Zaborowska%2C+A">Anna Zaborowska</a>, <a href="/search/hep-ex?searchtype=author&query=Amram%2C+O">Oz Amram</a>, <a href="/search/hep-ex?searchtype=author&query=Borras%2C+K">Kerstin Borras</a>, <a href="/search/hep-ex?searchtype=author&query=Buckley%2C+M+R">Matthew R. Buckley</a>, <a href="/search/hep-ex?searchtype=author&query=Buhmann%2C+E">Erik Buhmann</a>, <a href="/search/hep-ex?searchtype=author&query=Buss%2C+T">Thorsten Buss</a>, <a href="/search/hep-ex?searchtype=author&query=Cardoso%2C+R+P+D+C">Renato Paulo Da Costa Cardoso</a>, <a href="/search/hep-ex?searchtype=author&query=Caterini%2C+A+L">Anthony L. Caterini</a>, <a href="/search/hep-ex?searchtype=author&query=Chernyavskaya%2C+N">Nadezda Chernyavskaya</a>, <a href="/search/hep-ex?searchtype=author&query=Corchia%2C+F+A+G">Federico A. G. Corchia</a>, <a href="/search/hep-ex?searchtype=author&query=Cresswell%2C+J+C">Jesse C. Cresswell</a>, <a href="/search/hep-ex?searchtype=author&query=Diefenbacher%2C+S">Sascha Diefenbacher</a>, <a href="/search/hep-ex?searchtype=author&query=Dreyer%2C+E">Etienne Dreyer</a>, <a href="/search/hep-ex?searchtype=author&query=Ekambaram%2C+V">Vijay Ekambaram</a>, <a href="/search/hep-ex?searchtype=author&query=Eren%2C+E">Engin Eren</a>, <a href="/search/hep-ex?searchtype=author&query=Ernst%2C+F">Florian Ernst</a>, <a href="/search/hep-ex?searchtype=author&query=Favaro%2C+L">Luigi Favaro</a>, <a href="/search/hep-ex?searchtype=author&query=Franchini%2C+M">Matteo Franchini</a>, <a href="/search/hep-ex?searchtype=author&query=Gaede%2C+F">Frank Gaede</a> , et al. (44 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="2410.21611v1-abstract-short" style="display: inline;"> We present the results of the "Fast Calorimeter Simulation Challenge 2022" - the CaloChallenge. We study state-of-the-art generative models on four calorimeter shower datasets of increasing dimensionality, ranging from a few hundred voxels to a few tens of thousand voxels. The 31 individual submissions span a wide range of current popular generative architectures, including Variational AutoEncoder… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.21611v1-abstract-full').style.display = 'inline'; document.getElementById('2410.21611v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.21611v1-abstract-full" style="display: none;"> We present the results of the "Fast Calorimeter Simulation Challenge 2022" - the CaloChallenge. We study state-of-the-art generative models on four calorimeter shower datasets of increasing dimensionality, ranging from a few hundred voxels to a few tens of thousand voxels. The 31 individual submissions span a wide range of current popular generative architectures, including Variational AutoEncoders (VAEs), Generative Adversarial Networks (GANs), Normalizing Flows, Diffusion models, and models based on Conditional Flow Matching. We compare all submissions in terms of quality of generated calorimeter showers, as well as shower generation time and model size. To assess the quality we use a broad range of different metrics including differences in 1-dimensional histograms of observables, KPD/FPD scores, AUCs of binary classifiers, and the log-posterior of a multiclass classifier. The results of the CaloChallenge provide the most complete and comprehensive survey of cutting-edge approaches to calorimeter fast simulation to date. In addition, our work provides a uniquely detailed perspective on the important problem of how to evaluate generative models. As such, the results presented here should be applicable for other domains that use generative AI and require fast and faithful generation of samples in a large phase space. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.21611v1-abstract-full').style.display = 'none'; document.getElementById('2410.21611v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">204 pages, 100+ figures, 30+ tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> HEPHY-ML-24-05, FERMILAB-PUB-24-0728-CMS, TTK-24-43 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.20063">arXiv:2410.20063</a> <span> [<a href="https://arxiv.org/pdf/2410.20063">pdf</a>, <a href="https://arxiv.org/format/2410.20063">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(2025)089">10.1007/JHEP01(2025)089 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the branching fraction of $D^+ \to 蟿^+谓_蟿$ </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+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. (650 