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arXiv 0901.3078hep-ph
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Drell-Yan过程中的Sivers效应

Sivers effect in Drell-Yan processes

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

摘要:

最近从半包含深度非弹性散射数据[1]中提取的Sivers分布用于计算Drell-Yan过程中Sivers不对称性的估计,这些过程正在几个设施(RHIC,COMPASS,J-PARC,PAX,PANDA,NICA(JINR)和SPASCHARM(IHEP))进行规划。大多数这些不对称原来是大的,可以允许一个明确的测试时,积极的SIDIS和Drell-Yan过程中的Sivers分布的预测符号变化。这被认为是一个基本的测试,我们的理解,在QCD和因式分解方案,单自旋不对称性。

英文摘要:

The Sivers distributions recently extracted from semi-inclusive deep inelastic scattering data [1] are used to compute estimates for Sivers asymmetries in Drell-Yan processes which are being planned at several facilities (RHIC, COMPASS, J-PARC, PAX, PANDA, NICA (JINR) and SPASCHARM (IHEP)). Most of these asymmetries turn out to be large and could allow a clear test of the predicted sign change of the Sivers distributions when active in SIDIS and Drell-Yan processes. This is regarded as a fundamental test of our understanding, within QCD and the factorization scheme, of single spin asymmetries.

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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