Neutron/proton structure function ratio at large x

被引：171

作者：

Melnitchouk, W ^{[1
]}

Thomas, AW ^{[1
]}

机构：

[1] UNIV ADELAIDE,DEPT PHYS & MATH PHYS,ADELAIDE,SA 5005,AUSTRALIA

来源：

PHYSICS LETTERS B | 1996年 / 377卷 / 1-3期

关键词：

deuteron; neutron; off-shell; binding; SU(6) symmetry breaking; perturbative QCD;

D O I：

10.1016/0370-2693(96)00292-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

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 which is larger than the value of 1/4 obtained in earlier analyses.

引用

页码：11 / 17

页数：7

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