Neutron/Proton Structure Function Ratio at Large x
核理论
2008-11-26 v1 高能物理 - 唯象学
摘要
We re-examine the large-x neutron/proton structure function ratio extracted from the latest deuteron data, taking into account the most recent developments in the treatment of Fermi motion, binding and nucleon off-shell effects in the deuteron. Our findings suggest that as x->1 the ratio of the neutron to proton structure functions (F_2^n/F_2^p) is consistent with the perturbative QCD expectation of 3/7, but larger than the value of 1/4 obtained in earlier analyses.
引用
@article{arxiv.nucl-th/9602038,
title = {Neutron/Proton Structure Function Ratio at Large x},
author = {W. Melnitchouk and A. W. Thomas},
journal= {arXiv preprint arXiv:nucl-th/9602038},
year = {2008}
}
备注
18 pages RevTeX, 4 postscript figures, accepted for publication in Phys. Lett. B