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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <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/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> <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-lat?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-lat?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-lat?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-lat?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-lat?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/hep-lat?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/hep-lat?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-lat?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-lat?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-lat?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-lat?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-lat?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-lat?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-lat?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/hep-lat?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-lat?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-lat?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-lat?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/hep-lat?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-lat?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-lat?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-lat?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/hep-lat?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-lat?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-lat?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="2410.13515v1-abstract-short" style="display: inline;"> The study of beta decay of the charmed baryon provides unique insights into the fundamental mechanism of the strong and electro-weak interactions. The $螞_c^+$, being the lightest charmed baryon, undergoes disintegration solely through the charm quark weak decay. Its beta decay provides an ideal laboratory for investigating non-perturbative effects in quantum chromodynamics and for constraining the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13515v1-abstract-full').style.display = 'inline'; document.getElementById('2410.13515v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.13515v1-abstract-full" style="display: none;"> The study of beta decay of the charmed baryon provides unique insights into the fundamental mechanism of the strong and electro-weak interactions. The $螞_c^+$, being the lightest charmed baryon, undergoes disintegration solely through the charm quark weak decay. Its beta decay provides an ideal laboratory for investigating non-perturbative effects in quantum chromodynamics and for constraining the fundamental parameters of the Cabibbo-Kobayashi-Maskawa matrix in weak interaction theory. This article presents the first observation of the Cabibbo-suppressed $螞_c^+$ beta decay into a neutron $螞_c^+ \rightarrow n e^+ 谓_{e}$, based on $4.5~\mathrm{fb}^{-1}$ of electron-positron annihilation data collected with the BESIII detector in the energy region above the $螞^+_c\bar螞^-_c$ threshold. A novel machine learning technique, leveraging Graph Neural Networks, has been utilized to effectively separate signals from dominant backgrounds, particularly $螞_c^+ \rightarrow 螞e^+ 谓_{e}$. This approach has yielded a statistical significance of more than $10蟽$. The absolute branching fraction of $螞_c^+ \rightarrow n e^+ 谓_{e}$ 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 to be $0.208\pm0.011_{\rm exp.}\pm0.007_{\rm LQCD}\pm0.001_{蟿_{螞_c^+}}$. This study provides a new probe to further understand fundamental interactions in the charmed baryon sector, and demonstrates the power of modern machine learning techniques in enhancing experimental capability in high energy physics research. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13515v1-abstract-full').style.display = 'none'; document.getElementById('2410.13515v1-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">28 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/2209.11940">arXiv:2209.11940</a> <span> [<a href="https://arxiv.org/pdf/2209.11940">pdf</a>, <a href="https://arxiv.org/format/2209.11940">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> <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 Theory">nucl-th</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/PhysRevC.107.024908">10.1103/PhysRevC.107.024908 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Higher-Order Cumulants and Correlation Functions of Proton Multiplicity Distributions in $\sqrt{s_{\mathrm{NN}}}$ = 3 GeV Au+Au Collisions at the RHIC STAR Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=STAR+Collaboration"> STAR Collaboration</a>, <a href="/search/hep-lat?searchtype=author&query=Abdallah%2C+M+S">M. S. Abdallah</a>, <a href="/search/hep-lat?searchtype=author&query=Aboona%2C+B+E">B. E. Aboona</a>, <a href="/search/hep-lat?searchtype=author&query=Adam%2C+J">J. Adam</a>, <a href="/search/hep-lat?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/hep-lat?searchtype=author&query=Adams%2C+J+R">J. R. Adams</a>, <a href="/search/hep-lat?searchtype=author&query=Adkins%2C+J+K">J. K. Adkins</a>, <a href="/search/hep-lat?searchtype=author&query=Aggarwal%2C+I">I. Aggarwal</a>, <a href="/search/hep-lat?searchtype=author&query=Aggarwal%2C+M+M">M. M. Aggarwal</a>, <a href="/search/hep-lat?searchtype=author&query=Ahammed%2C+Z">Z. Ahammed</a>, <a href="/search/hep-lat?searchtype=author&query=Anderson%2C+D+M">D. M. Anderson</a>, <a href="/search/hep-lat?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/hep-lat?searchtype=author&query=Atchison%2C+J">J. Atchison</a>, <a href="/search/hep-lat?searchtype=author&query=Bairathi%2C+V">V. Bairathi</a>, <a href="/search/hep-lat?searchtype=author&query=Baker%2C+W">W. Baker</a>, <a href="/search/hep-lat?searchtype=author&query=Cap%2C+J+G+B">J. G. Ball Cap</a>, <a href="/search/hep-lat?searchtype=author&query=Barish%2C+K">K. Barish</a>, <a href="/search/hep-lat?searchtype=author&query=Bellwied%2C+R">R. Bellwied</a>, <a href="/search/hep-lat?searchtype=author&query=Bhagat%2C+P">P. Bhagat</a>, <a href="/search/hep-lat?searchtype=author&query=Bhasin%2C+A">A. Bhasin</a>, <a href="/search/hep-lat?searchtype=author&query=Bhatta%2C+S">S. Bhatta</a>, <a href="/search/hep-lat?searchtype=author&query=Bielcik%2C+J">J. Bielcik</a>, <a href="/search/hep-lat?searchtype=author&query=Bielcikova%2C+J">J. Bielcikova</a>, <a href="/search/hep-lat?searchtype=author&query=Brandenburg%2C+J+D">J. D. Brandenburg</a>, <a href="/search/hep-lat?searchtype=author&query=Cai%2C+X+Z">X. Z. Cai</a> , et al. (349 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="2209.11940v2-abstract-short" style="display: