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arXiv 0705.2356hep-ph
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包含和排斥强子过程中的单自旋不对称性

Single-Spin Asymmetries in Inclusive and Exclusive Hadronic Processes

Dae Sung Hwang, Jong Hyun Kim, Seyong Kim

摘要:

本文研究了电子-质子散射和电子正电子湮没的包容和排斥过程中的单自旋不对称性。在强子张量的分解中,通常存在一个洛伦兹对称的自旋相关项。这样一个术语的存在意味着在这些过程中的单自旋不对称性和这些重子的单自旋不对称性可以被理解在一个统一的方式。我们认为,它是重要的,以衡量在目前的B-工厂生产的$Λ$的包容性和排他性的过程中的单自旋不对称性。这将导致在这些过程中的对称自旋相关的强子张量的结构函数的第一次测量。

英文摘要:

We investigate the single-spin asymmetries in inclusive and exclusive processes of electron-proton scattering and electron-positron annihilation. In the decomposition of hadronic tensor, a Lorentz symmetric spin-dependent term is generally present. The existence of such a term implies single-spin asymmetries in these processes and these single-spin asymmetries for baryons can be understood in a unified manner. We argue that it is important to measure the single-spin asymmetries in both inclusive and exclusive processes for the $Λ$ production at the present B-factories. This will lead to the first measurement of the structure function of the symmetric spin-dependent hadronic tensor in these processes.

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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