articlePhysical review. D/Physical review. D.Apr 19, 2023HYBRID OA

Lattice calculation of the short and intermediate time-distance hadronic vacuum polarization contributions to the muon magnetic moment using twisted-mass fermions

CAConstantia AlexandrouSBSimone BacchioPDP. DimopoulosJFJacob FinkenrathRFR. Frezzotti

Cyprus Institute · University of Cyprus · +8 more institutions

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Abstract

We present a lattice determination of the leading-order hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment, ${a}_{\ensuremath{\mu}}^{\mathrm{HVP}}$, in the so-called short and intermediate time-distance windows, ${a}_{\ensuremath{\mu}}^{\mathrm{SD}}$ and ${a}_{\ensuremath{\mu}}^{\mathrm{W}}$, defined by the RBC/UKQCD Collaboration [Phys. Rev. Lett. 121, 022003 (2018)]. We employ gauge ensembles produced by the Extended Twisted Mass Collaboration (ETMC) with ${N}_{f}=2+1+1$ flavors of Wilson-clover twisted-mass quarks with masses of all the dynamical quark flavors tuned close to their physical values. The simulations are carried out at three values of the lattice spacing equal…

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Topics & keywords

Topics
Keywords
  • Anomalous magnetic dipole moment
  • Vacuum polarization
  • Fermion
  • Physics
  • Hadron
  • Muon
  • Magnetic moment
  • Lattice (music)
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