Dispersion corrections to parity violating electron scattering

被引：4
|
作者：
Gorchtein, M. [1 ]
Horowitz, C. J. [1 ]
Ramsey-Musolf, M. J. [2 ]
机构：
[1] Indiana Univ, Ctr Nucl Theory, Bloomington, IN 47408 USA
[2] Univ Wisconsin, Madison, WI 53706 USA
来源：
VIII LATIN AMERICAN SYMPOSIUM ON NUCLEAR PHYSICS AND APPLICATIONS | 2010年 / 1265卷
关键词：
QWEAK; dispersion relations; TOTAL CROSS-SECTION; ENERGY; HYDROGEN; NUCLEI;
D O I：
10.1063/1.3480196
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We consider the dispersion correction to elastic parity violating electron-proton scattering due to gamma Z exchange. In a recent publication, this correction was reported to be substantially larger than the previous estimates. In this paper, we study the dispersion correction in greater detail. We confirm the size of the disperion correction to be similar to 6% for the QWEAK experiment designed to measure the proton weak charge. We enumerate parameters that have to be constrained to better than relative 30% in order to keep the theoretical uncertainty for QWEAK under control.
引用
收藏
页码：328 / +
页数：2
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