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="2410.20063v3-abstract-short" style="display: inline;"> By analyzing $e^{+}e^{-}$ collision data with an integrated luminosity of 7.9~fb$^{-1}$ collected with the BESIII detector at the center-of-mass energy of 3.773~GeV, the branching fraction of $D^+\to蟿^+谓_蟿$ is determined as $\mathcal{B}=(9.9\pm 1.1_\mathrm{stat}\pm 0.5_\mathrm{syst})\times10^{-4}$. Taking the most precise result… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.20063v3-abstract-full').style.display = 'inline'; document.getElementById('2410.20063v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.20063v3-abstract-full" style="display: none;"> By analyzing $e^{+}e^{-}$ collision data with an integrated luminosity of 7.9~fb$^{-1}$ collected with the BESIII detector at the center-of-mass energy of 3.773~GeV, the branching fraction of $D^+\to蟿^+谓_蟿$ is determined as $\mathcal{B}=(9.9\pm 1.1_\mathrm{stat}\pm 0.5_\mathrm{syst})\times10^{-4}$. Taking the most precise result $\mathcal{B}(D^+\to渭^+谓_渭)=(3.981\pm 0.079_\mathrm{stat}\pm0.040_\mathrm{syst})\times10^{-4}$, we determine $R_{蟿/渭} = 螕(D^+\to蟿^+谓_蟿)/螕(D^+\to渭^+谓_渭)= 2.49\pm0.31$, achieving a factor of two improvement in precision compared to the previous BESIII result. This measurement is in agreement with the standard model prediction of lepton flavor universality within one standard deviation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.20063v3-abstract-full').style.display = 'none'; document.getElementById('2410.20063v3-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 01 (2025) 089 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.18464">arXiv:2410.18464</a> <span> [<a href="https://arxiv.org/pdf/2410.18464">pdf</a>, <a href="https://arxiv.org/ps/2410.18464">ps</a>, <a href="https://arxiv.org/format/2410.18464">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 $畏_c(2S)\to p\bar{p}$ and branching fraction measurements of $蠂_{cJ} \to p\bar{p}$ via $蠄(2S)$ radiative 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=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>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (640 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="2410.18464v1-abstract-short" style="display: inline;"> Using $(27.12\pm0.14) \times 10^{8}$ $蠄(2S)$ events collected by the BESIII detector operating at BEPCII, we search for the decay $畏_c(2S)\to p\bar{p}$ via the process $蠄(2S)\to 纬畏_c(2S)$, and only find a signal with a significance of $1.7\,蟽$. The upper limit of the product branching fraction at the 90% confidence level is determined to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.18464v1-abstract-full').style.display = 'inline'; document.getElementById('2410.18464v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.18464v1-abstract-full" style="display: none;"> Using $(27.12\pm0.14) \times 10^{8}$ $蠄(2S)$ events collected by the BESIII detector operating at BEPCII, we search for the decay $畏_c(2S)\to p\bar{p}$ via the process $蠄(2S)\to 纬畏_c(2S)$, and only find a signal with a significance of $1.7\,蟽$. The upper limit of the product branching fraction at the 90% confidence level is determined to be $\mathcal{B}(蠄(2S)\to 纬畏_c(2S))\times \mathcal{B}(畏_c(2S)\to p\bar{p})<2.4\times 10^{-7}$. The branching fractions of $蠂_{cJ}\to p\bar{p}~(J=0,1,2)$ are also measured to be $\mathcal{B}(蠂_{c0}\to p\bar{p})=(2.51\pm0.02\pm0.08)\times 10^{-4}$, $\mathcal{B}(蠂_{c1}\to p\bar{p})=(8.16\pm0.09\pm0.25)\times 10^{-4}$, and $\mathcal{B}(蠂_{c2}\to p\bar{p})=(8.33\pm0.09\pm0.22)\times 10^{-4}$, where the first uncertainty is statistical and the second systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.18464v1-abstract-full').style.display = 'none'; document.getElementById('2410.18464v1-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.16912">arXiv:2410.16912</a> <span> [<a href="https://arxiv.org/pdf/2410.16912">pdf</a>, <a href="https://arxiv.org/ps/2410.16912">ps</a>, <a href="https://arxiv.org/format/2410.16912">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 branching fractions of the decays $螞_{c}^{+}\rightarrow螞K_{S}^{0}K^{+}$, $螞_{c}^{+}\rightarrow螞K_{S}^{0}蟺^{+}$ and $螞_{c}^{+}\rightarrow螞K^{*+}$ </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+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. (639 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="2410.16912v1-abstract-short" style="display: inline;"> Studies are performed of the Cabibbo-favored decay $螞_{c}^{+}\to螞K_{S}^{0}K^+$ and the singly Cabibbo-suppressed