A Lattice Calculation of Parton Distributions

Authors :: Alexandrou, Constantia
Cichy, K.
Drach, V.
Garcia-Ramos, E.
Hadjiyiannakou, Kyriakos
Jansen, K.
Steffens, F.
Wiese, C.
Alexandrou, Constantia [0000-0001-9136-3621]
Source :: Physical Review D-Particles, Fields, Gravitation and Cosmology, Phys Rev D Part Fields Gravit Cosmol, Alexandrou, C, Cichy, K, Drach, V, Garcia-Ramos, E, Hadjiyiannakou, K, Jansen, K, Steffens, F & Wiese, C 2015, ' Lattice calculation of parton distributions ', Physical Review D, vol. 92, no. 1 . https://doi.org/10.1103/PhysRevD.92.014502, Physical review / D 92(1), 014502 (2015). doi:10.1103/PhysRevD.92.014502
Publication Year :: 2015
Publisher :: arXiv, 2015.
Abstract: 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 encouraging results using Nf = 2 + 1 + 1 twisted mass fermions with a pion mass of about 370 MeV. The focus of this work is a detailed description of the computation, including the lattice calculation, the matching to an infinite momentum and the nucleon mass correction. In addition, we test the effect of gauge link smearing in the operator to estimate the influence of the Wilson line renormalization, which is yet to be done.<br />Comment: Minor changes in the text. Version published in PRD. 19 pages, 6 figures

Subjects :: Physics
Quantum chromodynamics
Nuclear and High Energy Physics
Particle physics
High Energy Physics::Lattice
Lattice field theory
High Energy Physics - Lattice (hep-lat)
FOS: Physical sciences
Parton
Lattice QCD
Fermion
Renormalization
High Energy Physics - Phenomenology
Distribution function
High Energy Physics - Lattice
High Energy Physics - Phenomenology (hep-ph)
ddc:530
Nucleon

Database :: OpenAIRE
Journal :: Physical Review D-Particles, Fields, Gravitation and Cosmology, Phys Rev D Part Fields Gravit Cosmol, Alexandrou, C, Cichy, K, Drach, V, Garcia-Ramos, E, Hadjiyiannakou, K, Jansen, K, Steffens, F & Wiese, C 2015, ' Lattice calculation of parton distributions ', Physical Review D, vol. 92, no. 1 . https://doi.org/10.1103/PhysRevD.92.014502, Physical review / D 92(1), 014502 (2015). doi:10.1103/PhysRevD.92.014502
Accession number :: edsair.doi.dedup.....7a3e6c63aa423ab619a53d6a5929736f
Full Text :: https://doi.org/10.48550/arxiv.1504.07455