Phenomenology of single spin asymmetries in p(transv. polarized)-p -> pion + X

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dc.creatorAnselmino, Mauro
dc.creatorBoglione, Maria
dc.creatorMurgia, Francesco
dc.date1999-01-28
dc.date1999-06-04
dc.date.accessioned2026-07-07T10:33:48Z
dc.date.available2026-07-07T10:33:48Z
dc.descriptionA phenomenological description of single transverse spin effects in hadron-hadron inclusive processes is proposed, assuming a generalized factorization scheme and pQCD hard interactions. The transverse momentum, k_T, of the quarks inside the hadrons and of the hadrons relatively to the fragmenting quark, is taken into account in distribution and fragmentation functions, and leads to possible non zero single spin asymmetries. The role of k_T and spin dependent quark fragmentations -- the so-called Collins effect -- is investigated in details in p(transv. polarized)-p -> pion + X processes: it is shown how the experimental data could be described, obtaining an explicit expression for the spin asymmetry of a polarized fragmenting quark, on which some comments are made. Predictions for other processes, possible further applications and experimental tests are discussed.
dc.description20+1 pages, LaTeX, 6 eps figures, uses epsfig.sty. Version v2: Some sentences rephrased and comments added throughout the paper; one reference added; no changes in results and figures. Final version to be published in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/hep-ph/9901442
dc.identifierhttp://arxiv.org/abs/hep-ph/9901442
dc.identifierPhys.Rev.D60:054027,1999
dc.identifierdoi:10.1103/PhysRevD.60.054027
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179248
dc.subjectHigh Energy Physics - Phenomenology
dc.titlePhenomenology of single spin asymmetries in p(transv. polarized)-p -> pion + X
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