decay $螞_{c}^{+}\to螞K_{S}^{0}蟺^+$, based on a sample of $e^{+}e^{-}$ collision data, corresponding to an integrated luminosity of 4.5 fb$^{-1}$, accumulated at center-of-mass energies between $4599.53$ MeV and $4698.82$ MeV with the BESIII detector. The decay… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.16912v1-abstract-full').style.display = 'inline'; document.getElementById('2410.16912v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.16912v1-abstract-full" style="display: none;"> Studies are performed of the Cabibbo-favored decay $螞_{c}^{+}\to螞K_{S}^{0}K^+$ and the singly Cabibbo-suppressed decay $螞_{c}^{+}\to螞K_{S}^{0}蟺^+$, based on a sample of $e^{+}e^{-}$ collision data, corresponding to an integrated luminosity of 4.5 fb$^{-1}$, accumulated at center-of-mass energies between $4599.53$ MeV and $4698.82$ MeV with the BESIII detector. The decay $螞_{c}^{+}\to螞K_{S}^{0}蟺^+$ is observed for the first time. The branching fractions of $螞_{c}^{+}\to螞K_{S}^{0}K^+$ and $螞_{c}^{+}\to螞K_{S}^{0}蟺^+$ are measured to be $(3.04\pm0.30\pm0.16)\times 10^{-3}$ and $(1.73\pm0.27\pm0.10)\times 10^{-3}$, respectively, where the first uncertainties are statistical and the second are systematic. These results correspond to the most precise measurement of these quantities for both decays. Evidence of a $K^{*+}$ contribution in the $螞_{c}^{+}\to螞K_{S}^{0}蟺^+$ decay is found with a statistical significance of $4.7蟽$. The branching fraction of $螞_{c}^{+}\to螞K^{*+}$ is calculated under three possible interference scenarios. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.16912v1-abstract-full').style.display = 'none'; document.getElementById('2410.16912v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.16371">arXiv:2410.16371</a> <span> [<a href="https://arxiv.org/pdf/2410.16371">pdf</a>, <a href="https://arxiv.org/format/2410.16371">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 - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> </div> <p class="title is-5 mathjax"> Universality in the Near-Side Energy-Energy Correlator </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Liu%2C+X">Xiaohui Liu</a>, <a href="/search/hep-ex?searchtype=author&query=Vogelsang%2C+W">Werner Vogelsang</a>, <a href="/search/hep-ex?searchtype=author&query=Yuan%2C+F">Feng Yuan</a>, <a href="/search/hep-ex?searchtype=author&query=Zhu%2C+H+X">Hua Xing Zhu</a> </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="2410.16371v2-abstract-short" style="display: inline;"> We investigate the energy-energy correlator (EEC) of hadrons produced on the same side in $e^+e^-$ annihilation or in leading jets in $pp$ collisions. We observe a remarkable universality of the correlator. Using a non-perturbative transverse momentum dependent (TMD) fragmentation function to model the transition from the ``free-hadron" region to the perturbative collinear region, we are able to d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.16371v2-abstract-full').style.display = 'inline'; document.getElementById('2410.16371v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.16371v2-abstract-full" style="display: none;"> We investigate the energy-energy correlator (EEC) of hadrons produced on the same side in $e^+e^-$ annihilation or in leading jets in $pp$ collisions. We observe a remarkable universality of the correlator. Using a non-perturbative transverse momentum dependent (TMD) fragmentation function to model the transition from the ``free-hadron" region to the perturbative collinear region, we are able to describe the near-side shapes and peaks over a wide range of energy for both the $e^+e^-$ annihilation and the $pp$ jet substructure measurements in terms of just two parameters. We present further predictions for the ratio of the projected three-point energy correlator to the EEC. The excellent agreement between our calculations and the experimental data may provide new insights into the role of non-perturbative physics for EECs, and suggests the possibility of exploring non-perturbative TMDs using theoretical tools developed for the energy correlators. