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Title: Gottfried Sum Rule in QCD Nonsinglet Analysis of DIS Fixed-Target Data

Abstract

Deep-inelastic-scattering data from fixed-target experiments on the structure function F{sub 2} were analyzed in the valence-quark approximation at the next-to-next-to-leading-order accuracy level in the strong-coupling constant. In this analysis, parton distributions were parametrized by employing information from the Gottfried sum rule. The strong-coupling constant was found to be α{sub s}(M{sup 2}{sub Z}) = 0.1180 ± 0.0020 (total expt. error), which is in perfect agreement with the world-averaged value from an updated Particle Data Group (PDG) report, α{sup PDG}{sub s} (M{sup 2}{sub Z}) = 0.1181 ± 0.0011. Also, the value of 〈x〉{sub u−d} = 0.187 ± 0.021 found for the second moment of the difference in the u- and d-quark distributions complies very well with the most recent lattice result 〈x〉{sup LATTICE}{sub u−d} = 0.208 ± 0.024.

Authors:
; ;  [1]
  1. Joint Institute for Nuclear Research (Russian Federation)
Publication Date:
OSTI Identifier:
22761740
Resource Type:
Journal Article
Journal Name:
Physics of Atomic Nuclei
Additional Journal Information:
Journal Volume: 81; Journal Issue: 2; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7788
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COUPLING CONSTANTS; D QUARKS; DEEP INELASTIC SCATTERING; DISTRIBUTION; GLUONS; QUANTUM CHROMODYNAMICS; STRONG-COUPLING MODEL; STRUCTURE FUNCTIONS; SUM RULES

Citation Formats

Kotikov, A. V., E-mail: kotikov@theor.jinr.ru, Krivokhizhin, V. G., and Shaikhatdenov, B. G.. Gottfried Sum Rule in QCD Nonsinglet Analysis of DIS Fixed-Target Data. United States: N. p., 2018. Web. doi:10.1134/S1063778818020126.
Kotikov, A. V., E-mail: kotikov@theor.jinr.ru, Krivokhizhin, V. G., & Shaikhatdenov, B. G.. Gottfried Sum Rule in QCD Nonsinglet Analysis of DIS Fixed-Target Data. United States. doi:10.1134/S1063778818020126.
Kotikov, A. V., E-mail: kotikov@theor.jinr.ru, Krivokhizhin, V. G., and Shaikhatdenov, B. G.. Thu . "Gottfried Sum Rule in QCD Nonsinglet Analysis of DIS Fixed-Target Data". United States. doi:10.1134/S1063778818020126.
@article{osti_22761740,
title = {Gottfried Sum Rule in QCD Nonsinglet Analysis of DIS Fixed-Target Data},
author = {Kotikov, A. V., E-mail: kotikov@theor.jinr.ru and Krivokhizhin, V. G. and Shaikhatdenov, B. G.},
abstractNote = {Deep-inelastic-scattering data from fixed-target experiments on the structure function F{sub 2} were analyzed in the valence-quark approximation at the next-to-next-to-leading-order accuracy level in the strong-coupling constant. In this analysis, parton distributions were parametrized by employing information from the Gottfried sum rule. The strong-coupling constant was found to be α{sub s}(M{sup 2}{sub Z}) = 0.1180 ± 0.0020 (total expt. error), which is in perfect agreement with the world-averaged value from an updated Particle Data Group (PDG) report, α{sup PDG}{sub s} (M{sup 2}{sub Z}) = 0.1181 ± 0.0011. Also, the value of 〈x〉{sub u−d} = 0.187 ± 0.021 found for the second moment of the difference in the u- and d-quark distributions complies very well with the most recent lattice result 〈x〉{sup LATTICE}{sub u−d} = 0.208 ± 0.024.},
doi = {10.1134/S1063778818020126},
journal = {Physics of Atomic Nuclei},
issn = {1063-7788},
number = 2,
volume = 81,
place = {United States},
year = {2018},
month = {3}
}