Determination of the fragmentation functions from an NLO QCD analysis of the HERMES data on pion multiplicities

Autor:	Leader, Elliot, Sidorov, Alexander V., Stamenov, Dimiter B.
Rok vydání:	2015
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Experiment
Zdroj:	Phys. Rev. D 93, 074026 (2016)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.93.074026
Popis:	An NLO QCD analysis of the final HERMES data on pion multiplicities is presented and a new set of pion fragmentation functions is extracted from the best fit to the data. We have studied the so-called [x,z] and [Q^2,z] presentations of their data, as given by HERMES, which, in principle, should simply be two different ways of presenting the experimental data. We have based our extraction on an excellent fit to the [Q^2,z] presentation of the data. We also draw attention to what appears to be a problem with the [x,z] presentation of the HERMES data. Comment: 12 pages, 7 figures; This updated version corresponds to the paper accepted for publication in Phys. Rev. D
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1506.06381 Zobrazit plný text záznamu View this record from Arxiv