Nuclear effects on the spin-dependent structure functions
Abstract
We address the question how the spin-dependent nucleon structure function g1(x,Q**2) gets modified when the nucleon is bound inside a nucleus. We analyze the influence of nuclear interactions using the delta-pion model, known to describe well the unpolarized effect, and the free polarized parton distributions. The results for the neutron in 3-He and proton in 3-H, 7-Li and 19-F are presented, showing significant changes in the parton spin distributions and in their moments. Scattering processes off polarized 7-Li are suggested which could justify these theoretical calculations and shed more light on both nuclear spin structure and short distance QCD.
- Publication:
-
arXiv e-prints
- Pub Date:
- December 2000
- DOI:
- 10.48550/arXiv.hep-ph/0012293
- arXiv:
- arXiv:hep-ph/0012293
- Bibcode:
- 2000hep.ph...12293S
- Keywords:
-
- High Energy Physics - Phenomenology
- E-Print:
- 13 pages with 4 EPS figures