Spin structure functions of the neutron g{sub 1}{sup n}: SLAC E154 results
- Department of Physics, Temple University, Philadelphia, Philadelphia19122 E154 Collaboration (United States)
We report on a precision measurement of the neutron spin structure function g{sub 1}{sup n} using deep inelastic scattering of polarized electrons by polarized {sup 3}He. For the kinematic range 0.014{lt}x{lt}0.7 and 1(GeV/c){sup 2}{lt}Q{sup 2}{lt}17(GeV/c){sup 2}, we obtain {integral}{sub 0.014}{sup 0.7}g{sub 1}{sup n}(x)dx={minus}0.036{plus_minus}0.004(stat){plus_minus}0.005(syst) at an average Q{sup 2}=5(GeV/c){sup 2}. We find relatively large negative values for g{sub 1}{sup n} at low x. The results call into question the usual Regge theory method for extrapolating to x=0 to find the full neutron integral {integral}{sub 0}{sup 1}g{sub 1}{sup n}(x)dx, needed for testing quark-parton model and QCD sum rules. {copyright} {ital 1997 American Institute of Physics.}
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-94ER40844
- OSTI ID:
- 624828
- Report Number(s):
- CONF-970463--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 407; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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