PolarizedΛ'sin the current fragmentation region

Autor:	R. L. Jaffe
Rok vydání:	1996
Předmět:	Quark Physics Nuclear and High Energy Physics Particle physics Meson High Energy Physics::Phenomenology Nuclear Theory Hyperon Nucleon spin structure Deep inelastic scattering Lambda baryon Helicity Nuclear physics High Energy Physics::Experiment Nuclear Experiment Nucleon
Zdroj:	Physical Review D. 54:R6581-R6585
ISSN:	1089-4918 0556-2821
DOI:	10.1103/physrevd.54.r6581
Popis:	Data on the nucleon spin structure suggests that the u (and d) quark distri- butions in thehyperon may be polarized. If this correlation carries over into fragmentation, then the study of polarized �'s in the current fragmen- tation region of deep inelastic lepton scattering will be a sensitive probe of nucleon spin structure. � production by polarized electrons from unpolarized targets can search for this correlation. If it is signficant, � production by un- polarized electrons from longitudinally and transversely polarized targets can probe the u-quark helicity and transversity distributions in the nucleon. We review what is known about quark polarization in the �, summarize electro- production of polarizeds, and estimate the sensitivity to quark polarizations in the nucleon. We also describe polarization phenomena associated with vec- tor meson electroproduction that can be observed in the same experimental configuration.
Databáze:	OpenAIRE
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