QCD and strongly coupled gauge theories: challenges and perspectives

N Brambilla, S Eidelman, P Foka, S Gardner… - The European Physical …, 2014 - Springer
We highlight the progress, current status, and open challenges of QCD-driven physics, in
theory and in experiment. We discuss how the strong interaction is intimately connected to a …

Baryons as relativistic three-quark bound states

G Eichmann, H Sanchis-Alepuz, R Williams… - Progress in Particle and …, 2016 - Elsevier
We review the spectrum and electromagnetic properties of baryons described as relativistic
three-quark bound states within QCD. The composite nature of baryons results in a rich …

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

C Alexandrou, S Bacchio, M Constantinou… - Physical Review D, 2020 - APS
We determine the nucleon axial, scalar and tensor charges within lattice quantum
chromodynamics including all contributions from valence and sea quarks. We analyze three …

Probing novel scalar and tensor interactions from (ultra) cold neutrons to the LHC

T Bhattacharya, V Cirigliano, SD Cohen, A Filipuzzi… - Physical Review D …, 2012 - APS
Scalar and tensor interactions were once competitors to the now well-established VA
structure of the standard model weak interactions. We revisit these interactions and survey …

Lattice calculation of parton distributions

C Alexandrou, K Cichy, V Drach, E Garcia-Ramos… - Physical Review D, 2015 - APS
We report on our exploratory study for the direct evaluation of the parton distribution
functions from lattice QCD, based on a recently proposed new approach. We present …

Nucleon axial structure from lattice QCD

GS Bali, L Barca, S Collins, M Gruber, M Löffler… - Journal of High Energy …, 2020 - Springer
A bstract We present a new analysis method that allows one to understand and model
excited state contributions in observables that are dominated by a pion pole. We apply this …

Nucleon axial and pseudoscalar form factors from lattice QCD at the physical point

C Alexandrou, S Bacchio, M Constantinou… - Physical Review D, 2021 - APS
We compute the nucleon axial and induced pseudoscalar form factors using three
ensembles of gauge configurations, generated with dynamical light quarks with mass tuned …

Nucleon spin and momentum decomposition using lattice QCD simulations

C Alexandrou, M Constantinou, K Hadjiyiannakou… - Physical review …, 2017 - APS
We determine within lattice QCD the nucleon spin carried by valence and sea quarks and
gluons. The calculation is performed using an ensemble of gauge configurations with two …

Nucleon and pion structure with lattice QCD simulations at physical value of the pion mass

A Abdel-Rehim, C Alexandrou, M Constantinou… - Physical Review D, 2015 - APS
We present results on the nucleon scalar, axial, and tensor charges as well as on the
momentum fraction, and the helicity and transversity moments. The pion momentum fraction …

Nucleon axial form factors using twisted mass fermions with a physical value of the pion mass

C Alexandrou, M Constantinou, K Hadjiyiannakou… - Physical Review D, 2017 - APS
We present results on the nucleon axial and induced pseudoscalar form factors using an
ensemble of two degenerate twisted mass clover-improved fermions with mass yielding a …