University of Cyprus

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19922026

most citedCombined Measurement of the Higgs Boson Mass in

pp

Collisions at

s = 7

and 8 TeV with the ATLAS and CMS Experiments

1.4k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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327 papers · 1 filter

hep-lat2026

Spin and momentum fraction carried by partons in the nucleon

Constantia Alexandrou, Simone Bacchio, Jacob Finkenrath +6

We determine the momentum fraction and angular momentum carried by quarks and gluons in the proton in lattice QCD. We use four ensembles simulated with up, down, strange and charm…

hep-lat2026

Nucleon unpolarized second Mellin moments using lattice QCD ensembles with physical quark masses and in the continuum limit

Constantia Alexandrou, Simone Bacchio, Jacob Finkenrath +6

We compute the matrix elements of the energy-momentum tensor of the nucleon using four ensembles of twisted mass clover-improved fermions with the up, down, strange and charm quark…

hep-lat2026

Higher Mellin Moments of the Unpolarized PDF of the Pion and the Kaon from Lattice QCD

Constantia Alexandrou, Simone Bacchio, Priyajit Jana +6

We present results on the Mellin moments of the unpolarized parton distribution function (PDF) of the pion and kaon up to the fourth order. The computation is done using one $N_f=2…

hep-lat2026

Hadron Structure from lattice QCD in the context of the Electron-Ion Collider

Constantia Alexandrou

Hadron structure calculations using lattice Quantum Chromodynamics (QCD) have advanced significantly in recent years. Results for charges, form factors, and lower Mellin moments ca…

hep-lat2025

Proton and neutron electromagnetic form factors from lattice QCD in the continuum limit

Constantia Alexandrou, Simone Bacchio, Giannis Koutsou +2

We compute the electromagnetic form factors of the proton and neutron using lattice QCD. We employ $N_{f}$ =2+1+1 twisted mass clover-improved fermions with quark masses tune…

hep-lat2025★ 8 cited

Lattice study of $cc u ˉ s ˉ$ tetraquark channel in $D^{()} D_{s}^{()}$ scattering

Tanishk Shrimal, Sara Collins, Priyajit Jana +2

We present the first lattice QCD determination of coupled $D D_{s}^{*}$ and $D^{*} D_{s}$ scattering amplitudes in the $J^{P} = 1^{+}$ channel and elastic $D D_{s}$ scattering amplitude in the $J…

hep-lat2025★ 1 cited

Perturbative determination of $O (am)$ improvement on the QCD running coupling

Marios Costa, Demetrianos Gavriel, Haralambos Panagopoulos +1

We present the perturbative results of the discretization errors proportional to the quark mass ( $O (am)$ ) on the QCD running coupling within lattice perturbation theory.…

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★ 2 cited

Proton and neutron electromagnetic form factors using $N_{f}$ =2+1+1 twisted-mass fermions with physical values of the quark masses

Constantia Alexandrou, Simone Bacchio, Giannis Koutsou +2

We compute the electromagnetic form factors of the proton and neutron using lattice QCD with $N_{f} = 2 + 1 + 1$ twisted mass clover-improved fermions and quark masses tuned to their…

hep-lat2025

Nucleon axial, tensor, and scalar charges and $σ$ -terms in lattice QCD

Constantia Alexandrou, Simone Bacchio, Jacob Finkenrath +4

We determine the nucleon axial, scalar and tensor charges at the continuum limit by analyzing three $N_{f} = 2 + 1 + 1$ twisted mass fermion ensembles with all quark masses tuned to approx…

hep-lat2024

Nucleon charges and $σ$ -terms in lattice QCD

C. Alexandrou, S. Bacchio, J. Finkenrath +4

We determine the nucleon axial, scalar and tensor charges and the nucleon $σ$ -terms using twisted mass fermions. We employ three ensembles with approximately equal physical volume…

hep-lat2024

Nucleon Transversity from lattice QCD

Constantia Alexandrou

We give a brief overview of recent progress in lattice QCD simulations that is enabling precision studies of the three-dimensional structure of the nucleon. We present results on n…

hep-lat2024★ 8 cited

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…

hep-lat2024

Towards the determination of the 3-dimensional structure of the proton using lattice QCD simulations

Constantia Alexandrou, Simone Bacchio

State-of-the-art lattice QCD simulations enable the evaluation of nucleon form factors and Mellin moments with controlled systematics, yielding results with unprecedented accuracy.…

hep-lat2023★ 30 cited

Shallow Bound States and Hints for Broad Resonances with Quark Content $b ˉ c ˉ u d$ in $B$ - $D ˉ$ and $B^{*}$ - $D ˉ$ Scattering from Lattice QCD

Constantia Alexandrou, Jacob Finkenrath, Theodoros Leontiou +3

We present the first determination of the energy dependence of the $B$ - $D ˉ$ and $B^{*}$ - $D ˉ$ isospin-0, $S$ -wave scattering amplitudes both below and above the thresholds u…

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-lat2023★ 6 cited

Elastic Nucleon-Pion scattering amplitudes in the $Δ$ 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 $I (J^{P}) = \frac{3}{2} (\frac{3}{2}^{+})$ channel using lattice QCD with degenerate up and down, strange and c…

hep-lat2023★ 14 cited

Nonperturbative renormalization of asymmetric staple-shaped operators in twisted mass lattice QCD

