Spin Structure Functions of the Proton and Deuteron From SLAC Experiments E155 and E155X
- SLAC
Experiments E155 and E155X at SLAC were polarized deep inelastic scattering measurements of the parallel and perpendicular scattering asymmetries. We extracted the polarized structure functions g{sub 1} and g{sub 2} of the proton and deuteron. Both experiments made precision measurements through a wide range in x and Q{sup 2}. These data fall into the kinematic range between existing world data and have good consistency with them. In combination with the other world data, the results for g{sub 1} allow increased constraint on NLO QCD fits to the polarized structure functions. For g{sub 2} no significant world data existed before E155X. The E155X measurement provides information about the higher twist effects in the nucleon.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515;
- OSTI ID:
- 813046
- Report Number(s):
- SLAC-PUB-9741
- Country of Publication:
- United States
- Language:
- English
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