Global analysis of hadron-production data in e^+ e^- annihilation for determining fragmentation functions

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dc.creatorHirai, M.
dc.creatorKumano, S.
dc.creatorNagai, T. -H.
dc.creatorOka, M.
dc.creatorSudoh, K.
dc.date2007-09-16
dc.date.accessioned2026-07-07T08:31:38Z
dc.date.available2026-07-07T08:31:38Z
dc.descriptionFragmentation functions of pion, kaon, and nucleon are determined by global analyses of hadron-production data in $e^+e^-$ annihilation. It is particularly important that uncertainties of the fragmentation functions are estimated for the first time. We found that light-quark and gluon fragmentation functions have large uncertainties, so that one should be careful in using these functions for hadron-production processes in heavy-ion collisions and lepton scattering. The analysis is extended to possible exotic hadron search by fragmentation functions. We found that internal structure of $f_0 (980)$, such as $s\bar s$ or tetraquark configuration, can be determined by noting differences between favored and disfavored fragmentation functions.
dc.description3 pages, 3 eps figures, to appear in the proceedings of INPC2007 (International Nuclear Physics Conference), Tokyo, Japan, June 3-8, 2007
dc.identifierhttps://arxiv.org/abs/0709.2457
dc.identifierhttp://arxiv.org/abs/0709.2457
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/138554
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleGlobal analysis of hadron-production data in e^+ e^- annihilation for determining fragmentation functions
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