Spin dependence in polarized elastic scattering in the CNI region

被引：0
|
作者：
Bravar, Alessandro [1 ]
机构：
[1] Brookhaven Natl Lab, Upton, NY 11973 USA
来源：
DEEP INELASTIC SCATTERING | 2007年
关键词：
D O I：
10.1142/9789812706706_0160
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The interference of the electromagnetic spin-flip amplitude with a hadronic spin-nonflip amplitude in elastic scattering leads to significant spin dependencies at very low momentum transfer t. Recent results on A(N) and A(NN) in polarized proton-proton elastic scattering at very low t using a polarized atomic hydrogen gas jet target and the 100 GeV/c polarized proton beam are at RHIC are presented. Our A(N) pp data are well described with the electromagnetic spin-flip alone and do not support the presence of a large hadronic spin-flip amplitude. The double spin asymmetry A(NN) is found to be consistent with zero over the whole measured t range, indicating that double spin-flip amplitudes do not play a role in this kinematical region.
引用
收藏
页码：687 / 690
页数：4
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