论文标题

从ETMC对MUON G-2的LO HVP项的断开贡献

Disconnected contribution to the LO HVP term of muon g-2 from ETMC

论文作者

Alexandrou, Constantia, Bacchio, Simone, Dimopoulos, Petros, Finkenrath, Jacob, Frezzotti, Roberto, Gagliardi, Giuseppe, Garofalo, Marco, Hadjiyiannakou, Kyriakos, Kostrzewa, Bartosz, Jansen, Karl, Lubicz, Vittorio, Petschlies, Marcus, Sanfilippo, Francesco, Simula, Silvano, Urbach, Carsten, Wenger, Urs

论文摘要

我们介绍了对所谓的短和中间时间距离窗口中若恩异常磁矩的差异贡献(HVP)的分离确定。我们采用了由$ n_f = 2 + 1 + 1 + 1 $ Wilson Twisted Mass Clover改良的夸克(Quarks)的口味$ n_f = 2 + 1 + 1 $,质量大约调整为其物理价值的量规合奏。我们采用连续限制,使用三个晶格间距,约为0.08、0.07和0.06 FM。

We present a lattice determination of the disconnected contributions to the leading-order hadronic vacuum polarization (HVP) to the muon anomalous magnetic moment in the so-called short and intermediate time-distance windows. We employ gauge ensembles produced by the Extended Twisted Mass Collaboration (ETMC) with $N_f = 2 + 1 + 1$ flavours of Wilson twisted-mass clover-improved quarks with masses approximately tuned to their physical value. We take the continuum limit employing three lattice spacings at about 0.08, 0.07 and 0.06 fm.

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