Global analysis of the strangeness vector and axial form factors of the nucleon and their uncertainties

被引：0

作者：

Schaub, John ^{[1
]}

Pate, Stephen ^{[1
]}

机构：

[1] New Mexico State Univ, Las Cruces, NM 88001 USA

来源：

HYPERFINE INTERACTIONS | 2011年 / 201卷 / 1-3期

关键词：

Form factors; Strangeness; Parity-violating; Global fit; PROTON; SCATTERING; ASYMMETRY;

D O I：

10.1007/s10751-011-0289-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

We have studied the strangeness contribution to the elastic vector and axial form factors of the nucleon, using all available electroweak elastic scattering data sensitive to these contributions. Specifically, we combine nu p and (nu) over barp elastic scattering cross sections from Brookhaven E734 with parity-violating asymmetries in elastic ep scattering, and quasi-elastic ed and e He-4 scattering, observed in the SAMPLE, HAPPEx, G0 and PVA4 experiments. We are able not only to determine these form factors at individual values of momentum-transfer (Q(2)), as has been done recently, but also to fit the Q(2)-dependence of these form factors using simple functional forms. We present the results of these fits using existing data.

引用

页码：37 / 40

页数：4

共 13 条

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