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Title: Results on nucleon structure functions from polarized and unpolarized deep inelastic muon scattering experiments at CERN

Abstract

Data are presented on the spin-dependent structure function of the proton, {ital g}{sup {ital p}}{sub 1}, measured in inclusive polarized muon scattering. The first moment of {ital g}{sup {ital p}}{sub 1}({ital x}) is compared with that of earlier experiments and with the Ellis-Jaffe prediction. Also semi-inclusive data are shown, where charged hadrons provide information on spin-flavor correlations. In the context of the quark-parton model the data indicate that quark spins contribute a small fraction to the nucleon spin. All published data of {ital g}{sub 1} in combination confirm the Bjorken sum rule at the 10 percent accuracy level. In a QCD analysis of {ital F}{sup {ital p}}{sub 2} and {ital F}{sup {ital d}}{sub 2}, measured with high precision down to small {ital x} by NMC, the gluon distribution is determined. The {ital F}{sup {ital n}}{sub 2}/{ital F}{sup {ital p}}{sub 2} data are reanalyzed and the Gottfried sum {integral}{sup 1}{sub 0}[{ital F}{sup {ital p}}{sub 2}({ital x}){minus}{ital F}{sup {ital n}}{sub 2}({ital x})]/{ital x} {ital dx} is evaluated. The earlier reported flavor asymmetry in the nucleon is confirmed. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

Authors:
 [1]
  1. NIKHEF, Amsterdam, The Netherlands, representing the Spin Muon Collaboration (SMC) and the New Muon Collaboration (NMC) at CERN (Switzerland)
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
165602
Report Number(s):
CONF-9405132-
Journal ID: APCPCS; ISSN 0094-243X; TRN: 96:002265
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 334; Journal Issue: 1; Conference: 14. International IUPAP conference on few body problems in physics, Williamsburg, VA (United States), 26-31 May 1994; Other Information: PBD: 10 May 1995
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; MUON-NUCLEON INTERACTIONS; DEEP INELASTIC SCATTERING; NUCLEONS; STRUCTURE FUNCTIONS; GEV RANGE 100-1000; POLARIZED TARGETS; INCLUSIVE INTERACTIONS; QUARK MODEL; SUM RULES; EXPERIMENTAL DATA

Citation Formats

van Dantzig, R. Results on nucleon structure functions from polarized and unpolarized deep inelastic muon scattering experiments at CERN. United States: N. p., 1995. Web. doi:10.1063/1.48197.
van Dantzig, R. Results on nucleon structure functions from polarized and unpolarized deep inelastic muon scattering experiments at CERN. United States. https://doi.org/10.1063/1.48197
van Dantzig, R. 1995. "Results on nucleon structure functions from polarized and unpolarized deep inelastic muon scattering experiments at CERN". United States. https://doi.org/10.1063/1.48197.
@article{osti_165602,
title = {Results on nucleon structure functions from polarized and unpolarized deep inelastic muon scattering experiments at CERN},
author = {van Dantzig, R},
abstractNote = {Data are presented on the spin-dependent structure function of the proton, {ital g}{sup {ital p}}{sub 1}, measured in inclusive polarized muon scattering. The first moment of {ital g}{sup {ital p}}{sub 1}({ital x}) is compared with that of earlier experiments and with the Ellis-Jaffe prediction. Also semi-inclusive data are shown, where charged hadrons provide information on spin-flavor correlations. In the context of the quark-parton model the data indicate that quark spins contribute a small fraction to the nucleon spin. All published data of {ital g}{sub 1} in combination confirm the Bjorken sum rule at the 10 percent accuracy level. In a QCD analysis of {ital F}{sup {ital p}}{sub 2} and {ital F}{sup {ital d}}{sub 2}, measured with high precision down to small {ital x} by NMC, the gluon distribution is determined. The {ital F}{sup {ital n}}{sub 2}/{ital F}{sup {ital p}}{sub 2} data are reanalyzed and the Gottfried sum {integral}{sup 1}{sub 0}[{ital F}{sup {ital p}}{sub 2}({ital x}){minus}{ital F}{sup {ital n}}{sub 2}({ital x})]/{ital x} {ital dx} is evaluated. The earlier reported flavor asymmetry in the nucleon is confirmed. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.},
doi = {10.1063/1.48197},
url = {https://www.osti.gov/biblio/165602}, journal = {AIP Conference Proceedings},
number = 1,
volume = 334,
place = {United States},
year = {Wed May 10 00:00:00 EDT 1995},
month = {Wed May 10 00:00:00 EDT 1995}
}