Measurements of the proton and deuteron spin structure functions at SLAC
- Stanford Linear Accelerator Center, Stanford, California 94309 (United States)
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.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 279573
- Report Number(s):
- CONF-9409150-; ISSN 0094-243X; TRN: 96:018362
- Journal Information:
- AIP Conference Proceedings, Vol. 342, 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
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