Sivers effect in semiinclusive deeply inelastic scattering

Sivers effect in semiinclusive deeply inelastic scattering
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半包容深度非弹性散射中的西弗斯效应

DOI:
10.1103/physrevd.73.014021
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发表时间:
2005
期刊:
影响因子:
5
通讯作者:
Peter Schweitzer
Peter Schweitzer
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
J. Collins;John C. Collins;A. Efremov;K. Goeke;S. Menzel;Andreas Metz;Peter Schweitzer

文献摘要

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Sivers函数是从爱马仕半包含深度非弹性散射的单自旋不对称性数据中提取的。我们的分析使用一个简单的高斯模型的横向部分子动量的分布,连同味道依赖的领先1/N{sub c}近似和忽略的Sivers反夸克分布。我们发现,在误差的数据,这些近似是足够的。
The Sivers function is extracted from HERMES data on single spin asymmetries in semi-inclusive deeply inelastic scattering. Our analysis use a simple Gaussian model for the distribution of transverse parton momenta, together with the flavor dependence given by the leading 1/N{sub c} approximation and a neglect of the Sivers antiquark distribution. We find that within the errors of the data these approximations are sufficient.