inline;"> We report a measurement of cumulants and correlation functions of event-by-event proton multiplicity distributions from fixed-target Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 3 GeV measured by the STAR experiment. Protons are identified within the rapidity ($y$) and transverse momentum ($p_{\rm T}$) region $-0.9 < y<0$ and $0.4 < p_{\rm T} <2.0 $ GeV/$c$ in the center-of-mass frame. A systematic a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.11940v2-abstract-full').style.display = 'inline'; document.getElementById('2209.11940v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.11940v2-abstract-full" style="display: none;"> We report a measurement of cumulants and correlation functions of event-by-event proton multiplicity distributions from fixed-target Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 3 GeV measured by the STAR experiment. Protons are identified within the rapidity ($y$) and transverse momentum ($p_{\rm T}$) region $-0.9 < y<0$ and $0.4 < p_{\rm T} <2.0 $ GeV/$c$ in the center-of-mass frame. A systematic analysis of the proton cumulants and correlation functions up to sixth-order as well as the corresponding ratios as a function of the collision centrality, $p_{\rm T}$, and $y$ are presented. The effect of pileup and initial volume fluctuations on these observables and the respective corrections are discussed in detail. The results are compared to calculations from the hadronic transport UrQMD model as well as a hydrodynamic model. In the most central 5\% collisions, the value of proton cumulant ratio $C_4/C_2$ is negative, drastically different from the values observed in Au+Au collisions at higher energies. Compared to model calculations including Lattice QCD, a hadronic transport model, and a hydrodynamic model, the strong suppression in the ratio of $C_4/C_2$ at 3 GeV Au+Au collisions indicates an energy regime dominated by hadronic interactions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.11940v2-abstract-full').style.display = 'none'; document.getElementById('2209.11940v2-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, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </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">25 pages, 20 figures, 4 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 107, 024908(2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.08464">arXiv:2209.08464</a> <span> [<a href="https://arxiv.org/pdf/2209.08464">pdf</a>, <a href="https://arxiv.org/ps/2209.08464">ps</a>, <a href="https://arxiv.org/format/2209.08464">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> </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/JHEP12(2022)033">10.1007/JHEP12(2022)033 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Partial wave analysis of the charmed baryon hadronic decay $螞_c^+\to螞蟺^+蟺^0$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-lat?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-lat?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-lat?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-lat?searchtype=author&query=Albrecht%2C+M">M. Albrecht</a>, <a href="/search/hep-lat?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-lat?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-lat?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-lat?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-lat?searchtype=author&query=Bai%2C+X+H">X. H. Bai</a>, <a href="/search/hep-lat?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-lat?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-lat?searchtype=author&query=Ferroli%2C+R+B">R. Baldini Ferroli</a>, <a href="/search/hep-lat?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-lat?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-lat?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/hep-lat?searchtype=author&query=Becker%2C+D">D. Becker</a>, <a href="/search/hep-lat?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-lat?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-lat?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-lat?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-lat?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-lat?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/hep-lat?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-lat?searchtype=author&query=Boyko%2C+I">I. Boyko</a> , et al. (555 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="2209.08464v3-abstract-short" style="display: inline;"> Based on $e^+e^-$ collision samples corresponding to an integrated luminosity of 4.4 $\mbox{fb$^{-1}$}$ collected with the BESIII detector at center-of-mass energies between $4.6\,\,\mathrm{GeV}$ and $4.7\,\,\mathrm{GeV}$, a partial wave analysis of the charmed baryon hadronic decay $螞_c^+\to螞蟺^+蟺^0$ is performed, and the decays $螞_c^+\to螞蟻(770)^{+}$ and $螞_c^+\to危(1385)蟺$ are studied for the firs… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.08464v3-abstract-full').style.display = 'inline'; document.getElementById('2209.08464v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.08464v3-abstract-full" style="display: none;"> Based on $e^+e^-$ collision samples corresponding to an integrated luminosity of 4.4 $\mbox{fb$^{-1}$}$ collected with the BESIII detector at center-of-mass energies between $4.6\,\,\mathrm{GeV}$ and $4.7\,\,\mathrm{GeV}$, a partial wave analysis of the charmed baryon hadronic decay $螞_c^+\to螞蟺^+蟺^0$ is performed, and the decays $螞_c^+\to螞蟻(770)^{+}$ and $螞_c^+\to危(1385)蟺$ are studied for the first time. Making use of the world-average branching fraction $\mathcal{B}(螞_c^+\to螞蟺^+蟺^0)$, their branching fractions are determined to be \begin{eqnarray*} \begin{aligned} \mathcal{B}(螞_c^+\to螞蟻(770)^+)=&(4.06\pm0.30\pm0.35\pm0.23)\times10^{-2},\\ \mathcal{B}(螞_c^+\to危(1385)^+蟺^0)=&(5.86\pm0.49\pm0.52\pm0.35)\times10^{-3},\\ \mathcal{B}(螞_c^+\to危(1385)^0蟺^+)=&(6.47\pm0.59\pm0.66\pm0.38)\times10^{-3},\\ \end{aligned} \end{eqnarray*} where the first uncertainties are statistical, the second are systematic, and the third are from the uncertainties of the branching fractions $\mathcal{B}(螞_c^+\to螞蟺^+蟺^0)$ and $\mathcal{B}(危(1385)\to螞蟺)$. In addition, %according to amplitudes determined from the partial wave analysis, the decay asymmetry parameters are measured to be $伪_{螞蟻(770)^+}=-0.763\pm0.053\pm0.045$, $伪_{危(1385)^{+}蟺^0}=-0.917\pm0.069\pm0.056$, and $伪_{危(1385)^{0}蟺^+}=-0.789\pm0.098\pm0.056$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.08464v3-abstract-full').style.display = 'none'; document.getElementById('2209.08464v3-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, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2205.12767">arXiv:2205.12767</a> <span> [<a href="https://arxiv.org/pdf/2205.12767">pdf</a>, <a