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arXiv 0903.4680hep-ph
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Collins碎裂与单横自旋不对称性

Collins Fragmentation and the Single Transverse Spin Asymmetry

Feng Yuan, Jian Zhou

摘要:

本文用共线因子化方法研究了单横自旋非对称性的Collins机制。识别了相应的扭三碎裂函数。我们表明,在这种方法中计算的柯林斯函数是普遍的。我们进一步研究了它的贡献的单横向自旋不对称性的半包容性强子生产在深非弹性散射,并证明了横向动量依赖和扭曲三共线的方法是一致的,在中间横向动量区域,两者都适用。

英文摘要:

We study the Collins mechanism for the single transverse spin asymmetry in the collinear factorization approach. The correspondent twist-three fragmentation function is identified. We show that the Collins function calculated in this approach is universal. We further examine its contribution to the single transverse spin asymmetry of semi-inclusive hadron production in deep inelastic scattering and demonstrate that the transverse momentum dependent and twist-three collinear approaches are consistent in the intermediate transverse momentum region where both apply.

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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