B. Kostrzewa

activity

20112026

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 · 1.4k across the 60 of their papers we have counts for

collaborators

65 papers

hep-lat2026

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…

hep-lat2026

Inclusive $B ˉ_{s} \mapsto X_{s ˉ c} ℓ ν ˉ$ 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 $B ˉ_{s} \mapsto X_{s ˉ c} ℓ ν ˉ$ from first principles in lattice QCD. The physical decay rate is…

hep-lat2025

Inclusive semileptonic decays of the $D_{s}$ 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 $D_{s}$ meson. We performed a state-of-the-art lattice QCD calculation by…

hep-lat2025

Inclusive semileptonic decays of the $D_{s}$ 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 $D_{s}$ meson. We performed a state-of-the-art lattice QCD calculation usin…

cs.DC2025★ 6 cited

Energy Efficiency trends in HPC: what high-energy and astrophysicists need to know

Estela Suarez, Jorge Amaya, Martin Frank +4

The growing energy demands of HPC systems have made energy efficiency a critical concern for system developers and operators. However, HPC users are generally less aware of how the…

hep-lat2025

Quark and gluon momentum fractions in the pion and in the kaon

Constantia Alexandrou, Simone Bacchio, Martha Constantinou +9

We present results on the momentum fraction carried by quarks and gluons in the pion and the kaon. We employ three gauge ensembles generated with $N_{f} = 2 + 1 + 1$ Wilson twisted-mass cl…

hep-lat2025

Isovector axial and pseudoscalar form factors from twisted mass lattice QCD at the physical point

Constantia Alexandrou, Simone Bacchio, Martha Constantinou +6

We present the isovector axial, induced pseudoscalar, and pseudoscalar form factors of the nucleon using three twisted-mass fermion ensembles with degenerate up- and down-, strange…

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★ 1 cited

Quark and gluon momentum fractions in the pion and in the kaon

Constantia Alexandrou, Simone Bacchio, Martha Constantinou +9

We present the full decomposition of the momentum fraction carried by quarks and gluons in the pion and the kaon. We employ three gauge ensembles generated with $N_{f} = 2 + 1 + 1$ Wilson…

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-lat2023★ 1 cited

Nucleon axial and pseudoscalar form factors using twisted-mass fermion ensembles at the physical point

Constantia Alexandrou, Simone Bacchio, Martha Constantinou +6

We compute the nucleon axial and pseudoscalar form factors using three $N_{f} =$ 2+1+1 twisted mass fermion ensembles with all quark masses tuned to approximately their physical values…

hep-lat2023★ 13 cited

Pion Transition Form Factor from Twisted-Mass Lattice QCD and the Hadronic Light-by-Light $π^{0}$ -pole Contribution to the Muon $g - 2$

C. Alexandrou, S. Bacchio, G. Bergner +14

The neutral pion generates the leading pole contribution to the hadronic light-by-light tensor, which is given in terms of the nonperturbative transition form factor $\mathcal{F}_{…

hep-lat2022

Lattice calculation of the R-ratio smeared with Gaussian kernel

Constantia Alexandrou, Simone Bacchio, Alessandro De Santis +15

The ratio $R (E)$ of the cross-sections for $e^{+} e^{-} \to$ hadrons and $e^{+} e^{-} \to μ^{+} μ^{-}$ is a valuable energy-dependent probe of the hadronic sector of the Standard Model. Moreover, t…

hep-ph2022

Short \& intermediate distance HVP contributions to muon g-2: SM (lattice) prediction versus $e^{+} e^{-}$ annihilation data

Constantia Alexandrou, Simone Bacchio, Petros Dimopoulos +13

We present new lattice results of the ETM Collaboration, obtained from extensive simulations of lattice QCD with dynamical up, down, strange and charm quarks at physical mass value…

hep-lat2022★ 1 cited

Pseudoscalar-pole contributions to the muon $g - 2$ at the physical point

Sebastian Burri, Gurtej Kanwar, Constantia Alexandrou +14

Pseudoscalar-pole diagrams are an important component of estimates of the hadronic light-by-light (HLbL) contribution to the muon $g - 2$ . We report on our computation of the transit…

hep-lat2022★ 1 cited

Lattice gauge ensembles and data management

Gunnar Bali, Ryan Bignell, Anthony Francis +10

The generation of ensembles of gauge configurations is a considerable expense. The preservation and curation of these ensembles constitutes a valuable shared resource for the latti…