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.16371v2-abstract-full').style.display = 'none'; document.getElementById('2410.16371v2-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">6+4 pages, 5+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/2410.15339">arXiv:2410.15339</a> <span> [<a href="https://arxiv.org/pdf/2410.15339">pdf</a>, <a href="https://arxiv.org/format/2410.15339">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 - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Lattice">hep-lat</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.110.114041">10.1103/PhysRevD.110.114041 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spectroscopic Properties of Double-Strangeness Molecular Tetraquarks </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Wang%2C+F">Fu-Lai Wang</a>, <a href="/search/hep-ex?searchtype=author&query=Luo%2C+S">Si-Qiang Luo</a>, <a href="/search/hep-ex?searchtype=author&query=Qian%2C+R">Ri-Qing Qian</a>, <a href="/search/hep-ex?searchtype=author&query=Liu%2C+X">Xiang Liu</a> </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="2410.15339v3-abstract-short" style="display: inline;"> Inspired by recent advances in the study of the $K^{(*)} \bar K^{(*)}$ molecular tetraquarks and the $H$-dibaryon, we focus on the spectroscopic properties of the $\bar K^{(*)} \bar K^{(*)}$ systems, which exhibit exotic flavor quantum number of $ss\bar q \bar q$. A dynamical analysis is performed using the one-boson-exchange model to describe the effective interactions for these systems, accounti… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.15339v3-abstract-full').style.display = 'inline'; document.getElementById('2410.15339v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.15339v3-abstract-full" style="display: none;"> Inspired by recent advances in the study of the $K^{(*)} \bar K^{(*)}$ molecular tetraquarks and the $H$-dibaryon, we focus on the spectroscopic properties of the $\bar K^{(*)} \bar K^{(*)}$ systems, which exhibit exotic flavor quantum number of $ss\bar q \bar q$. A dynamical analysis is performed using the one-boson-exchange model to describe the effective interactions for these systems, accounting for both $S$-$D$ wave mixing and coupled-channel effects. By solving the coupled-channel Schr$\ddot{\rm o}$dinger equation, we identify the $I(J^P)=0(1^+)$ $\bar K \bar K^*$ and $I(J^P)=0(1^+)$ $\bar K^* \bar K^*$ states as the most likely candidates for double-strangeness molecular tetraquarks. Furthermore, we estimate their strong decay behaviors based on the effective Lagrangian approach, with several channels exhibiting considerable decay widths. Meanwhile, we investigate their magnetic moments and M1 radiative decay widths, shedding light on their inner structures, within the constituent quark model. Finally, we encourage experimentalists to focus on these predicted double-strangeness molecular tetraquark candidates, particularly in $B$ meson decays. Such efforts could pave the way for establishing the molecular tetraquark states in the light-quark sector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.15339v3-abstract-full').style.display = 'none'; document.getElementById('2410.15339v3-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 December, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">16 pages, 4 figures, and 5 tables</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, 114041 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.13515">arXiv:2410.13515</a> <span> [<a href="https://arxiv.org/pdf/2410.13515">pdf</a>, <a href="https://arxiv.org/format/2410.13515">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Lattice">hep-lat</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-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/10.1038/s41467-024-55042-y">10.1038/s41467-024-55042-y <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of a rare beta decay of the charmed baryon with a Graph Neural Network </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+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. (637 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="2410.13515v2-abstract-short" style="display: inline;"> The beta decay of the lightest charmed baryon $螞_c^+$ provides unique insights into the fundamental mechanism of strong and electro-weak interactions, serving as a testbed for investigating non-perturbative quantum chromodynamics and constraining the Cabibbo-Kobayashi-Maskawa (CKM) matrix parameters. This article presents the first observation of the Cabibbo-suppressed decay… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13515v2-abstract-full').style.display = 'inline'; document.getElementById('2410.13515v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.13515v2-abstract-full" style="display: none;"> The beta decay of the lightest charmed baryon $螞_c^+$ provides unique insights into the fundamental mechanism of strong and electro-weak interactions, serving as a testbed for investigating non-perturbative quantum chromodynamics and constraining the Cabibbo-Kobayashi-Maskawa (CKM) matrix parameters. This article presents the first observation of the Cabibbo-suppressed decay $螞_c^+ \rightarrow n e^+ 谓_{e}$, utilizing $4.5~\mathrm{fb}^{-1}$ of electron-positron annihilation data collected with the BESIII detector. A novel Graph Neural Network based technique effectively separates signals from dominant backgrounds, notably $螞_c^+ \rightarrow 螞e^+ 谓_{e}$, achieving a statistical significance exceeding $10蟽$. The absolute branching fraction is measured to be $(3.57\pm0.34_{\mathrm{stat.