href="https://arxiv.org/format/2205.12767">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</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 Theory">nucl-th</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.106.054509">10.1103/PhysRevD.106.054509 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Variational thermal quantum simulation of the lattice Schwinger model </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=Xie%2C+X">Xu-Dan Xie</a>, <a href="/search/hep-lat?searchtype=author&query=Guo%2C+X">Xingyu Guo</a>, <a href="/search/hep-lat?searchtype=author&query=Xing%2C+H">Hongxi Xing</a>, <a href="/search/hep-lat?searchtype=author&query=Xue%2C+Z">Zheng-Yuan Xue</a>, <a href="/search/hep-lat?searchtype=author&query=Zhang%2C+D">Dan-Bo Zhang</a>, <a href="/search/hep-lat?searchtype=author&query=Zhu%2C+S">Shi-Liang 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="2205.12767v3-abstract-short" style="display: inline;"> Confinement of quarks due to the strong interaction and the deconfinement at high temperatures and high densities are a basic paradigm for understanding the nuclear matter. Their simulation, however, is very challenging for classical computers due to the sign problem of solving equilibrium states of finite-temperature quantum chromodynamical systems at finite density. In this paper, we propose a v… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.12767v3-abstract-full').style.display = 'inline'; document.getElementById('2205.12767v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2205.12767v3-abstract-full" style="display: none;"> Confinement of quarks due to the strong interaction and the deconfinement at high temperatures and high densities are a basic paradigm for understanding the nuclear matter. Their simulation, however, is very challenging for classical computers due to the sign problem of solving equilibrium states of finite-temperature quantum chromodynamical systems at finite density. In this paper, we propose a variational approach, using the lattice Schwinger model, to simulate the confinement or deconfinement by investigating the string tension. We adopt an ansatz that the string tension can be evaluated without referring to quantum protocols for measuring the entropy in the free energy. Results of numeral simulation show that the string tension decreases both along the increasing of the temperature and the chemical potential, which can be an analog of the phase diagram of QCD. Our work paves a way for exploiting near-term quantum computers for investigating the phase diagram of finite-temperature and finite density for nuclear matters. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.12767v3-abstract-full').style.display = 'none'; document.getElementById('2205.12767v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 106, 054509(2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2104.09131">arXiv:2104.09131</a> <span> [<a href="https://arxiv.org/pdf/2104.09131">pdf</a>, <a href="https://arxiv.org/ps/2104.09131">ps</a>, <a href="https://arxiv.org/format/2104.09131">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> </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.104.012006">10.1103/PhysRevD.104.012006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of the decay $D^+\to K^*(892)^+ K_S^0$ in $D^+\to K^+ K_S^0 蟺^0$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/hep-lat?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-lat?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-lat?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/hep-lat?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/hep-lat?searchtype=author&query=Albrecht%2C+M">M. Albrecht</a>, <a href="/search/hep-lat?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/hep-lat?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-lat?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/hep-lat?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-lat?searchtype=author&query=Bai%2C+X+H">X. H. Bai</a>, <a href="/search/hep-lat?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-lat?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-lat?searchtype=author&query=Ferroli%2C+R+B">R. Baldini Ferroli</a>, <a href="/search/hep-lat?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/hep-lat?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-lat?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-lat?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-lat?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-lat?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-lat?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-lat?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/hep-lat?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/hep-lat?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-lat?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (492 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="2104.09131v3-abstract-short" style="display: inline;"> Based on an $e^{+}e^{-}$ collision data sample corresponding to an integrated luminosity of 2.93 $\mathrm{fb}^{-1}$ collected with the BESIII detector at $\sqrt{s}=3.773 \mathrm{GeV}$, the first amplitude analysis of the singly Cabibbo-suppressed decay $D^{+}\to K^+ K_S^0 蟺^0$ is performed. From the amplitude analysis, the $K^*(892)^+ K_S^0$ component is found to be dominant with a fraction of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.09131v3-abstract-full').style.display = 'inline'; document.getElementById('2104.09131v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2104.09131v3-abstract-full" style="display: none;"> Based on an $e^{+}e^{-}$ collision data sample corresponding to an integrated luminosity of 2.93 $\mathrm{fb}^{-1}$ collected with the BESIII detector at $\sqrt{s}=3.773 \mathrm{GeV}$, the first amplitude analysis of the singly Cabibbo-suppressed decay $D^{+}\to K^+ K_S^0 蟺^0$ is performed. From the amplitude analysis, the $K^*(892)^+ K_S^0$ component is found to be dominant with a fraction of $(57.1\pm2.6\pm4.2)\%$, where the first uncertainty is statistical and the second systematic. In combination with the absolute branching fraction $\mathcal{B}(D^+\to K^+ K_S^0 蟺^0)$ measured by BESIII, we obtain $\mathcal{B}(D^+\to K^*(892)^+ K_S^0)=(8.69\pm0.40\pm0.64\pm0.51)\times10^{-3}$, where the third uncertainty is due to the branching fraction $\mathcal{B}(D^+\to K^+ K_S^0 蟺^0)$. The precision of this result is significantly improved compared to the previous measurement. