Results 21 to 30 of about 84,997 (274)
Gluon parton distribution of the pion from lattice QCD
Physics Letters B, 2021 We present the first determination of the x-dependent pion gluon distribution from lattice QCD using the pseudo-PDF approach. We use lattice ensembles with 2+1+1 flavors of highly improved staggered quarks (HISQ), generated by MILC Collaboration, at two ...
Zhouyou Fan, Huey-Wen Lin
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Kaon and pion parton distributions
The European Physical Journal C, 2020 Beginning with results for the leading-twist two-particle distribution amplitudes of π\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{
Zhu-Fang Cui +8 more
semanticscholar +1 more source
Pion Production by Negative Pions [PDF]
Physical Review Letters, 1961 The reaction pi /sup -/ + p yields pi /sup +/ + pi /sup -/ + n is studied for incident T/sub i- = 365 and 432 Mev. The energy spectra of the ernergent pi /sup +/ mesons are measured at various angles with respect to the incident pi /sup -/ beam. The differential cross sections are analyzed in terms of pion-pion interactions and pionnuclecn resonances. (
Barish, Barry C. +4 more
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Phases of cold holographic QCD: Baryons, pions and rho mesons
SciPost Physics, 2023 We improve the holographic description of isospin-asymmetric baryonic matter within the Witten-Sakai-Sugimoto model by accounting for a realistic pion mass, computing the pion condensate dynamically, and including rho meson condensation by allowing the ...
Nicolas Kovensky, Aaron Poole, Andreas Schmitt
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Pion-Pion Interaction and Pion-Nucleon Scattering [PDF]
Progress of Theoretical Physics, 1960 Pion-pion interaction is analyzed by using the dispersion relation for pion-nucleon scattering obtained by keeping the momentum transfer between an initial pion and a final nucleon constant. In order to take into account the singularity of two-pion threshold in the dispersion relation, the dispersion relation may be regarded as an integral equation for
Kin-ichi Ishida +2 more
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Valence-quark distribution of the kaon and pion from lattice QCD
, 2021 We present the first lattice-QCD calculation of the kaon valence-quark distribution functions using the large-momentum effective theory (LaMET) approach.
Huey-Wen Lin +4 more
semanticscholar +1 more source
Valence parton distribution of the pion from lattice QCD: Approaching the continuum limit [PDF]
, 2020 We present a high-statistics lattice QCD determination of the valence parton distribution function (PDF) of pion, with a mass of $300$ MeV, using two very fine lattice spacings of $a=0.06$ fm and $0.04$ fm.
Xiang Gao +8 more
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Pion-pion scattering amplitude [PDF]
Physical Review D, 2005 We obtain reliable ππ scattering amplitudes consistent with experimental data, both at low and high energies, and fulfilling appropriate analyticity properties. We do this by first fitting experimental low energy [s^(1/2) ≤ (1.42 GeV] phase shifts and inelasticities with expressions that incorporate analyticity and unitarity.
Peláez Sagredo, José Ramón +1 more
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Chiral symmetry breaking: Current experimental status and prospects [PDF]
EPJ Web of Conferences, 2023 Chiral symmetry, linked to the smallness of the quark masses compared to the QCD bound states, and its breaking pattern are exploited in effective field theory to describe a multitude of phenomena by a few low-energy constants.
Friedrich Jan
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Pion valence quark distribution from matrix element calculated in lattice QCD [PDF]
Physical Review D, 2019 We present the first exploratory lattice QCD calculation of the pion valence quark distribution extracted from spatially separated current-current correlations in coordinate space.
R. Sufian +5 more
semanticscholar +1 more source