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Preprint
Report number CERN-TH-2024-197 ; arXiv:2411.08852
Title Strange and charm quark contributions to the muon anomalous magnetic moment in lattice QCD with twisted-mass fermions
Author(s) Extended Twisted Mass Collaboration (ETMC) Collaboration  Mostrar todos os 18 autores
Document contact Contact: arXiv
Imprint 2024-11-13
Number of pages 33
Note 33 pages, 18 figures, 3 tables
Subject category hep-ph ; Particle Physics - Phenomenology ; hep-lat ; Particle Physics - Lattice
Abstract We present a lattice calculation of the Hadronic Vacuum Polarization (HVP) contribution of the strange and charm quarks to the anomalous magnetic moment of the muon in isospin symmetric QCD. We employ the gauge configurations generated by the Extended Twisted Mass Collaboration (ETMC) with Nf=2+1+1 flavors of Wilson-clover twisted-mass quarks at five lattice spacings and at values of the quark mass parameters that are close and/or include the isospin symmetric QCD point of interest. After computing the small corrections necessary to precisely match this point, and carrying out an extrapolation to the continuum limit based on the data at lattice spacings a0.049,0.057,0.068,0.080 fm and spatial lattice sizes up to L7.6 fm, we obtain aμHVP(s)=(53.57±0.63)×1010 and aμHVP(c)=(14.56±0.13)×1010, for the quark-connected strange and charm contributions, respectively. Our findings agree well with the corresponding results by other lattice groups.
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Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)



 


 Record created 2024-11-15, last modified 2024-11-22


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