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.09131v3-abstract-full').style.display = 'none'; document.getElementById('2104.09131v3-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 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2021. </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, 15 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 104, 012006 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1908.08640">arXiv:1908.08640</a> <span> [<a href="https://arxiv.org/pdf/1908.08640">pdf</a>, <a href="https://arxiv.org/ps/1908.08640">ps</a>, <a href="https://arxiv.org/format/1908.08640">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 - 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.101.014506">10.1103/PhysRevD.101.014506 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Lattice simulations with G-parity Boundary Conditions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=Christ%2C+N">Norman Christ</a>, <a href="/search/hep-lat?searchtype=author&query=Kelly%2C+C">Christopher Kelly</a>, <a href="/search/hep-lat?searchtype=author&query=Zhang%2C+D">Daiqian Zhang</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="1908.08640v1-abstract-short" style="display: inline;"> We discuss G-parity lattice boundary conditions as a means to impose momentum on the pion ground state without breaking isospin symmetry. This technique is expected to be critical for the precision measurement of $K\rightarrow(蟺蟺)_{I=0}$ matrix elements where physical kinematics demands moving pions in the final state and the statistical noise caused by disconnected contributions will make it diff… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.08640v1-abstract-full').style.display = 'inline'; document.getElementById('1908.08640v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1908.08640v1-abstract-full" style="display: none;"> We discuss G-parity lattice boundary conditions as a means to impose momentum on the pion ground state without breaking isospin symmetry. This technique is expected to be critical for the precision measurement of $K\rightarrow(蟺蟺)_{I=0}$ matrix elements where physical kinematics demands moving pions in the final state and the statistical noise caused by disconnected contributions will make it difficult to use multi-exponential fits to isolate this as an excited state. We present a formalism for computing hadronic Green's functions with G-parity boundary conditions, derive the discretized action and its symmetries, discuss how the strange quark can be introduced and detail techniques for the numerical implementation of these boundary conditions. We demonstrate and test these methods using several $16^3\times 32$ dynamical domain wall ensembles with a $420$ MeV pion mass and G-parity boundary conditions in one and two spatial directions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.08640v1-abstract-full').style.display = 'none'; document.getElementById('1908.08640v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 August, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2019. </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">76 pages, 11 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 101, 014506 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.06496">arXiv:1809.06496</a> <span> [<a href="https://arxiv.org/pdf/1809.06496">pdf</a>, <a href="https://arxiv.org/ps/1809.06496">ps</a>, <a href="https://arxiv.org/format/1809.06496">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> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.122.062001">10.1103/PhysRevLett.122.062001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of $D^+ \to f_0(500) e^+谓_e$ and Improved Measurements of $D \to蟻e^+谓_e$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-lat?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-lat?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/hep-lat?searchtype=author&query=Albrecht%2C+M">M. Albrecht</a>, <a href="/search/hep-lat?searchtype=author&query=Alekseev%2C+M">M. Alekseev</a>, <a href="/search/hep-lat?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/hep-lat?searchtype=author&query=An%2C+F+F">F. F. An</a>, <a href="/search/hep-lat?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-lat?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/hep-lat?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/hep-lat?searchtype=author&query=Ferroli%2C+R+B">R. Baldini Ferroli</a>, <a href="/search/hep-lat?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-lat?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/hep-lat?searchtype=author&query=Bennett%2C+D+W">D. W. Bennett</a>, <a href="/search/hep-lat?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</a>, <a href="/search/hep-lat?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/hep-lat?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-lat?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/hep-lat?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/hep-lat?searchtype=author&query=Boger%2C+E">E. Boger</a>, <a href="/search/hep-lat?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-lat?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-lat?searchtype=author&query=Cai%2C+H">H. Cai</a>, <a href="/search/hep-lat?searchtype=author&query=Cai%2C+X">X. Cai</a>, <a href="/search/hep-lat?searchtype=author&query=Calcaterra%2C+A">A. Calcaterra</a> , et al. (438 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="1809.06496v2-abstract-short" style="display: inline;"> Using a data sample corresponding to an integrated luminosity of 2.93~fb$^{-1}$ recorded by the BESIII detector at a center-of-mass energy of $3.773$ GeV, we present an analysis of the decays $\bar{D}^0\to蟺^+蟺^0 e^-\bar谓_e$ and $D^+\to蟺^-蟺^+ e^+谓_e$. By performing a partial wave analysis, the $蟺^+蟺^-$ $S$-wave contribution to $D^+\to蟺^-蟺^+ e^+谓_e$ is observed to be $(25.7\pm1.6\pm1.1)$% with a sta… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.06496v2-abstract-full').style.display = 'inline'; document.getElementById('1809.06496v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.06496v2-abstract-full" style="display: none;"> Using a data sample corresponding to an integrated luminosity of 2.93~fb$^{-1}$ recorded by the BESIII detector at a center-of-mass energy of $3.773$ GeV, we present an analysis of the decays $\bar{D}^0\to蟺^+蟺^0 e^-\bar谓_e$ and $D^+\to蟺^-蟺^+ e^+谓_e$. By performing a partial wave analysis, the $蟺^+蟺^-$ $S$-wave contribution to $D^+\to蟺^-蟺^+ e^+谓_e$ is observed to be $(25.7\pm1.6\pm1.1)$% with a statistical significance greater than 10$蟽$, besides the dominant $P$-wave contribution. This is the first observation of the $S$-wave contribution. We measure the branching fractions $\mathcal{B}(D^{0} \to 蟻^- e^+ 谓_e) = (1.445\pm 0.058 \pm 0.039) \times10^{-3}$, $\mathcal{B}(D^{+} \to 蟻^0 e^+ 谓_e) = (1.860\pm 0.070 \pm 0.061) \times10^{-3}$, and $\mathcal{B}(D^{+} \to f_0(500) e^+ 谓_e, f_0(500)\to蟺^+蟺^-) = (6.30\pm 0.43 \pm 0.32) \times10^{-4}$. An upper limit of $\mathcal{B}(D^{+} \to f_0(980) e^+ 谓_e, f_0(980)\to蟺^+蟺^-) < 2.8 \times10^{-5}$ is set at the 