Global analysis for determining fragmentation functions and their uncertainties in light hadrons

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dc.creatorHirai, M.
dc.creatorKumano, S.
dc.creatorNagai, T. -H.
dc.creatorSudoh, K.
dc.date2007-05-19
dc.date.accessioned2026-07-07T08:02:29Z
dc.date.available2026-07-07T08:02:29Z
dc.descriptionFragmentation functions are determined for the pion, kaon, and proton by analyzing charged-hadron production data in electron-positron annihilation. It is important that uncertainties of the determined fragmentation functions are estimated in this analysis. Analysis results indicate that gluon and light-quark functions have large uncertainties especially at small Q^2. We find that next-to-leading-order (NLO) uncertainties are significantly reduced in comparison with leading-order (LO) ones in the pion and kaon. The fragmentation functions are very different in various analysis groups. However, all the recent functions are roughly within the estimated uncertainties, which indicates that they are consistent with each other. We provide a code for calculating the fragmentation functions and their uncertainties at a given kinematical point of z and Q^2 by a user.
dc.description4 pages, LaTeX, 6 eps files, to be published in proceedings of 42nd Rencontres de Moriond on QCD and high energy hadronic interactions, La Thuile, Italy, 17-24 Mar 2007. A code for calculating the fragmentation functions and their uncertainties can be obtained from http://research.kek.jp/people/kumanos/ffs.html
dc.identifierhttps://arxiv.org/abs/0705.2791
dc.identifierhttp://arxiv.org/abs/0705.2791
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/129246
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleGlobal analysis for determining fragmentation functions and their uncertainties in light hadrons
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