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arXiv 0807.0173hep-ph
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横向性和柯林斯碎片函数:走向一种新的全球分析

Transversity and Collins Fragmentation Functions: Towards a New Global Analysis

M. Anselmino, M. Boglione, U. D'Alesio, A. Kotzinian, S. Melis, F. Murgia, A. Prokudin, C. Turk

摘要:

本文对HERMES和COMPASS合作组的SIDIS和BELLE合作组的e+e-> h_1h_2X过程中的方位角不对称性的实验数据进行了新的、初步的全局分析。与我们以前的分析结果相比,新的数据允许更精确地确定柯林斯碎裂函数和$u$和$d$夸克的横向分布函数。给出了JLab和COMPASS在横向极化质子靶上工作的单自旋不对称性A_UT^{ \sin(H_h + H_S)}的估计。

英文摘要:

A new, preliminary global analysis of the experimental data on azimuthal asymmetries in SIDIS from HERMES and COMPASS collaborations, and in e+e- --> h_1 h_2 X processes from the BELLE collaboration, is performed. The new data allow for a more precise determination of the Collins fragmentation function and of the transversity distribution function for $u$ and $d$ quarks, in comparison with the results of our previous analysis. Estimates for the single spin asymmetry A_UT^{\sin(ϕ_h + ϕ_S)} at JLab and COMPASS, operating on a transversely polarized proton target, are presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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