Gagliardi, G.G.GagliardiAlexandrou, C.C.AlexandrouBacchio, S.S.BacchioDimopoulos, P.P.DimopoulosFinkenrath, J.J.FinkenrathFrezzotti, R.R.FrezzottiGarofalo, M.M.GarofaloHadjiyiannakou, K.K.HadjiyiannakouKostrzewa, B.B.KostrzewaJansen, K.K.JansenLubicz, V.V.LubiczPetschlies, M.M.PetschliesSanfilippo, F.F.SanfilippoSimula, S.S.SimulaUrbach, C.C.UrbachWenger, UrsUrsWenger0000-0002-7754-95902024-10-252024-10-252022https://boris-portal.unibe.ch/handle/20.500.12422/164997We present a lattice determination of the leading-order hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment, aHVPμ , in the so-called short and intermediate time-distance windows, aSDμ and aWμ . We employ gauge ensembles produced by the Extended Twisted Mass Collaboration (ETMC) with Nf=2+1+1 flavours of Wilson-clover twisted-mass quarks with masses of all the dynamical quark flavours tuned close to their physical values. The simulations are carried out at three values of the lattice spacing equal to ≃0.057,0.068 and 0.080 fm with spatial lattice sizes up to L≃7.6 ~fm. For the short distance window we obtain aSDμ=69.27(34)⋅10−10 , in agreement with the dispersive determination based on experimental e+e− data. For the intermediate window we get instead aWμ=236.3(1.3)⋅10−10 , which is consistent with recent determinations by other lattice collaborations, but disagrees with the dispersive determination at the level of 3.6σ .en500 - Science::530 - Physicsconference_item10.48350/17988310.22323/1.430.0310