TY - JOUR
T1 - Fragmentation of transversely polarized quarks probed in transverse momentum distributions
AU - Collins, John
N1 - Funding Information:
I would like to thank several colleagues for useful conversations, in particular Bob Carlitz, Steve Heppelmann, Bob Jaffe, Glenn Ladinsky, Lech Mankiewicz, Jian-Wei Qiu and George Sterman. This work was supported in part by the US Department of Energy under grant DE-FGO2-9OER-40577 and by the Texas National Laboratory Research Commission.
PY - 1993/5/10
Y1 - 1993/5/10
N2 - 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 in 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.
AB - 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 in 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.
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U2 - 10.1016/0550-3213(93)90262-N
DO - 10.1016/0550-3213(93)90262-N
M3 - Article
AN - SCOPUS:0346827575
SN - 0550-3213
VL - 396
SP - 161
EP - 182
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
IS - 1
ER -