Constantia Alexandrou, Simone Bacchio, Krzysztof Cichy +8

Staple-shaped Wilson line operators are necessary for the study of transverse momentum-dependent parton distribution functions (TMDPDFs) in lattice QCD and beyond. In this work, we…

hep-lat2022

Tuning of QCD+QED simulations with C $^{⋆}$ boundary conditions

Anian Altherr, Lucius Bushnaq, Isabel Campos +10

We give an update on the ongoing effort of the RC $^{⋆}$ collaboration to generate fully dynamical QCD+QED ensembles with C $^{⋆}$ boundary conditions using the openQ $^{⋆}$ D co…

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★ 14 cited

The $η \to γ^{} γ^{}$ transition form factor and the hadronic light-by-light $η$ -pole contribution to the muon $g - 2$ from lattice QCD

Constantia Alexandrou, Simone Bacchio, Sebastian Burri +11

We calculate the double-virtual $η \to γ^{*} γ^{*}$ transition form factor $F_{η \to γ^{*} γ^{*}} (q_{1}^{2}, q_{2}^{2})$ from first principles using a lattice QCD simulation with $N…

hep-lat2022★ 3 cited

Nonperturbative renormalization of the supercurrent in $N = 1$ Supersymmetric Yang-Mills Theory

Georg Bergner, Marios Costa, Haralambos Panagopoulos +3

In this work, we study the nonperturbative renormalization of the supercurrent operator in $N = 1$ Supersymmetric Yang-Mills (SYM) theory, using a gauge-invariant renorma…

hep-lat2022★ 41 cited

Topological susceptibility of $N_{f} = 2 + 1$ QCD from staggered fermions spectral projectors at high temperatures

Andreas Athenodorou, Claudio Bonanno, Claudio Bonati +7

We compute the topological susceptibility of $N_{f} = 2 + 1$ QCD with physical quark masses in the high-temperature phase, using numerical simulations of the theory discretized on a spac…

hep-lat2022★ 8 cited

Improved renormalization scheme for nonlocal operators

Martha Constantinou, Haralambos Panagopoulos

In this paper we present an improved RI-type prescription appropriate for the non-perturbative renormalization of gauge invariant nonlocal operators. In this prescription, the non-…

Spin and momentum fraction carried by partons in the nucleon

Nucleon unpolarized second Mellin moments using lattice QCD ensembles with physical quark masses and in the continuum limit

Higher Mellin Moments of the Unpolarized PDF of the Pion and the Kaon from Lattice QCD

Hadron Structure from lattice QCD in the context of the Electron-Ion Collider

Proton and neutron electromagnetic form factors from lattice QCD in the continuum limit

Lattice study of ccuˉsˉ tetraquark channel in D(∗)Ds(∗)​ scattering

Perturbative determination of O(am) improvement on the QCD running coupling

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

Proton and neutron electromagnetic form factors using Nf​=2+1+1 twisted-mass fermions with physical values of the quark masses

Nucleon axial, tensor, and scalar charges and σ-terms in lattice QCD

Nucleon charges and σ-terms in lattice QCD

Nucleon Transversity from lattice QCD

Investigation of pion-nucleon contributions to nucleon matrix elements

Towards the determination of the 3-dimensional structure of the proton using lattice QCD simulations

Shallow Bound States and Hints for Broad Resonances with Quark Content bˉcˉud in B-Dˉ and B∗-Dˉ Scattering from Lattice QCD

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

Elastic Nucleon-Pion scattering amplitudes in the Δ channel at physical pion mass from Lattice QCD

Nonperturbative renormalization of asymmetric staple-shaped operators in twisted mass lattice QCD

Tuning of QCD+QED simulations with C⋆ boundary conditions

Probing the energy-smeared R-ratio on the lattice

The η→γ∗γ∗ transition form factor and the hadronic light-by-light η-pole contribution to the muon g−2 from lattice QCD

Nonperturbative renormalization of the supercurrent in N=1 Supersymmetric Yang-Mills Theory

Topological susceptibility of Nf​=2+1 QCD from staggered fermions spectral projectors at high temperatures

Improved renormalization scheme for nonlocal operators

Lattice study of $cc u ˉ s ˉ$ tetraquark channel in $D^{()} D_{s}^{()}$ scattering

Perturbative determination of $O (am)$ improvement on the QCD running coupling

Proton and neutron electromagnetic form factors using $N_{f}$ =2+1+1 twisted-mass fermions with physical values of the quark masses

Nucleon axial, tensor, and scalar charges and $σ$ -terms in lattice QCD

Nucleon charges and $σ$ -terms in lattice QCD

Shallow Bound States and Hints for Broad Resonances with Quark Content $b ˉ c ˉ u d$ in $B$ - $D ˉ$ and $B^{*}$ - $D ˉ$ Scattering from Lattice QCD

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

Elastic Nucleon-Pion scattering amplitudes in the $Δ$ channel at physical pion mass from Lattice QCD

Tuning of QCD+QED simulations with C $^{⋆}$ boundary conditions

The $η \to γ^{} γ^{}$ transition form factor and the hadronic light-by-light $η$ -pole contribution to the muon $g - 2$ from lattice QCD

Nonperturbative renormalization of the supercurrent in $N = 1$ Supersymmetric Yang-Mills Theory

Topological susceptibility of $N_{f} = 2 + 1$ QCD from staggered fermions spectral projectors at high temperatures