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HVP contribution of the light quarks to the muon $(g - 2)$ including isospin-breaking corrections with Twisted-Mass fermions

We present a preliminary lattice calculation of the leading-order electromagnetic and strong isospin-breaking corrections to the Hadronic Vacuum Polarization (HVP) contribution of the light quarks to the anomalous magnetic moment of the muon. The results are obtained in the quenched-$QED$ approximat...

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Detalles Bibliográficos
Autores principales: Giusti, Davide, Lubicz, Vittorio, Martinelli, Guido, Sanfilippo, Francesco, Simula, Silvano, Tarantino, Cecilia
Lenguaje:eng
Publicado: SISSA 2018
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.334.0140
http://cds.cern.ch/record/2682876
Descripción
Sumario:We present a preliminary lattice calculation of the leading-order electromagnetic and strong isospin-breaking corrections to the Hadronic Vacuum Polarization (HVP) contribution of the light quarks to the anomalous magnetic moment of the muon. The results are obtained in the quenched-$QED$ approximation using the $QCD$ gauge configurations generated by the European Twisted Mass Collaboration (ETMC) with $N_f = 2 + 1 + 1$ dynamical quarks, at three values of the lattice spacing varying from $0.089$ to $0.062 ~ \mbox{fm}$, at several lattice volumes and with pion masses in the range $M_\pi \simeq 220 \div 490 ~ \mbox{MeV}$.