G. Gagliardi

activity

20212025

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

187 citations · 356 across the 15 of their papers we have counts for

collaborators

16 papers

hep-lat2025

Theoretical framework for lattice QCD computations of $B \to K ℓ^{+} ℓ^{-}$ and $B ˉ_{s} \to ℓ^{+} ℓ^{-} γ$ decays rates, including contributions from charming penguin diagrams

R. Frezzotti, G. Gagliardi, V. Lubicz +6

We develop a strategy for computing the $B \to K ℓ^{+} ℓ^{-}$ and $B ˉ_{s} \to γ ℓ^{+} ℓ^{-}$ decay amplitudes using lattice QCD (where $ℓ^{\pm}$ are charged leptons). We focus on…

hep-ph2025★ 134 cited

The anomalous magnetic moment of the muon in the Standard Model: an update

R. Aliberti, T. Aoyama, E. Balzani +232

We present the current Standard Model (SM) prediction for the muon anomalous magnetic moment, $a_{μ}$ , updating the first White Paper (WP20) [1]. The pure QED and electroweak contrib…

hep-lat2025

Lattice QCD determination of the radiative decay rates $h_{c} \to η_{c} γ$ and $h_{b} \to η_{b} γ$

D. Bečirević, R. Di Palma, R. Frezzotti +4

We present the results of our lattice QCD computation of the hadronic matrix elements relevant to the $h_{c} \to η_{c} γ$ and $h_{b} \to η_{b} γ$ decays by using the gauge configuratio…

hep-lat2025★ 5 cited

Kaon radiative leptonic decay rates from lattice QCD simulations at the physical point

R. Di Palma, R. Frezzotti, G. Gagliardi +6

We present a lattice QCD calculation of the radiative leptonic decay rates of the kaon, improving upon our previous work, arXiv:2006.05358. Our analysis uses gauge ensembles genera…

hep-lat2024

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…

hep-lat2024

Lattice QCD determination of the normalization of the leading-twist photon distribution amplitude and susceptibility of the quark condensate

S. Bacchio, D. Bečirević, G. Gagliardi +1

The normalization of the leading-twist photon distribution amplitude (DA), $f_{γ}^{⊥}$ , is an important ingredient in the study of exclusive processes involving the photon emissi…

hep-lat2024

Inclusive hadronic decay rate of the $τ$ lepton from lattice QCD: the $u ˉ s$ 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 $τ \mapsto X_{u s} ν_{τ}$ in which the $τ$ lepton decays into a generic hadronic state $X_{u s}$ with $\bar…

hep-lat2024

The $B_{s} \to μ^{+} μ^{-} γ$ decay rate at large $q^{2}$ from lattice QCD

R. Frezzotti, G. Gagliardi, V. Lubicz +5

We determine, by means of lattice QCD calculations, the local form factors describing the $B_{s} \to μ^{+} μ^{-} γ$ decay. For this analysis we make use of the gauge configurations pr…

hep-lat2023★ 1 cited

Spectral-function determination of complex electroweak amplitudes with lattice QCD

R. Frezzotti, G. Gagliardi, V. Lubicz +3

We present a novel method to determine on the lattice both the real and imaginary parts of complex electroweak amplitudes involving two external currents and a single hadron or the…

hep-lat2023

Lattice calculation of the $D_{s}$ meson radiative form factors over the full kinematical range

R. Frezzotti, G. Gagliardi, V. Lubicz +6

We compute the structure-dependent axial and vector form factors for the radiative leptonic decays $D_{s} \to ℓ ν_{ℓ} γ$ , where $ℓ$ is a charged lepton, as functions of the energ…

hep-lat2022

Time windows of the muon HVP from twisted-mass lattice QCD

C. Alexandrou, S. Bacchio, P. Dimopoulos +13

We present a lattice determination of the leading-order hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment, $a_{μ}^{HVP}$ , in the so-called sho…

hep-lat2022★ 187 cited

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

C. Alexandrou, S. Bacchio, P. Dimopoulos +13

We present a lattice determination of the leading-order hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment, $a_{μ}^{HVP}$ , in the so-called sho…

hep-lat2022★ 7 cited

Lattice calculation of the pion mass difference $M_{π^{+}} - M_{π^{0}}$ at order $O (α_{e m})$

