Semi-inclusive deep inelastic scattering at small transverse momentum
Semi-inclusive deep inelastic scattering at small transverse momentum
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DOI：
10.1088/1126-6708/2007/02/093
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发表时间：
2006-11
影响因子：
5.4
通讯作者：
A. Bacchetta;M. Diehl;K. Goeke;A. Metz;P. Mulders;M. Schlegel
中科院分区：
文献类型：
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作者：
A. Bacchetta;M. Diehl;K. Goeke;A. Metz;P. Mulders;M. Schlegel
我们研究了被探测强子的低横向动量下，核子外单粒子包含性深度非弹性散射的截面。我们根据结构函数对截面进行分解，并根据横向动量相关的部分子分布和碎裂函数在树的水平上计算横截面。我们的结果在单光子交换近似下是完全的，在光束和目标的偏振下，具有领先的和第一次亚偏转的精度。
We study the cross section for one-particle inclusive deep inelastic scattering off the nucleon for low transverse momentum of the detected hadron. We decompose the cross section in terms of structure functions and calculate them at tree level in terms of transverse-momentum-dependent parton distribution and fragmentation functions. Our results are complete in the one-photon exchange approximation at leading and first subleading twist accuracy, with both beam and target polarization.