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★ 1 cited

Disconnected contribution to the LO HVP term of muon g-2 from ETMC

Constantia Alexandrou, Simone Bacchio, Petros Dimopoulos +13

We present a lattice determination of the disconnected contributions to the leading-order hadronic vacuum polarization (HVP) to the muon anomalous magnetic moment in the so-called…

hep-lat2022★ 2 cited

Twisted mass ensemble generation on GPU machines

Bartosz Kostrzewa, Simone Bacchio, Jacob Finkenrath +4

We present how we ported the Hybrid Monte Carlo implementation in the tmLQCD software suite to GPUs through offloading its most expensive parts to the QUDA library. We discuss our…

hep-lat2022★ 42 cited

Probing the energy-smeared R-ratio on the lattice

Constantia Alexandrou, Simone Bacchio, Alessandro De Santis +15

We present a first-principles lattice QCD investigation of the $R$ -ratio between the $e^{+} e^{-}$ cross-section into hadrons and that into muons. By using the method of Ref.[1], that a…

hep-lat2022

Nucleon transverse quark spin densities

Constantia Alexandrou, Simone Bacchio, Martha Constantinou +9

We present a calculation of the Mellin moments of the nucleon transverse quark spin densities extracted from the unpolarized and transversity generalized form factors. We use three…

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★ 35 cited

First moments of the nucleon transverse quark spin densities using lattice QCD

C. Alexandrou, S. Bacchio, M. Constantinou +9

We present a calculation of the Mellin moments of the transverse quark spin densities in the nucleon using lattice QCD. The densities are extracted from the unpolarized and transve…

hep-lat2022

Twisted mass gauge ensembles at physical values of the light, strange and charm quark masses

Jacob Finkenrath, Constantia Alexandrou, Simone Bacchio +9

Lattice QCD simulations directly at physical masses of dynamical light, strange and charm quarks are highly desirable especially to remove systematic errors due to chiral extrapola…

The hadronic-vacuum-polarization contribution to the muon anomalous magnetic moment in isospin-symmetric lattice QCD with twisted-mass fermions

Inclusive Bˉs​↦Xsˉc​ℓνˉ decays from lattice QCD: computational strategy and a first physical result

Inclusive semileptonic decays of the Ds​ meson: Lattice QCD confronts experiments

Inclusive semileptonic decays of the Ds​ meson: A first-principles lattice QCD calculation

Energy Efficiency trends in HPC: what high-energy and astrophysicists need to know

Quark and gluon momentum fractions in the pion and in the kaon

Isovector axial and pseudoscalar form factors from twisted mass lattice QCD at the physical point

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

Quark and gluon momentum fractions in the pion and in the kaon

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

Nucleon axial and pseudoscalar form factors using twisted-mass fermion ensembles at the physical point

Pion Transition Form Factor from Twisted-Mass Lattice QCD and the Hadronic Light-by-Light π0-pole Contribution to the Muon g−2

Lattice calculation of the R-ratio smeared with Gaussian kernel

Short \& intermediate distance HVP contributions to muon g-2: SM (lattice) prediction versus e+e− annihilation data

Pseudoscalar-pole contributions to the muon g−2 at the physical point

Lattice gauge ensembles and data management

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

Disconnected contribution to the LO HVP term of muon g-2 from ETMC

Twisted mass ensemble generation on GPU machines

Probing the energy-smeared R-ratio on the lattice

Nucleon transverse quark spin densities

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

First moments of the nucleon transverse quark spin densities using lattice QCD

Twisted mass gauge ensembles at physical values of the light, strange and charm quark masses

Inclusive $B ˉ_{s} \mapsto X_{s ˉ c} ℓ ν ˉ$ decays from lattice QCD: computational strategy and a first physical result

Inclusive semileptonic decays of the $D_{s}$ meson: Lattice QCD confronts experiments

Inclusive semileptonic decays of the $D_{s}$ meson: A first-principles lattice QCD calculation

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

Pion Transition Form Factor from Twisted-Mass Lattice QCD and the Hadronic Light-by-Light $π^{0}$ -pole Contribution to the Muon $g - 2$

Short \& intermediate distance HVP contributions to muon g-2: SM (lattice) prediction versus $e^{+} e^{-}$ annihilation data

Pseudoscalar-pole contributions to the muon $g - 2$ at the physical point