A PRECISE EXTRACTION OF R=SIGMA-L/SIGMA-T FROM A GLOBAL ANALYSIS OF THE SLAC DEEP INELASTIC E-P AND E-D SCATTERING CROSS-SECTIONS

被引：383
|
作者：
WHITLOW, LW
ROCK, S
BODEK, A
DASU, S
RIORDAN, EM
机构：
[1] STANFORD UNIV,STANFORD,CA 94305
[2] UNIV ROCHESTER,ROCHESTER,NY 14627
[3] AMERICAN UNIV,WASHINGTON,DC 20016
来源：
PHYSICS LETTERS B | 1990年 / 250卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0370-2693(90)91176-C
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the extraction of R=σL/σT from a global analysis of eight SLAC deep inelastic experiments on e-p and e-d scattering performed between 1970 and 1985. Values of Rp, Rd, and Rd - Rp are determined over the entire SLAC kinematic range: 0.1≤x≤0.9 and 0.6≤Q2≤20.0 (GeV/c)2. We find that Rp=Rd. Measured values of R(x,Q2) are larger than predictions based on perturbative QCD and on QCD with the inclusion of kinematic target mass terms, indicating that dynamical higher twist effects may be important in the SLAC kinematic range. © 1990.
引用
收藏
页码：193 / 198
页数：6
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