R. Frezzotti, G. Gagliardi, V. Lubicz +3

We present a lattice calculation of the charged/neutral pion mass difference $M_{π^{+}} - M_{π^{0}}$ at order $O (α_{e m})$ using the gauge configurations produced by the Ext…

hep-lat2022★ 13 cited

Virtual Photon Emission in Leptonic Decays of Charged Pseudoscalar Mesons

G. Gagliardi, V. Lubicz, G. Martinelli +5

We study the radiative leptonic decays $P \to ℓ ν_{ℓ} ℓ^{' +} ℓ^{' -}$ , where $P$ is a pseudoscalar meson and $ℓ$ and $ℓ^{'}$ are charged leptons. In su…

hep-lat2021★ 7 cited

First direct lattice calculation of the chiral perturbation theory low-energy constant $ℓ_{7}$

R. Frezzotti, G. Gagliardi, V. Lubicz +3

We evaluate by means of lattice QCD calculations the low-energy constant $ℓ_{7}$ which parametrizes strong isospin effects at NLO in $SU (2)$ chiral perturbation theory. Amo…

hep-lat2021★ 2 cited

Rotated twisted-mass: a convenient regularization scheme for isospin breaking QCD and QED lattice calculations

R. Frezzotti, G. Gagliardi, V. Lubicz +2

We propose a scheme of lattice twisted-mass fermion regularization which is particularly convenient for application to isospin breaking (IB) QCD and QED calculations, based in part…

Theoretical framework for lattice QCD computations of B→Kℓ+ℓ− and Bˉs​→ℓ+ℓ−γ decays rates, including contributions from charming penguin diagrams

The anomalous magnetic moment of the muon in the Standard Model: an update

Lattice QCD determination of the radiative decay rates hc​→ηc​γ and hb​→ηb​γ

Kaon radiative leptonic decay rates from lattice QCD simulations at the physical point

Strange and charm quark contributions to the muon anomalous magnetic moment in lattice QCD with twisted-mass fermions

Lattice QCD determination of the normalization of the leading-twist photon distribution amplitude and susceptibility of the quark condensate

Inclusive hadronic decay rate of the τ lepton from lattice QCD: the uˉs flavour channel and the Cabibbo angle

The Bs​→μ+μ−γ decay rate at large q2 from lattice QCD

Spectral-function determination of complex electroweak amplitudes with lattice QCD

Lattice calculation of the Ds​ meson radiative form factors over the full kinematical range

Time windows of the muon HVP from twisted-mass lattice QCD

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

Lattice calculation of the pion mass difference Mπ+​−Mπ0​ at order O(αem​)

Virtual Photon Emission in Leptonic Decays of Charged Pseudoscalar Mesons

First direct lattice calculation of the chiral perturbation theory low-energy constant ℓ7​

Rotated twisted-mass: a convenient regularization scheme for isospin breaking QCD and QED lattice calculations

Theoretical framework for lattice QCD computations of $B \to K ℓ^{+} ℓ^{-}$ and $B ˉ_{s} \to ℓ^{+} ℓ^{-} γ$ decays rates, including contributions from charming penguin diagrams

Lattice QCD determination of the radiative decay rates $h_{c} \to η_{c} γ$ and $h_{b} \to η_{b} γ$

Inclusive hadronic decay rate of the $τ$ lepton from lattice QCD: the $u ˉ s$ flavour channel and the Cabibbo angle

The $B_{s} \to μ^{+} μ^{-} γ$ decay rate at large $q^{2}$ from lattice QCD

Lattice calculation of the $D_{s}$ meson radiative form factors over the full kinematical range

Lattice calculation of the pion mass difference $M_{π^{+}} - M_{π^{0}}$ at order $O (α_{e m})$

First direct lattice calculation of the chiral perturbation theory low-energy constant $ℓ_{7}$