1992/08/31 by John Collins, John C. Collins · 7 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/0550-3213(93)90262-n
published as Nucl.Phys. B396 (1993) 161-182 · 22 pages + 4 figures (included), LaTeX. V. 2 has misprints corrected and an appendix added, as in the published version
openalex publication_date 1993/05/01 · arxiv created 2002/05/10 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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 \em 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⊥ 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.