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arXiv · 2212.07057

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

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

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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Constantia Alexandrou, Simone Bacchio, Petros Dimopoulos, Jacob Finkenrath, Roberto Frezzotti, Giuseppe Gagliardi, Marco Garofalo, Kyriakos Hadjiyiannakou, Bartosz Kostrzewa, Karl Jansen, Vittorio Lubicz, Marcus Petschlies, Francesco Sanfilippo, Silvano Simula, Carsten Urbach, Urs Wenger. 2022-12-14. Disconnected contribution to the LO HVP term of muon g-2 from ETMC. https://arxiv.org/abs/2212.07057

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