14 papers
The hadronic-vacuum-polarization contribution to the muon anomalous magnetic moment in isospin-symmetric lattice QCD with twisted-mass fermions
C. Alexandrou, S. Bacchio, A. De Santis +18
We present a lattice-QCD calculation of the leading-order hadronic-vacuum-polarization (HVP) contribution to the anomalous magnetic moment of the muon in isospin-symmetric QCD. We…
Looking at radiative corrections to the semileptonic decay-rate ratio
Constantia Alexandrou, Simone Bacchio, Antonio Evangelista +2
We investigate the impact of radiative corrections on the ratio of the semileptonic decay rates . Phenomenological analyses point to sizable radiative effects…
Measuring Mass Splittings in Baryon SU(2) Multiplets
Constantia Alexandrou, Simone Bacchio, Antonio Evangelista +2
The inclusion of isospin-breaking corrections arising from electromagnetic interactions and the up-down quark mass difference is becoming increasingly important in lattice QCD calc…
Inclusive decays from lattice QCD: computational strategy and a first physical result
Alessandro De Santis, Antonio Evangelista, Gael Finauri +16
We present a strategy to compute the inclusive decay rate for the process from first principles in lattice QCD. The physical decay rate is…
Performance of Low Mode Averaging on Twisted-Mass Fermion Ensembles at the physical pion mass point
Constantia Alexandrou, Simone Bacchio, Antonio Evangelista +4
We study the performance of low-mode averaging (LMA) on twisted-mass fermion ensembles at near-physical quark masses, assessing both its theoretical framework and practical cost-ef…
First-principle evaluation of inclusive hadronic decays in QCD+QED
Matteo Di Carlo, Simone Bacchio, Erik Bäske +12
We present a strategy to extend lattice calculations of inclusive hadronic decays from isosymmetric QCD to QCD+QED. The inclusive decay rate can be related to suitable Euclidea…
The smeared -ratio in isoQCD from first-principles lattice simulations
Francesca Margari, Simone Bacchio, Alessandro De Santis +6
The -ratio is a phenomenological observable of great relevance, both in itself and in applications such as the dispersive approach to the muon anomalous magnetic moment. It can…
An update on the HVP contribution to in isoQCD from ETMC
Simone Bacchio, Alessandro De Santis, Antonio Evangelista +7
We present an update on the determination of the leading-order hadronic vacuum polarisation contribution to the muon anomalous magnetic moment in isospin-symmetric QCD by the Exten…
Inclusive semileptonic decays of the meson: Lattice QCD confronts experiments
Alessandro De Santis, Antonio Evangelista, Roberto Frezzotti +13
We present the results of a first-principles theoretical study of the inclusive semileptonic decays of the meson. We performed a state-of-the-art lattice QCD calculation by…
Inclusive semileptonic decays of the meson: A first-principles lattice QCD calculation
Alessandro De Santis, Antonio Evangelista, Roberto Frezzotti +13
We present the results of a first-principles theoretical study of the inclusive semileptonic decays of the meson. We performed a state-of-the-art lattice QCD calculation usin…
Smeared -ratio in isospin symmetric QCD with Low Mode Averaging
Simone Bacchio, Alessandro De Santis, Antonio Evangelista +8
Low Mode Average (LMA) is a technique to improve the quality of the signal-to-noise ratio in the long time separation of Euclidean correlation functions. We report on its beneficia…
Valence leading isospin breaking contributions to
Simone Bacchio, Antonio Evangelista, Roberto Frezzotti +6
By employing the RM123 approach to QCD+QED, we computed the valence quark-connected isospin-breaking corrections to the light, strange and charm contributions at leading order in $…
Strange and charm quark contributions to the muon anomalous magnetic moment in lattice QCD with twisted-mass fermions
C. Alexandrou, S. Bacchio, A. De Santis +15
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 symm…
Inclusive hadronic decay rate of the lepton from lattice QCD: the flavour channel and the Cabibbo angle
C. Alexandrou, S. Bacchio, A. De Santis +13
We present a lattice determination of the inclusive decay rate of the process in which the lepton decays into a generic hadronic state with $\bar…