FRAGMENTATION OF TRANSVERSELY POLARIZED QUARKS PROBED IN TRANSVERSE-MOMENTUM DISTRIBUTIONS

被引：1041

作者：

COLLINS, J

机构：

[1] Physics Department, Penn State University, University Park

来源：

NUCLEAR PHYSICS B | 1993年 / 396卷 / 01期

关键词：

D O I：

10.1016/0550-3213(93)90262-N

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

It is shown that the azimuthal dependence of the distribution of hadrons in a quark jet is a probe of the transverse spin of the quark initiating the jet. This results in a new spin-dependent fragmentation function that acts at the twist-2 level. One example of a process where it contributes is semi-inclusive deeply inelastic scattering with a transversely polarized nucleon target but with an unpolarized electron beam. This process is treated in detail. Another process is the cross section for singly polarized hadron-hadron scattering when two high-p(perpendicular-to), hadrons are measured in the final state and are close to back-to-back in azimuth. The new fragmentation function is sensitive to the coupling of the fragmentation process to (spontaneous) chiral symmetry breaking.

引用

页码：161 / 182

页数：22

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