Determination of fragmentation functions and their uncertainties from e+ + e- -> h + X data

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dc.creatorHirai, M.
dc.creatorKumano, S.
dc.creatorNagai, T. -H.
dc.creatorSudoh, K.
dc.date2006-12-01
dc.date.accessioned2026-07-07T10:37:29Z
dc.date.available2026-07-07T10:37:29Z
dc.descriptionFragmentation functions are determined for pions, kaons, and nucleons by a global analysis of charged-hadron production data in electron-positron annihilation. The optimum functions are obtained in both leading order (LO) and next-to-leading order (NLO) of alpha_s. It is important that uncertainties of the fragmentation functions are estimated in this work by the Hessian method. We found that the uncertainties are large at small Q^2 and that they are generally reduced in the NLO in comparison with the LO ones. We supply a code for calculating the fragmentation functions and their uncertainties for the pions, kaons, and nucleons at given z and Q^2.
dc.description4 pages, LaTeX, 5 eps files, to be published in AIP proceedings of the 17th International Spin Physics Symposium (SPIN2006), Oct. 2-7, 2006, Kyoto, Japan
dc.identifierhttps://arxiv.org/abs/hep-ph/0612009
dc.identifierhttp://arxiv.org/abs/hep-ph/0612009
dc.identifierAIPConf.Proc.915:749-752,2007
dc.identifierdoi:10.1063/1.2750887
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180399
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleDetermination of fragmentation functions and their uncertainties from e+ + e- -> h + X data
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