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arXiv 2603.03120hep-lathep-ph
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关于ETMC从isoQCD对g_μ{-}2的HVP贡献的最新进展

An update on the HVP contribution to $g_μ{-}2$ in isoQCD from ETMC

University of Cyprus(塞浦路斯大学);The Cyprus Institute(塞浦路斯研究所);GSI Helmholtz Centre for Heavy Ion Research(德国重离子研究中心);University of Bern(伯尔尼大学)

Simone Bacchio, Alessandro De Santis, Antonio Evangelista, Roberto Frezzotti, Giuseppe Gagliardi, Marco Garofalo, Lorenzo Maio, Francesca Margari, Ferenc Pittler, Simone Romiti

AI总结:

ETMC利用isoQCD在等旋对称QCD中计算muon异常磁矩的主导阶真空极化贡献,并提供矢量和标量成分的结果。

摘要:

我们展示了由扩展扭质量协作组对在等旋对称QCD中muon异常磁矩的主导阶真空极化贡献的确定的最新进展。该计算基于五个N_f=2+1+1规范集合,这些集合使用Wilson-克利弗扭质量夸克在最大扭和近物理π质量下生成,覆盖了四个格子间距和两个体积。对于主导夸克连接贡献,我们采用两种不同的价夸克正则化方法,并给出了矢量和标量成分的结果。

英文摘要:

We present an update on the determination of the leading-order hadronic vacuum polarisation contribution to the muon anomalous magnetic moment in isospin-symmetric QCD by the Extended Twisted Mass Collaboration. The calculation is based on five $N_f = 2+1+1$ gauge ensembles generated with Wilson-clover twisted-mass quarks at maximal-twist and near-physical pion masses, spanning four lattice spacings and two volumes. For the dominant quark-connected contributions, we employ two distinct valence-quark regularisations and present results for both the isovector and isoscalar components.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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