90% confidence level. We also obtain the hadronic form factor ratios of $D\to 蟻e^+谓_e$ at $q^{2}=0$ assuming the single-pole dominance parameterization: $r_{V}=\frac{V(0)}{A_{1}(0)}=1.695\pm0.083\pm0.051$, $r_{2}=\frac{A_{2}(0)}{A_{1}(0)}=0.845\pm0.056\pm0.039$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.06496v2-abstract-full').style.display = 'none'; document.getElementById('1809.06496v2-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, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 122, 062001 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1603.03065">arXiv:1603.03065</a> <span> [<a href="https://arxiv.org/pdf/1603.03065">pdf</a>, <a href="https://arxiv.org/ps/1603.03065">ps</a>, <a href="https://arxiv.org/format/1603.03065">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 - Lattice">hep-lat</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"> Erratum: Standard-model prediction for direct CP violation in $K\to蟺蟺$ decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=Bai%2C+Z">Z. Bai</a>, <a href="/search/hep-lat?searchtype=author&query=Blum%2C+T">T. Blum</a>, <a href="/search/hep-lat?searchtype=author&query=Boyle%2C+P+A">P. A. Boyle</a>, <a href="/search/hep-lat?searchtype=author&query=Christ%2C+N+H">N. H. Christ</a>, <a href="/search/hep-lat?searchtype=author&query=Frison%2C+J">J. Frison</a>, <a href="/search/hep-lat?searchtype=author&query=Garron%2C+N">N. Garron</a>, <a href="/search/hep-lat?searchtype=author&query=Izubuchi%2C+T">T. Izubuchi</a>, <a href="/search/hep-lat?searchtype=author&query=Jung%2C+C">C. Jung</a>, <a href="/search/hep-lat?searchtype=author&query=Kelly%2C+C">C. Kelly</a>, <a href="/search/hep-lat?searchtype=author&query=Lehner%2C+C">C. Lehner</a>, <a href="/search/hep-lat?searchtype=author&query=Mawhinney%2C+R+D">R. D. Mawhinney</a>, <a href="/search/hep-lat?searchtype=author&query=Sachrajda%2C+C+T">C. T. Sachrajda</a>, <a href="/search/hep-lat?searchtype=author&query=Soni%2C+A">A. Soni</a>, <a href="/search/hep-lat?searchtype=author&query=Zhang%2C+D">D. Zhang</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="1603.03065v1-abstract-short" style="display: inline;"> In this document we address an error discovered in the ensemble generation for our calculation of the $I=0$ $K\to蟺蟺$ amplitude (Phys. Rev. Lett. 115, 212001 (2015), arXiv:1505.07863) whereby the same random numbers were used for the two independent quark flavors, resulting in small but measurable correlations between gauge observables separated by 12 units in the y-direction. We conclude that the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.03065v1-abstract-full').style.display = 'inline'; document.getElementById('1603.03065v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1603.03065v1-abstract-full" style="display: none;"> In this document we address an error discovered in the ensemble generation for our calculation of the $I=0$ $K\to蟺蟺$ amplitude (Phys. Rev. Lett. 115, 212001 (2015), arXiv:1505.07863) whereby the same random numbers were used for the two independent quark flavors, resulting in small but measurable correlations between gauge observables separated by 12 units in the y-direction. We conclude that the effects of this error are negligible compared to the overall errors on our calculation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.03065v1-abstract-full').style.display = 'none'; document.getElementById('1603.03065v1-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 March, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2016. </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">2 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/1505.07863">arXiv:1505.07863</a> <span> [<a href="https://arxiv.org/pdf/1505.07863">pdf</a>, <a href="https://arxiv.org/ps/1505.07863">ps</a>, <a href="https://arxiv.org/format/1505.07863">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 - Lattice">hep-lat</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.115.212001">10.1103/PhysRevLett.115.212001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Standard-model prediction for direct CP violation in $K\to蟺蟺$ decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=Bai%2C+Z">Z. Bai</a>, <a href="/search/hep-lat?searchtype=author&query=Blum%2C+T">T. Blum</a>, <a href="/search/hep-lat?searchtype=author&query=Boyle%2C+P+A">P. A. Boyle</a>, <a href="/search/hep-lat?searchtype=author&query=Christ%2C+N+H">N. H. Christ</a>, <a href="/search/hep-lat?searchtype=author&query=Frison%2C+J">J. Frison</a>, <a href="/search/hep-lat?searchtype=author&query=Garron%2C+N">N. Garron</a>, <a href="/search/hep-lat?searchtype=author&query=Izubuchi%2C+T">T. Izubuchi</a>, <a href="/search/hep-lat?searchtype=author&query=Jung%2C+C">C. Jung</a>, <a href="/search/hep-lat?searchtype=author&query=Kelly%2C+C">C. Kelly</a>, <a href="/search/hep-lat?searchtype=author&query=Lehner%2C+C">C. Lehner</a>, <a href="/search/hep-lat?searchtype=author&query=Mawhinney%2C+R+D">R. D. Mawhinney</a>, <a href="/search/hep-lat?searchtype=author&query=Sachrajda%2C+C+T">C. T. Sachrajda</a>, <a href="/search/hep-lat?searchtype=author&query=Soni%2C+A">A. Soni</a>, <a href="/search/hep-lat?searchtype=author&query=Zhang%2C+D">D. Zhang</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="1505.07863v4-abstract-short" style="display: inline;"> We report the first lattice QCD calculation of the complex kaon decay amplitude $A_0$ with physical kinematics, using a $32^3\times 64$ lattice volume and a single lattice spacing $a$, with $1/a= 1.3784(68)$ GeV. We find Re$(A_0) = 4.66(1.00)(1.26) \times 10^{-7}$ GeV and Im$(A_0) = -1.90(1.23)(1.08) \times 10^{-11}$ GeV, where the first error is statistical and the second systematic. The first va… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.07863v4-abstract-full').style.display = 'inline'; document.getElementById('1505.07863v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1505.07863v4-abstract-full" style="display: none;"> We report the first lattice QCD calculation of the complex kaon decay amplitude $A_0$ with physical kinematics, using a $32^3\times 64$ lattice volume and a single lattice spacing $a$, with $1/a= 1.3784(68)$ GeV. We find Re$(A_0) = 4.66(1.00)(1.26) \times 10^{-7}$ GeV and Im$(A_0) = -1.90(1.23)(1.08) \times 10^{-11}$ GeV, where the first error is statistical and the second systematic. The first value is in approximate agreement with the experimental result: Re$(A_0) = 3.3201(18) \times 10^{-7}$ GeV while the second can be used to compute the direct CP violating ratio Re$(\varepsilon'/\varepsilon)=1.38(5.15)(4.59)\times 10^{-4}$, which is $2.1蟽$ below the experimental value $16.6(2.3)\times 10^{-4}$. The real part of $A_0$ is CP conserving and serves as a test of our method while the result for Re$(\varepsilon'/\varepsilon)$ provides a new test of the standard-model theory of CP violation, one which can be made more accurate with increasing computer capability. