Search Results - "Bacchio, S"

Lattice QCD determination of the normalization of the leading-twist photon distribution amplitude and susceptibility of the quark condensate by Bacchio, S, Bečirević, D, Gagliardi, G, Sanfilippo, F

“…The normalization of the leading-twist photon distribution amplitude (DA), $f_{\gamma}^{\perp}$, is an important ingredient in the study of exclusive processes…”
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Strange and charm quark contributions to the muon anomalous magnetic moment in lattice QCD with twisted-mass fermions by Alexandrou, C, Bacchio, S, De Santis, A, Evangelista, A, Finkenrath, J, Frezzotti, R, Gagliardi, G, Garofalo, M, Kalntis, N, Kostrzewa, B, Lubicz, V, Pittler, F, Romiti, S, Sanfilippo, F, Simula, S, Tantalo, N, Urbach, C, Wenger, U

“…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…”
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Inclusive hadronic decay rate of the $\tau$ lepton from lattice QCD: the $\bar u s$ flavour channel and the Cabibbo angle by Alexandrou, C, Bacchio, S, De Santis, A, Evangelista, A, Finkenrath, J, Frezzotti, R, Gagliardi, G, Garofalo, M, Kostrzewa, B, Lubicz, V, Romiti, S, Sanfilippo, F, Simula, S, Tantalo, N, Urbach, C, Wenger, U

“…We present a lattice determination of the inclusive decay rate of the process $\tau\mapsto X_{us} \nu_\tau$ in which the $\tau$ lepton decays into a generic…”
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Quark flavor decomposition of the nucleon axial form factors by Alexandrou, C, Bacchio, S, Constantinou, M, Hadjiyiannakou, K, Jansen, K, Koutsou, G

“…Phys. Rev. D 104, 074503 (2021) We present results on the isoscalar form factors including the disconnected contributions, as well as on the strange and charm…”
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Pion Transition Form Factor from Twisted-Mass Lattice QCD and the Hadronic Light-by-Light $\pi^0$-pole Contribution to the Muon $g-2 by Alexandrou, C, Bacchio, S, Bergner, G, Burri, S, Finkenrath, J, Gasbarro, A, Hadjiyiannakou, K, Jansen, K, Kanwar, G, Kostrzewa, B, Koutsou, G, Ottnad, K, Petschlies, M, Pittler, F, Steffens, F, Urbach, C, Wenger, U

“…Phys.Rev.D 108 (2023) 9, 094514 The neutral pion generates the leading pole contribution to the hadronic light-by-light tensor, which is given in terms of the…”
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First moments of the nucleon transverse quark spin densities using lattice QCD by Alexandrou, C, Bacchio, S, Constantinou, M, Dimopoulos, P, Finkenrath, J, Frezzotti, R, Hadjiyiannakou, K, Jansen, K, Kostrzewa, B, Koutsou, G, Spanoudes, G, Urbach, C

“…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…”
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Time windows of the muon HVP from twisted-mass lattice QCD by Alexandrou, C, Bacchio, S, Dimopoulos, P, Finkenrath, J, Frezzotti, R, Gagliardi, G, Garofalo, M, Hadjiyiannakou, K, Kostrzewa, B, Jansen, K, Lubicz, V, Petschlies, M, Sanfilippo, F, Simula, S, Urbach, C, Wenger, U

“…We present a lattice determination of the leading-order hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment, $a_{\mu}^{\rm…”
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Lattice calculation of the short and intermediate time-distance hadronic vacuum polarization contributions to the muon magnetic moment using twisted-mass fermions by Alexandrou, C, Bacchio, S, Dimopoulos, P, Finkenrath, J, Frezzotti, R, Gagliardi, G, Garofalo, M, Hadjiyiannakou, K, Kostrzewa, B, Jansen, K, Lubicz, V, Petschlies, M, Sanfilippo, F, Simula, S, Urbach, C, Wenger, U

“…We present a lattice determination of the leading-order hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment, $a_{\mu}^{\rm…”
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Nucleon strange electromagnetic form factors by Alexandrou, C, Bacchio, S, Constantinou, M, Finkenrath, J, Hadjiyiannakou, K, Jansen, K, Koutsou, G

“…Phys. Rev. D 101, 031501 (2020) The role of the strange quarks on the low-energy interactions of the proton can be probed through the strange electromagnetic…”
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Nucleon axial, tensor and scalar charges and $\sigma$-terms in lattice QCD by Alexandrou, C, Bacchio, S, Constantinou, M, Hadjiyiannakou, K, Jansen, K, Koutsou, G, Aviles-Casco, A. Vaquero

“…Phys. Rev. D 102, 054517 (2020) We determine the nucleon axial, scalar and tensor charges within lattice Quantum Chromodynamics including all contributions…”
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Complete flavor decomposition of the spin and momentum fraction of the proton using lattice QCD simulations at physical pion mass by Alexandrou, C, Bacchio, S, Constantinou, M, Finkenrath, J, Hadjiyiannakou, K, Jansen, K, Koutsou, G, Panagopoulos, H, Spanoudes, G

