187 citations · 1.4k across the 60 of their papers we have counts for
62 papers · 1 filter
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…
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…
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…
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 Wilson twisted-mass cl…
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…
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…
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 Wilson…
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…
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 2+1+1 twisted mass fermion ensembles with all quark masses tuned to approximately their physical values…
Pion Transition Form Factor from Twisted-Mass Lattice QCD and the Hadronic Light-by-Light -pole Contribution to the Muon
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}_{…
Lattice calculation of the R-ratio smeared with Gaussian kernel
Constantia Alexandrou, Simone Bacchio, Alessandro De Santis +15
The ratio of the cross-sections for hadrons and is a valuable energy-dependent probe of the hadronic sector of the Standard Model. Moreover, t…
Pseudoscalar-pole contributions to the muon 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 . We report on our computation of the transit…
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…
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, , in the so-called sho…
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…
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…
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 -ratio between the cross-section into hadrons and that into muons. By using the method of Ref.[1], that a…
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…
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, , in the so-called sho…
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…
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…
Pion-pole contribution to HLbL from twisted mass lattice QCD at the physical point
Sebastian Burri, Constantia Alexandrou, Simone Bacchio +13
We report on our computation of the pion transition form factor from twisted mass lattice QCD in order to determine the numerically dominant light…
Lattice QCD results for the topological up-quark mass contribution: too small to rescue the solution to the strong CP problem
Constantia Alexandrou, Jacob Finkenrath, Lena Funcke +4
A vanishing Yukawa coupling of the up quark could in principle solve the strong CP problem. To render this solution consistent with current algebra results, the up quark must recei…