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.07863v4-abstract-full').style.display = 'none'; document.getElementById('1505.07863v4-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 January, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 May, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2015. </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. Updated to match published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> RBRC 1141 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 115, 212001 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.00263">arXiv:1502.00263</a> <span> [<a href="https://arxiv.org/pdf/1502.00263">pdf</a>, <a href="https://arxiv.org/ps/1502.00263">ps</a>, <a href="https://arxiv.org/format/1502.00263">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 - Lattice">hep-lat</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</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.91.074502">10.1103/PhysRevD.91.074502 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> $K \rightarrow 蟺蟺$ $螖I=3/2$ decay amplitude in the continuum limit </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=Blum%2C+T">T. Blum</a>, <a href="/search/hep-lat?searchtype=author&query=Boyle%2C+P+A">P. A. Boyle</a>, <a href="/search/hep-lat?searchtype=author&query=Christ%2C+N+H">N. H. Christ</a>, <a href="/search/hep-lat?searchtype=author&query=Frison%2C+J">J. Frison</a>, <a href="/search/hep-lat?searchtype=author&query=Garron%2C+N">N. Garron</a>, <a href="/search/hep-lat?searchtype=author&query=Janowski%2C+T">T. Janowski</a>, <a href="/search/hep-lat?searchtype=author&query=Jung%2C+C">C. Jung</a>, <a href="/search/hep-lat?searchtype=author&query=Kelly%2C+C">C. Kelly</a>, <a href="/search/hep-lat?searchtype=author&query=Lehner%2C+C">C. Lehner</a>, <a href="/search/hep-lat?searchtype=author&query=Lytle%2C+A">A. Lytle</a>, <a href="/search/hep-lat?searchtype=author&query=Mawhinney%2C+R+D">R. D. Mawhinney</a>, <a href="/search/hep-lat?searchtype=author&query=Sachrajda%2C+C+T">C. T. Sachrajda</a>, <a href="/search/hep-lat?searchtype=author&query=Soni%2C+A">A. Soni</a>, <a href="/search/hep-lat?searchtype=author&query=Yin%2C+H">H. Yin</a>, <a href="/search/hep-lat?searchtype=author&query=Zhang%2C+D">D. Zhang</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="1502.00263v2-abstract-short" style="display: inline;"> We present new results for the amplitude $A_2$ for a kaon to decay into two pions with isospin $I=2$: Re$A_2 = 1.50(4)_\mathrm{stat}(14)_\mathrm{syst}\times 10^{-8}$ GeV; Im$A_2 = -6.99(20)_\mathrm{stat}(84)_\mathrm{syst}\times 10^{-13}$ GeV. These results were obtained from two ensembles generated at physical quark masses (in the isospin limit) with inverse lattice spacings $a^{-1}=1.728(4)$ GeV… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.00263v2-abstract-full').style.display = 'inline'; document.getElementById('1502.00263v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.00263v2-abstract-full" style="display: none;"> We present new results for the amplitude $A_2$ for a kaon to decay into two pions with isospin $I=2$: Re$A_2 = 1.50(4)_\mathrm{stat}(14)_\mathrm{syst}\times 10^{-8}$ GeV; Im$A_2 = -6.99(20)_\mathrm{stat}(84)_\mathrm{syst}\times 10^{-13}$ GeV. These results were obtained from two ensembles generated at physical quark masses (in the isospin limit) with inverse lattice spacings $a^{-1}=1.728(4)$ GeV and $2.358(7)$ GeV. We are therefore able to perform a continuum extrapolation and hence largely to remove the dominant systematic uncertainty from our earlier results, that due to lattice artefacts. The only previous lattice computation of $K\to蟺蟺$ decays at physical kinematics was performed using an ensemble at a single, rather coarse, value of the lattice spacing ($a^{-1}\simeq 1.37(1)$ GeV). We confirm the observation that there is a significant cancellation between the two dominant contributions to Re$A_2$ which we suggest is an important ingredient in understanding the $螖I=1/2$ rule, Re$A_0$/Re$A_2\simeq 22.5$, where the subscript denotes the total isospin of the two-pion final state. Our result for $A_2$ implies that the electroweak penguin contribution to $蔚^\prime/蔚$ is Re($蔚^\prime/蔚)_\textrm{EWP}=-(6.6\pm 1.0)\times 10^{-4}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.00263v2-abstract-full').style.display = 'none'; document.getElementById('1502.00263v2-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 July, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </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">46 pages, 12 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 91, 074502 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1311.3844">arXiv:1311.3844</a> <span> [<a href="https://arxiv.org/pdf/1311.3844">pdf</a>, <a href="https://arxiv.org/ps/1311.3844">ps</a>, <a href="https://arxiv.org/format/1311.3844">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 - Lattice">hep-lat</span> </div> </div> <p class="title is-5 mathjax"> Determination of the $A_2$ amplitude of $K \rightarrow 蟺蟺$ decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=Janowski%2C+T">T. Janowski</a>, <a href="/search/hep-lat?searchtype=author&query=Sachrajda%2C+C+T">C. T. Sachrajda</a>, <a href="/search/hep-lat?searchtype=author&query=Boyle%2C+P+A">P. A. Boyle</a>, <a href="/search/hep-lat?searchtype=author&query=Christ%2C+N+H">N. H. Christ</a>, <a href="/search/hep-lat?searchtype=author&query=Mawhinney%2C+R+D">R. D. Mawhinney</a>, <a href="/search/hep-lat?searchtype=author&query=Yin%2C+H">H. Yin</a>, <a href="/search/hep-lat?searchtype=author&query=Zhang%2C+D">D. Zhang</a>, <a href="/search/hep-lat?searchtype=author&query=Garron%2C+N">N. Garron</a>, <a href="/search/hep-lat?searchtype=author&query=Lytle%2C+A+T">A. T. Lytle</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="1311.3844v1-abstract-short" style="display: inline;"> We review the status of recent calculations by the RBC-UKQCD collaboration of the complex amplitude $A_2$, corresponding to the decay of a kaon to a two pion state with total isospin 2. In particular, we present preliminary results from two new ensembles: $48^3 \times 96$ with $a^{-1}=1.73$ GeV and $64^3 \times 128$ with $a^{-1}=2.3$ GeV, both at physical kinematics. Both ensembles were generated… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.3844v1-abstract-full').style.display = 'inline'; document.getElementById('1311.3844v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1311.3844v1-abstract-full" style="display: none;"> We review the status of recent calculations by the RBC-UKQCD collaboration of the complex amplitude $A_2$, corresponding to the decay of a kaon to a two pion state with total isospin 2. In particular, we present preliminary results from two new ensembles: $48^3 \times 96$ with $a^{-1}=1.73$ GeV and $64^3 \times 128$ with $a^{-1}=2.3$ GeV, both at physical kinematics. Both ensembles were generated Iwasaki gauge action and domain wall fermion action with 2+1 flavours. These results, in comparison to our earlier ones on a $32^3$ DSDR lattice with $a^{-1}=1.36$ GeV, enable us to significantly reduce the discretization errors. The partial cancellation between the two dominant contractions contributing to Re($A_2$) has been confirmed and we believe that this cancellation is a major contribution to the $螖I=1/2$ rule. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.3844v1-abstract-full').style.display = 'none'; document.getElementById('1311.3844v1-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 November, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2013. </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, presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1308.2760">arXiv:1308.2760</a> <span> [<a href="https://arxiv.org/pdf/1308.2760">pdf</a>, <a href="https://arxiv.org/ps/1308.2760">ps</a>, <a href="https://arxiv.org/format/1308.2760">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> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.112.132001">10.1103/PhysRevLett.112.132001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of a charged charmoniumlike structure in $e^+e^- \to (D^{*} \bar{D}^{*})^{\pm} 蟺^\mp$ at $\sqrt{s}=4.26$GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=BESIII+collaboration"> BESIII collaboration</a>, <a href="/search/hep-lat?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/hep-lat?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/hep-lat?searchtype=author&query=Albayrak%2C+O">O. Albayrak</a>, <a href="/search/hep-lat?searchtype=author&query=Ambrose%2C+D+J">D. J. Ambrose</a>, <a href="/search/hep-lat?searchtype=author&query=An%2C+F+F">F. F. An</a>, <a href="/search/hep-lat?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-lat?searchtype=author&query=Bai%2C+J+Z">J. Z. Bai</a>, <a href="/search/hep-lat?searchtype=author&query=Ferroli%2C+R+B">R. Baldini Ferroli</a>, <a href="/search/hep-lat?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/hep-lat?searchtype=author&query=Becker%2C+J">J. Becker</a>, <a href="/search/hep-lat?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</a>, <a href="/search/hep-lat?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/hep-lat?searchtype=author&query=Bian%2C+J+M">J. M. Bian</a>, <a href="/search/hep-lat?searchtype=author&query=Boger%2C+E">E. Boger</a>, <a href="/search/hep-lat?searchtype=author&query=Bondarenko%2C+O">O. Bondarenko</a>, <a href="/search/hep-lat?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/hep-lat?searchtype=author&query=Braun%2C+S">S. Braun</a>, <a href="/search/hep-lat?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/hep-lat?searchtype=author&query=Bytev%2C+V">V. Bytev</a>, <a href="/search/hep-lat?searchtype=author&query=Cai%2C+H">H. Cai</a>, <a href="/search/hep-lat?searchtype=author&query=Cai%2C+X">X. Cai</a>, <a href="/search/hep-lat?searchtype=author&query=Cakir%2C+O">O. Cakir</a>, <a href="/search/hep-lat?searchtype=author&query=Calcaterra%2C+A">A. Calcaterra</a>, <a href="/search/hep-lat?searchtype=author&query=Cao%2C+G+F">G. F. Cao</a> , et al. (336 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="1308.2760v2-abstract-short" style="display: inline;"> We study the process $e^+e^- \to (D^{*} \bar{D}^{*})^{\pm} 蟺^\mp$ at a center-of-mass energy of 4.26GeV using a 827pb$^{-1}$ data sample obtained with the BESIII detector at the Beijing Electron Positron Collider. Based on a partial reconstruction technique, the Born cross section is measured to be $(137\pm9\pm15)$pb. We observe a structure near the $(D^{*} \bar{D}^{*})^{\pm}$ threshold in the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1308.2760v2-abstract-full').style.display = 'inline'; document.getElementById('1308.2760v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1308.2760v2-abstract-full" style="display: none;"> We study the process $e^+e^- \to (D^{*} \bar{D}^{*})^{\pm} 蟺^\mp$ at a center-of-mass energy of 4.26GeV using a 827pb$^{-1}$ data sample obtained with the BESIII detector at the Beijing Electron Positron Collider. Based on a partial reconstruction technique, the Born cross section is measured to be $(137\pm9\pm15)$pb. We observe a structure near the $(D^{*} \bar{D}^{*})^{\pm}$ threshold in the $蟺^\mp$ recoil mass spectrum, which we denote as the $Z^{\pm}_c(4025)$. The measured mass and width of the structure are $(4026.3\pm2.6\pm3.7)$MeV/c$^2$ and $(24.8\pm5.6\pm7.7)$MeV, respectively. Its production ratio $\frac{蟽(e^+e^-\to Z^{\pm}_c(4025)蟺^\mp \to (D^{*} \bar{D}^{*})^{\pm} 蟺^\mp)}{蟽(e^+e^-\to (D^{*} \bar{D}^{*})^{\pm} 蟺^\mp)}$ is determined to be $0.65\pm0.09\pm0.06$. The first uncertainties are statistical and the second are systematic. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1308.2760v2-abstract-full').style.display = 'none'; document.getElementById('1308.2760v2-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, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 August, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2013. </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, 1 table; version accepted to be published in PRL</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 112, 132001 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1212.1474">arXiv:1212.1474</a> <span> [<a href="https://arxiv.org/pdf/1212.1474">pdf</a>, <a href="https://arxiv.org/format/1212.1474">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 - Lattice">hep-lat</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.110.152001">10.1103/PhysRevLett.110.152001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Emerging understanding of the 螖I = 1/2 Rule from Lattice QCD </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=Boyle%2C+P+A">P. A. Boyle</a>, <a href="/search/hep-lat?searchtype=author&query=Christ%2C+N+H">N. H. Christ</a>, <a href="/search/hep-lat?searchtype=author&query=Garron%2C+N">N. Garron</a>, <a href="/search/hep-lat?searchtype=author&query=Goode%2C+E+J">E. J. Goode</a>, <a href="/search/hep-lat?searchtype=author&query=Janowski%2C+T">T. Janowski</a>, <a href="/search/hep-lat?searchtype=author&query=Lehner%2C+C">C. Lehner</a>, <a href="/search/hep-lat?searchtype=author&query=Liu%2C+Q">Q. Liu</a>, <a href="/search/hep-lat?searchtype=author&query=Lytle%2C+A+T">A. T. Lytle</a>, <a href="/search/hep-lat?searchtype=author&query=Sachrajda%2C+C+T">C. T. Sachrajda</a>, <a href="/search/hep-lat?searchtype=author&query=Soni%2C+A">A. Soni</a>, <a