“…We evaluate the gluon and quark contributions to the spin of the proton using an ensemble of gauge configuration generated at physical pion mass. We compute…”
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Nucleon axial and pseudoscalar form factors from lattice QCD at the physical point by Alexandrou, C, Bacchio, S, Constantinou, M, Dimopoulos, P, Finkenrath, J, Hadjiyiannakou, K, Jansen, K, Koutsou, G, Kostrzewa, B, Leontiou, T, Urbach, C

“…Phys. Rev. D 103, 034509 (2021) We compute the nucleon axial and induced pseudoscalar form factors using three ensembles of gauge configurations, generated…”
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Ratio of kaon and pion leptonic decay constants with $N_f = 2 + 1 + 1$ Wilson-clover twisted-mass fermions by Alexandrou, C, Bacchio, S, Bergner, G, Dimopoulos, P, Finkenrath, J, Frezzotti, R, Garofalo, M, Kostrzewa, B, Koutsou, G, Labus, P, Sanfilippo, F, Simula, S, Ueding, M, Urbach, C, Wenger, U

“…We present a determination of the ratio of kaon and pion leptonic decay constants in isosymmetric QCD (isoQCD), $f_K / f_\pi$, making use of the gauge…”
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Moments of nucleon generalized parton distributions from lattice QCD simulations at physical pion mass by Alexandrou, C, Bacchio, S, Constantinou, M, Dimopoulos, P, Finkenrath, J, Frezzotti, R, Hadjiyiannakou, K, Jansen, K, Kostrzewa, B, Koutsou, G, Lauer, C, Urbach, C

“…Phys. Rev. D 101, 034519 (2020) We present results for the moments of nucleon isovector vector and axial generalised parton distribution functions computed…”
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Quark masses using twisted mass fermion gauge ensembles by Alexandrou, C, Bacchio, S, Bergner, G, Constantinou, M, Di Carlo, M, Dimopoulos, P, Finkenrath, J, Fiorenza, E, Frezzotti, R, Garofalo, M, Hadjiyiannakou, K, Kostrzewa, B, Koutsou, G, Jansen, K, Lubicz, V, Mangin-Brinet, M, Manigrasso, F, Martinelli, G, Papadiofantous, E, Pittler, F, Rossi, G. C, Sanfilippo, F, Simula, S, Tarantino, C, Todaro, A, Urbach, C, Wenger, U

“…We present a calculation of the up, down, strange and charm quark masses performed within the lattice QCD framework. We use the twisted mass fermion action and…”
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Determination of the light, strange and charm quark masses using twisted mass fermions by Alexandrou, C, Bacchio, S, Bergner, G, Constantinou, M, Di Carlo, M, Dimopoulos, P, Finkenrath, J, Fiorenza, E, Frezzotti, R, Garofalo, M, Hadjiyiannakou, K, Kostrzewa, B, Koutsou, G, Jansen, K, Lubicz, V, Mangin-Brinet, M, Manigrasso, F, Martinelli, G, Pittler, F, Rossi, G. C, Sanfilippo, F, Simula, S, Tarantino, C, Todaro, A, Urbach, C, Wenger, U

“…We present results for the light, strange and charm quark masses using $N_f=2+1+1$ twisted mass fermion ensembles at three values of the lattice spacing,…”
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Proton and neutron electromagnetic form factors from lattice QCD by Alexandrou, C, Bacchio, S, Constantinou, M, Finkenrath, J, Hadjiyiannakou, K, Jansen, K, Koutsou, G, Casco, A. Vaquero Aviles

“…Phys. Rev. D 100, 014509 (2019) The electromagnetic form factors of the proton and the neutron are computed within lattice QCD using simulations with quarks…”
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The pion vector form factor from Lattice QCD at the physical point by Alexandrou, C, Bacchio, S, Dimopoulos, P, Finkenrath, J, Frezzotti, R, Jansen, K, Kostrzewa, B, Mangin-Brinet, M, Sanfilippo, F, Simula, S, Urbach, C, Wenger, U

“…Phys. Rev. D 97, 014508 (2018) We present an investigation of the electromagnetic pion form factor, $F_\pi(Q^2)$, at small values of the four-momentum transfer…”
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Isospin-0 $\pi\pi$ scattering from twisted mass lattice QCD by Liu, L, Bacchio, S, Dimopoulos, P, Finkenrath, J, Frezzotti, R, Helmes, C, Jost, C, Knippschild, B, Kostrzewa, B, Liu, H, Ottnad, K, Petschlies, M, Urbach, C, Werner, M

“…We present results for the isospin-0 $\pi\pi$ s-wave scattering length calculated in twisted mass lattice QCD. We use three $N_f = 2$ ensembles with unitary…”
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Isospin-0 $\pi\pi$ s-wave scattering length from twisted mass lattice QCD by Liu, L, Bacchio, S, Dimopoulos, P, Finkenrath, J, Frezzotti, R, Helmes, C, Jost, C, Knippschild, B, Kostrzewa, B, Liu, H, Ottnad, K, Petschlies, M, Urbach, C, Werner, M

“…Phys. Rev. D 96, 054516 (2017) We present results for the isospin-0 $\pi\pi$ s-wave scattering length calculated with Osterwalder-Seiler valence quarks on…”
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