TY  - JOUR
AB  - We have measured the spin-dependent structure function $g_1~p$ of the proton in deep inelastic scattering of polarized muons off polarized protons, in the kinematic range $0.003<x<0.7$ and $1\,\mbox{GeV}~2<Q~2<60\,\mbox{GeV}~2$. Its first moment, $\int_0~1 g_1~p(x) dx $, is found to be $0.136 \pm 0.011\,(\mbox{stat.})\pm 0.011\,(\mbox{syst.})$ at $Q~2=10\,\mbox{GeV}~2$. This value is smaller than the prediction of the Ellis--Jaffe sum rule by two standard deviations, and is consistent with previous measurements. A combined analysis of all available proton, deuteron and neutron data confirms the Bjorken sum rule to within $10\%$ of the theoretical value.
DA  - 1994
DO  - 10.1016/0370-2693(94)90793-5
KW  - x-dependence
KW  - p: structure function
KW  - spin dependence
KW  - Phenomenology-HEP
KW  - polarized target: p
KW  - p: polarized target
KW  - polarized beam: muon
KW  - muon p: deep inelastic scattering
KW  - muon: polarized beam
KW  - dependence: spin
KW  - magnetic spectrometer: experimental results
KW  - deep inelastic scattering: muon p
KW  - CERN SPS
KW  - cross section: asymmetry
KW  - approx. 190 GeV-cms
KW  - structure function: moment
KW  - sum rule
LA  - eng
IS  - 2-3
M2  - 399
PY  - 1994
SN  - 0370-2693
SP  - 399-406
T2  - Phys.Lett. B
TI  - Measurement of the spin-dependent structure function g1(x) of the proton
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-17788926
Y2  - 2024-11-21T20:35:18
ER  -