href="/search/hep-lat?searchtype=author&query=Zhang%2C+D">D. Zhang</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="1212.1474v2-abstract-short" style="display: inline;"> There has been much speculation as to the origin of the 螖I = 1/2 rule (Re A_0/Re A_2 \simeq 22.5). We find that the two dominant contributions to the 螖I=3/2, K \to 蟺蟺 correlation functions have opposite signs leading to a significant cancellation. This partial cancellation occurs in our computation of Re A_2 with physical quark masses and kinematics (where we reproduce the experimental value of A_… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1212.1474v2-abstract-full').style.display = 'inline'; document.getElementById('1212.1474v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1212.1474v2-abstract-full" style="display: none;"> There has been much speculation as to the origin of the 螖I = 1/2 rule (Re A_0/Re A_2 \simeq 22.5). We find that the two dominant contributions to the 螖I=3/2, K \to 蟺蟺 correlation functions have opposite signs leading to a significant cancellation. This partial cancellation occurs in our computation of Re A_2 with physical quark masses and kinematics (where we reproduce the experimental value of A_2) and also for heavier pions at threshold. For Re A_0, although we do not have results at physical kinematics, we do have results for pions at zero-momentum with m_蟺 \simeq 420 MeV (Re A_0/Re A_2=9.1(2.1)) and m_蟺 \simeq 330 MeV (Re A_0/Re A_2=12.0(1.7)). The contributions which partially cancel in Re A_2 are also the largest ones in Re A_0, but now they have the same sign and so enhance this amplitude. The emerging explanation of the 螖I=1/2 rule is a combination of the perturbative running to scales of O(2 GeV), a relative suppression of Re A_2 through the cancellation of the two dominant contributions and the corresponding enhancement of Re A_0. QCD and EWP penguin operators make only very small contributions at such scales. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1212.1474v2-abstract-full').style.display = 'none'; document.getElementById('1212.1474v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 May, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 December, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2012. </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">5 pages, 4 figures. v2 minor revisions to coincide w/ published version</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0809.1869">arXiv:0809.1869</a> <span> [<a href="https://arxiv.org/pdf/0809.1869">pdf</a>, <a href="https://arxiv.org/ps/0809.1869">ps</a>, <a href="https://arxiv.org/format/0809.1869">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> </div> </div> <p class="title is-5 mathjax"> Physics at BES-III </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-lat?searchtype=author&query=Asner%2C+D+M">D. M. Asner</a>, <a href="/search/hep-lat?searchtype=author&query=Barnes%2C+T">T. Barnes</a>, <a href="/search/hep-lat?searchtype=author&query=Bian%2C+J+M">J. M. Bian</a>, <a href="/search/hep-lat?searchtype=author&query=Bigi%2C+I+I">I. I. Bigi</a>, <a href="/search/hep-lat?searchtype=author&query=Brambilla%2C+N">N. Brambilla</a>, <a href="/search/hep-lat?searchtype=author&query=Boyko%2C+I+R">I. R. Boyko</a>, <a href="/search/hep-lat?searchtype=author&query=Bytev%2C+V">V. Bytev</a>, <a href="/search/hep-lat?searchtype=author&query=Chao%2C+K+T">K. T. Chao</a>, <a href="/search/hep-lat?searchtype=author&query=Charles%2C+J">J. Charles</a>, <a href="/search/hep-lat?searchtype=author&query=Chen%2C+H+X">H. X. Chen</a>, <a href="/search/hep-lat?searchtype=author&query=Chen%2C+J+C">J. C. Chen</a>, <a href="/search/hep-lat?searchtype=author&query=Chen%2C+Y">Y. Chen</a>, <a href="/search/hep-lat?searchtype=author&query=Chen%2C+Y+Q">Y. Q. Chen</a>, <a href="/search/hep-lat?searchtype=author&query=Cheng%2C+H+Y">H. Y. Cheng</a>, <a href="/search/hep-lat?searchtype=author&query=Dedovich%2C+D">D. Dedovich</a>, <a href="/search/hep-lat?searchtype=author&query=Descotes-Genon%2C+S">S. Descotes-Genon</a>, <a href="/search/hep-lat?searchtype=author&query=Fu%2C+C+D">C. D. Fu</a>, <a href="/search/hep-lat?searchtype=author&query=Tormo%2C+X+G+i">X. Garcia i Tormo</a>, <a href="/search/hep-lat?searchtype=author&query=Gao%2C+Y+-">Y. -N. Gao</a>, <a href="/search/hep-lat?searchtype=author&query=He%2C+K+L">K. L. He</a>, <a href="/search/hep-lat?searchtype=author&query=He%2C+Z+G">Z. G. He</a>, <a href="/search/hep-lat?searchtype=author&query=Hu%2C+J+F">J. F. Hu</a>, <a href="/search/hep-lat?searchtype=author&query=Hu%2C+H+M">H. M. Hu</a>, <a href="/search/hep-lat?searchtype=author&query=Huang%2C+B">B. Huang</a>, <a href="/search/hep-lat?searchtype=author&query=Jia%2C+Y">Y. Jia</a> , et al. (60 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="0809.1869v1-abstract-short" style="display: inline;"> This physics book provides detailed discussions on important topics in $蟿$-charm physics that will be explored during the next few years at \bes3 . Both theoretical and experimental issues are covered, including extensive reviews of recent theoretical developments and experimental techniques. Among the subjects covered are: innovations in Partial Wave Analysis (PWA), theoretical and experimental… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0809.1869v1-abstract-full').style.display = 'inline'; document.getElementById('0809.1869v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0809.1869v1-abstract-full" style="display: none;"> This physics book provides detailed discussions on important topics in $蟿$-charm physics that will be explored during the next few years at \bes3 . Both theoretical and experimental issues are covered, including extensive reviews of recent theoretical developments and experimental techniques. Among the subjects covered are: innovations in Partial Wave Analysis (PWA), theoretical and experimental techniques for Dalitz-plot analyses, analysis tools to extract absolute branching fractions and measurements of decay constants, form factors, and CP-violation and \DzDzb-oscillation parameters. Programs of QCD studies and near-threshold tau-lepton physics measurements are also discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0809.1869v1-abstract-full').style.display = 'none'; document.getElementById('0809.1869v1-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 September, 2008; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2008. </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">Edited by Kuang-Ta Chao and Yi-Fang Wang</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> IHEP-Physics-Report-BES-III-2008-001 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> International Journal of Modern Physics A Volume: 24, Issue: 1 supp (2009) </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 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