An absolute polarimeter for high energy protons

被引：16

作者：

Buttimore, NH ^{[1
]}

Leader, E

Trueman, TL

机构：

[1] Univ Dublin Trinity Coll, Sch Math, Dublin 2, Ireland

[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England

[3] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW D | 2001年 / 64卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.64.094021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A study of the spin asymmetries for polarized elastic proton-proton collisions in the electromagnetic hadronic interference [Coulomb nuclear interference (CNI)] region of momentum transfer provides a method of self-calibration of proton polarization. The method can be extended to non-identical spin half scattering so that, in principle, the polarization of a proton may be obtained through an analysis of its elastic collision with a different polarized particle, He-3, for instance. Sufficiently large CNI spin asymmetries provide enough information to facilitate the evaluation of nearly all the helicity amplitudes at small t as well as the polarization of both initial spin half fermions. Thus it can serve equally well as a polarimeter for He-3.

引用

页数：9

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