}}\pm0.14_{\mathrm{syst.}})\times 10^{-3}$. For the first time, the CKM matrix element $\left|V_{cd}\right|$ is extracted via a charmed baryon decay as $0.208\pm0.011_{\rm exp.}\pm0.007_{\rm LQCD}\pm0.001_{蟿_{螞_c^+}}$. This work highlights a new approach to further understand fundamental interactions in the charmed baryon sector, and showcases the power of modern machine learning techniques in experimental high-energy physics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13515v2-abstract-full').style.display = 'none'; document.getElementById('2410.13515v2-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 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">27 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature Commun. 16, 681 (2025) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.13478">arXiv:2410.13478</a> <span> [<a href="https://arxiv.org/pdf/2410.13478">pdf</a>, <a href="https://arxiv.org/format/2410.13478">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 $蠂_{c0}\to危^{+}\bar危^{-}畏$ and evidence for $蠂_{c1,2}\to危^{+}\bar危^{-}畏$ </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+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. (634 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="2410.13478v1-abstract-short" style="display: inline;"> Using $(27.12\pm 0.14)\times10^{8}$ $蠄(3686)$ events collected with the BESIII detector, the decay $蠂_{c0}\to危^{+}\bar危^{-}畏$ is observed for the first time with a statistical significance of $7.0蟽$, and evidence for $蠂_{c1}\to危^{+}\bar危^{-}畏$ and $蠂_{c2}\to危^{+}\bar危^{-}畏$ is found with statistical significances of $4.3蟽$ and $4.6蟽$, respectively. The branching fractions are determined to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13478v1-abstract-full').style.display = 'inline'; document.getElementById('2410.13478v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.13478v1-abstract-full" style="display: none;"> Using $(27.12\pm 0.14)\times10^{8}$ $蠄(3686)$ events collected with the BESIII detector, the decay $蠂_{c0}\to危^{+}\bar危^{-}畏$ is observed for the first time with a statistical significance of $7.0蟽$, and evidence for $蠂_{c1}\to危^{+}\bar危^{-}畏$ and $蠂_{c2}\to危^{+}\bar危^{-}畏$ is found with statistical significances of $4.3蟽$ and $4.6蟽$, respectively. The branching fractions are determined to be $\mathcal{B}(蠂_{c0}\to危^{+}\bar危^{-}畏)=({1.26 \pm 0.20 \pm 0.13}) \times 10^{-4}, ~\mathcal{B}(蠂_{c1}\to危^{+}\bar危^{-}畏)=({5.10 \pm 1.21 \pm 0.67}) \times 10^{-5}$, and $\mathcal{B}(蠂_{c2}\to危^{+}\bar危^{-}畏)=({5.46 \pm 1.18 \pm 0.50}) \times 10^{-5}$, where the first uncertainties are statistical, and the second ones are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13478v1-abstract-full').style.display = 'none'; document.getElementById('2410.13478v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.13368">arXiv:2410.13368</a> <span> [<a href="https://arxiv.org/pdf/2410.13368">pdf</a>, <a href="https://arxiv.org/format/2410.13368">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Observation 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=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+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. (638 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="2410.13368v1-abstract-short" style="display: inline;"> Utilizing 4.5${~\rm{fb}}^{-1}$ of $e^+e^-$ annihilation data collected with the BESIII detector at the BEPCII collider at center-of-mass energies between 4.600 and 4.699 GeV, the first observation of the singly Cabibbo-suppressed decay $螞_c^{+}\to p蟺^0$ is presented, with a statistical significance of $5.4蟽$. The ratio of the branching fractions of $螞_c^{+}\to p蟺^0$ and $螞_c^{+}\to p畏$ is measured… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13368v1-abstract-full').style.display = 'inline'; document.getElementById('2410.13368v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.13368v1-abstract-full" style="display: none;"> Utilizing 4.5${~\rm{fb}}^{-1}$ of $e^+e^-$ annihilation data collected with the BESIII detector at the BEPCII collider at center-of-mass energies between 4.600 and 4.699 GeV, the first observation of the singly Cabibbo-suppressed decay $螞_c^{+}\to p蟺^0$ is presented, with a statistical significance of $5.4蟽$. The ratio of the branching fractions of $螞_c^{+}\to p蟺^0$ and $螞_c^{+}\to p畏$ is measured as $\mathcal{B}(螞_c^{+}\to p蟺^0)/\mathcal{B}(螞_c^{+}\to p畏)=(0.120\pm0.026_{\rm stat.