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Title: Measurements of the proton and deuteron spin structure functions at SLAC

Abstract

New measurements have been made of the proton and deuteron spin structure functions, {ital g}{sup {ital p}}{sub 1} and {ital g}{sup {ital d}}{sub 1}, using deep-inelastic scattering of longitudinally polarized electrons from polarized NH{sub 3} and ND{sub 3} targets. The data span the kinematic range 0.029{lt}{ital x}{lt}0.8 and {ital Q}{sup 2}{lt}10 (GeV/c){sup 2}. The integrals {Gamma}{sub {ital p}}={integral}{sup 1}{sub 0}{ital g}{sup {ital p}}{sub 1}({ital x},{ital Q}{sup 2}){ital dx} and {Gamma}{sub {ital d}}={integral}{sup 1}{sub 0}{ital g}{sup {ital d}}{sub 1}({ital x},{ital Q}{sup 2}){ital dx} have been evaluated at fixed {ital Q}{sup 2}=3 (GeV/c){sup 2} to yield {Gamma}{sub {ital p}}=0.127{plus_minus}0.004(stat.){plus_minus}0.010(syst.) and {Gamma}{sub {ital d}}=0.041{plus_minus}0.003{plus_minus}0.004. Both measurements are well-below the Ellis-Jaffe predictions.

Authors:
 [1]
  1. Stanford Linear Accelerator Center, Stanford, California 94309 (United States)
Publication Date:
Research Org.:
Stanford Linear Accelerator Center
OSTI Identifier:
279573
Report Number(s):
CONF-9409150-
Journal ID: APCPCS; ISSN 0094-243X; TRN: 96:018362
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 342; Journal Issue: 1; Conference: CAM `94: Canadian-American-Mexican physics meeting, Cancun (Mexico), 26-30 Sep 1994; Other Information: PBD: Aug 1995
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; PROTONS; STRUCTURE FUNCTIONS; DEUTERONS; DEEP INELASTIC SCATTERING; ELECTRON-MOLECULE COLLISIONS; SPIN; SUM RULES; NUCLEONS; HELICITY; AMMONIA; QUANTUM CHROMODYNAMICS; QUARK MODEL

Citation Formats

Stuart, L M. Measurements of the proton and deuteron spin structure functions at SLAC. United States: N. p., 1995. Web. doi:10.1063/1.48784.
Stuart, L M. Measurements of the proton and deuteron spin structure functions at SLAC. United States. doi:10.1063/1.48784.
Stuart, L M. Tue . "Measurements of the proton and deuteron spin structure functions at SLAC". United States. doi:10.1063/1.48784.
@article{osti_279573,
title = {Measurements of the proton and deuteron spin structure functions at SLAC},
author = {Stuart, L M},
abstractNote = {New measurements have been made of the proton and deuteron spin structure functions, {ital g}{sup {ital p}}{sub 1} and {ital g}{sup {ital d}}{sub 1}, using deep-inelastic scattering of longitudinally polarized electrons from polarized NH{sub 3} and ND{sub 3} targets. The data span the kinematic range 0.029{lt}{ital x}{lt}0.8 and {ital Q}{sup 2}{lt}10 (GeV/c){sup 2}. The integrals {Gamma}{sub {ital p}}={integral}{sup 1}{sub 0}{ital g}{sup {ital p}}{sub 1}({ital x},{ital Q}{sup 2}){ital dx} and {Gamma}{sub {ital d}}={integral}{sup 1}{sub 0}{ital g}{sup {ital d}}{sub 1}({ital x},{ital Q}{sup 2}){ital dx} have been evaluated at fixed {ital Q}{sup 2}=3 (GeV/c){sup 2} to yield {Gamma}{sub {ital p}}=0.127{plus_minus}0.004(stat.){plus_minus}0.010(syst.) and {Gamma}{sub {ital d}}=0.041{plus_minus}0.003{plus_minus}0.004. Both measurements are well-below the Ellis-Jaffe predictions.},
doi = {10.1063/1.48784},
journal = {AIP Conference Proceedings},
number = 1,
volume = 342,
place = {United States},
year = {1995},
month = {8}
}