75 citations · 709 across the 50 of their papers we have counts for
58 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…
Do AI Agents Gossip? Evaluative Talk in Human and AI-Agent Online Communities
Yong-Hui Hua, Chih-Han Lin, Shu-Kai Hsieh
Gossip, defined as evaluative talk about absent third parties, is widely seen as a uniquely human social practice. This study examines whether comparable discourse emerges spontane…
The origin of excited states of the baryon at the SU(3) point from Lattice QCD
Javier Suarez Sucunza, Thomas Luu, Maxim Mai +3
In this work we determine the finite-volume lattice QCD spectrum at the flavor symmetric point in the meson-baryon singlet and octet irreducible representations. W…
Nucleon strange electromagnetic form factors using twisted-mass fermions at the physical point
Constantia Alexandrou, Simone Bacchio, Mathis Bode +7
We present the strange electromagnetic form factors of the nucleon using lattice QCD with twisted mass clover-improved fermions and quark masses tuned to their physical…
Strangeness of nucleons from lattice QCD
Constantia Alexandrou, Simone Bacchio, Mathis Bode +7
We present the strange electromagnetic form factors of the nucleon using lattice QCD simulations with degenerate light, a strange, and a charm quark in the sea with masses tuned to…
Nucleon strange electromagnetic form factors from lattice QCD
Constantia Alexandrou, Simone Bacchio, Mathis Bode +7
We present the nucleon strange electromagnetic form factors using four lattice QCD ensembles with twisted mass clover-improved fermions and quark masses tuned to approx…
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…
Dirac mode localization in QCD near the crossover temperature
Matteo Giordano, Tamas G. Kovacs, Ferenc Pittler
We study the localization properties of the low-lying Dirac eigenmodes in QCD near the crossover temperature, using stout-smeared staggered fermions and Symanzik-improved gauge act…
Universal parameters of the , the and their isospin partners from a combined analysis of Lattice QCD and experimental results
Ferenc Pittler, Maxim Mai, Ulf-G. Meißner +4
We perform a global analysis of lattice and experimental data on negative-strangeness meson-baryon scattering using a large set of variations of the theoretical framework based on…
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…
Investigation of contributions to nucleon matrix elements
Constantia Alexandrou, Giannis Koutsou, Yan Li +2
We investigate an improved method to extract nucleon matrix elements from lattice 3-point functions using a generalized eigenvalue problem (GEVP) with nucleon and pion-nucleon inte…
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…
Investigation of pion-nucleon contributions to nucleon matrix elements
Constantia Alexandrou, Giannis Koutsou, Yan Li +2
We investigate contributions of excited states to nucleon matrix elements computed in lattice QCD by employing, in addition to the standard nucleon interpolating operator, pion-nuc…
Investigation of two-particle contributions to nucleon matrix elements
Constantia Alexandrou, Giannis Koutsou, Yan Li +2
We investigate contributions of excited states to nucleon matrix elements by studying the two- and three-point functions using nucleon and pion-nucleon interpolating fields. This s…
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}_{…
Elastic Nucleon-Pion scattering amplitudes in the channel at physical pion mass from Lattice QCD
Constantia Alexandrou, Simone Bacchio, Giannis Koutsou +4
We present an investigation of pion-nucleon elastic scattering in the channel using lattice QCD with degenerate up and down, strange and c…
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…
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…
Elastic scattering in the channel
Constantia Alexandrou, Kyriakos Hadjiannakou, Giannis Koutsou +4
We present our study of scattering in the iso-spin channel for the first time at the physical point. The calculation is performed using flavors of twisted…
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…
Determination of the light, strange and charm quark masses using twisted mass fermions
C. Alexandrou, S. Bacchio, G. Bergner +23
We present results for the light, strange and charm quark masses using twisted mass fermion ensembles at three values of the lattice spacing, including two ensembles si…
Quark and gluon momentum fractions in the pion from lattice QCD
Constantia Alexandrou, Simone Bacchio, Georg Bergner +11
We perform the first full decomposition of the pion momentum into its gluon and quark contributions. We employ an ensemble generated by the Extended Twisted Mass Collaboration with…
Quark masses using twisted mass fermion gauge ensembles
C. Alexandrou, S. Bacchio, G. Bergner +24
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 carry out simulation…