}\pm0.007_{\rm syst.})$. This result resolves the longstanding discrepancy between earlier experimental searches, providing both a decisive conclusion and valuable input for QCD-inspired theoretical models. A sophisticated deep learning approach using a Transformer-based architecture is employed to distinguish the signal from the prevalent hadronic backgrounds, complemented by thorough validation and systematic uncertainty quantification. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13368v1-abstract-full').style.display = 'none'; document.getElementById('2410.13368v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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, 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/2410.12620">arXiv:2410.12620</a> <span> [<a href="https://arxiv.org/pdf/2410.12620">pdf</a>, <a href="https://arxiv.org/format/2410.12620">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 $e^{+}e^{-} \to 蠁蠂_{c0}$ and $蠁畏_{c2}(1D)$ at center-of-mass energies from 4.47 to 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=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+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. (644 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="2410.12620v1-abstract-short" style="display: inline;"> Utilizing a data set of $6.7$ fb$^{-1}$ from electron-positron collisions recorded by the BESIII detector at the BEPCII storage ring, a search is conducted for the processes $e^{+}e^{-} \to 蠁蠂_{c0}$ and $蠁畏_{c2}(1D)$ across center-of-mass energies from 4.47 to 4.95 GeV. In the absence of any significant signals, upper limits are set. These include limits on the Born cross sections for… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.12620v1-abstract-full').style.display = 'inline'; document.getElementById('2410.12620v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.12620v1-abstract-full" style="display: none;"> Utilizing a data set of $6.7$ fb$^{-1}$ from electron-positron collisions recorded by the BESIII detector at the BEPCII storage ring, a search is conducted for the processes $e^{+}e^{-} \to 蠁蠂_{c0}$ and $蠁畏_{c2}(1D)$ across center-of-mass energies from 4.47 to 4.95 GeV. In the absence of any significant signals, upper limits are set. These include limits on the Born cross sections for $e^{+}e^{-} \to 蠁蠂_{c0}$, as well as the product of the Born cross section for $e^{+}e^{-} \to 蠁畏_{c2}(1D)$ and a sum of five branching fractions. Furthermore, the product of the electronic width of $Y(4660)$ and the branching fraction of the $Y(4660) \to 蠁蠂_{c0}$, denoted as $螕^{Y(4660)}_{e^{+}e^{-}} \mathcal{B}_{Y(4660) \to 蠁蠂_{c0}}$, is determined to be $< 0.40$ eV at the 90\% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.12620v1-abstract-full').style.display = 'none'; document.getElementById('2410.12620v1-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> 16 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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, 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/2410.11607">arXiv:2410.11607</a> <span> [<a href="https://arxiv.org/pdf/2410.11607">pdf</a>, <a href="https://arxiv.org/format/2410.11607">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 $蠂_{cJ}\to p \bar p K^0_S K^- 蟺^+ + c.c.$ </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=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=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>, <a href="/search/hep-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (648 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="2410.11607v1-abstract-short" style="display: inline;"> By analyzing $(27.12\pm0.14)\times10^8$ $蠄(3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decays of $蠂_{cJ} \to p \bar{p} K^0_S K^- 蟺^+ +c.c.