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arXiv 0810.2128hep-ph
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通过独家pi0电生产实现横向性

Transversity via Exclusive pi0 Electroproduction

Gary R. Goldstein, Simonetta Liuti, Saeed Ahmad

摘要:

从核子中独家电产生π 0可以与横向性、张量荷和其他与横向性有关的量有关。这个过程隔离了t-通道交换量子数的C-奇偶奇数和手征奇数组合。在强子图象中,介子产生的振幅,中间能量和Q是由C-奇Regge交换与末态相互作用决定的。这种奇过程的螺旋度结构与夸克螺旋度翻转或手征奇广义部分子分布(GPD)有关,不同的截面和不对称性将对这种横向性敏感。

英文摘要:

Exclusive pi0 electroproduction from nucleons can be related to transversity, the tensor charge, and other quantities related to transversity. This process isolates C-parity odd and chiral odd combinations of t-channel exchange quantum numbers. In a hadronic picture the meson production amplitudes for intermediate energy and Q are determined by C-odd Regge exchanges with final state interactions. The helicity structure for this C-odd process relates to the quark helicity flip, or chiral odd generalized parton distributions (GPDs).Various cross sections and asymmetries will be sensitive to the transversity.

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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