Charmonium Production via Fragmentation at Higher Orders in alpha_s

Simple item page
dc.creatorErnstrom, P.
dc.creatorHoyer, P.
dc.creatorVanttinen, M.
dc.date1996-01-25
dc.date.accessioned2026-07-07T03:58:48Z
dc.date.available2026-07-07T03:58:48Z
dc.descriptionQuarkonium production at a given large p_T is dominated by parton fragmentation: a parton which is produced with transverse momentum p_T/z fragments into a quarkonium state which carries a fraction z of the parton momentum. Since parton production cross sections fall steeply with p_T, high z fragmentation is favored. However, quantum number constraints may require the emission of gluons in the fragmentation process, and this softens the z dependence of the fragmentation function. We discuss the possibility that higher- order processes may enhance the large z part of fragmentation functions and thus contribute significantly to the quarkonium cross section. An explicit calculation of light quark fragmentation into eta_c shows that the higher-order process q -> q eta_c in fact dominates the lowest-order process q -> qg eta_c.
dc.description14 pages, LaTeX, 6 Postscript figures, uses epsf.sty
dc.identifierhttps://arxiv.org/abs/hep-ph/9601333
dc.identifierhttp://arxiv.org/abs/hep-ph/9601333
dc.identifierZ.Phys. C73 (1996) 119-124
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/45965
dc.subjectHigh Energy Physics - Phenomenology
dc.titleCharmonium Production via Fragmentation at Higher Orders in alpha_s
dc.typetext

Files

Collections

arXiv