(J=0, 1, 2)$ are observed for the first time with statistical significances greater than $10蟽$. The branching fractions of these decays are determined to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.11607v1-abstract-full').style.display = 'inline'; document.getElementById('2410.11607v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.11607v1-abstract-full" style="display: none;"> By analyzing $(27.12\pm0.14)\times10^8$ $蠄(3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decays of $蠂_{cJ} \to p \bar{p} K^0_S K^- 蟺^+ +c.c.(J=0, 1, 2)$ are observed for the first time with statistical significances greater than $10蟽$. The branching fractions of these decays are determined to be $\mathcal{B}(蠂_{c0}\to p \bar p K^{0}_{S} K^- 蟺^+ + c.c.)=(2.61\pm0.27\pm0.32)\times10^{-5},$ $\mathcal{B}(蠂_{c1}\to p \bar p K^{0}_{S} K^- 蟺^+ + c.c.)=(4.16\pm0.24\pm0.46)\times10^{-5},$ and $\mathcal{B}(蠂_{c2}\to p \bar p K^{0}_{S} K^- 蟺^+ + c.c.)=(5.63\pm0.28\pm0.46)\times10^{-5}$, respectively. The processes $蠂_{c1,2} \to \bar{p} 螞(1520) K^0_S 蟺^{+} + c.c.$ are also observed, with statistical significances of 5.7$蟽$ and 7.0$蟽$, respectively. Evidence for $蠂_{c0} \to\bar{p} 螞(1520) K^0_S 蟺^{+} + c.c.$ is found with statistical significances of 3.3$蟽$ each. The corresponding branching fractions are determined to be $\mathcal{B}(蠂_{c0}\to \bar{p} 螞(1520) K^0_S 蟺^{+} + c.c.) =(1.61^{+0.68}_{-0.64}\pm0.23)\times10^{-5}$, $\mathcal{B}(蠂_{c1}\to \bar{p} 螞(1520) K^0_S 蟺^{+} + c.c.)=(4.06^{+0.80}_{-0.76}\pm0.52)\times10^{-5}$, and $\mathcal{B}(蠂_{c2}\to \bar{p} 螞(1520) K^0_S 蟺^{+} + c.c.)=(4.09^{+0.87}_{-0.84}\pm0.42)\times10^{-5}$. Here, the first uncertainties are statistical and the second ones are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.11607v1-abstract-full').style.display = 'none'; document.getElementById('2410.11607v1-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">12 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/2410.08603">arXiv:2410.08603</a> <span> [<a href="https://arxiv.org/pdf/2410.08603">pdf</a>, <a href="https://arxiv.org/format/2410.08603">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 $D^+\to畏^\prime渭^+谓_渭$ and First Study of $D^+\to 畏^\prime \ell^+谓_\ell$ Decay Dynamics </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+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. (643 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="2410.08603v1-abstract-short" style="display: inline;"> Using $20.3\,\rm fb^{-1}$ of $e^+e^-$ collision data collected at the center-of-mass energy 3.773\,GeV with the BESIII detector, we report the first observation of the semileptonic decay $D^+\to 畏^\prime 渭^+谓_渭$ with significance of $8.6蟽$ including systematic uncertainties, and an improved measurement of $D^+\to 畏^\prime e^+谓_e$. The branching fractions of $D^+\to 畏^\prime 渭^+谓_渭$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.08603v1-abstract-full').style.display = 'inline'; document.getElementById('2410.08603v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.08603v1-abstract-full" style="display: none;"> Using $20.3\,\rm fb^{-1}$ of $e^+e^-$ collision data collected at the center-of-mass energy 3.773\,GeV with the BESIII detector, we report the first observation of the semileptonic decay $D^+\to 畏^\prime 渭^+谓_渭$ with significance of $8.6蟽$ including systematic uncertainties, and an improved measurement of $D^+\to 畏^\prime e^+谓_e$. The branching fractions of $D^+\to 畏^\prime 渭^+谓_渭$ and $D^+\to 畏^\prime e^+谓_e$ are determined to be $(1.92\pm0.28_{\rm stat}\pm 0.08_{\rm syst})\times 10^{-4}$ and $(1.79\pm0.19_{\rm stat}\pm 0.07_{\rm syst})\times 10^{-4}$, respectively. From an analysis of the $D^+\to 畏^\prime \ell^+谓_\ell$ decay dynamics, the product of the hadronic form factor $f_+^{畏^{\prime}}(0)$ and the CKM matrix element $|V_{cd}|$ is measured for the first time, giving $f^{畏^\prime}_+(0)|V_{cd}| = (5.92\pm0.56_{\rm stat}\pm0.13_{\rm syst})\times 10^{-2}$. No evidence for violation of $渭-e$ lepton-flavor universality is found in both the full range and several bins of $\ell^+谓_\ell$ four-momentum transfer. The $畏-畏^\prime$ mixing angle in the quark flavor basis is determined to be $蠁_{\rm P} =(39.8\pm0.8_{\rm stat}\pm0.3_{\rm syst})^\circ$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.08603v1-abstract-full').style.display = 'none'; document.getElementById('2410.08603v1-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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=Liu%2C+X&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Liu%2C+X&start=0" class="pagination-link 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