Hadron Formation in Deep-Inelastic Positron Scattering in a Nuclear Environment

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dc.creatorHERMES Collaboration
dc.creatorAirapetian, A.
dc.date2000-12-20
dc.date.accessioned2026-07-07T12:25:51Z
dc.date.available2026-07-07T12:25:51Z
dc.descriptionThe influence of the nuclear medium on the production of charged hadrons in semi-inclusive deep-inelastic scattering has been studied by the HERMES experiment at DESY using a 27.5 GeV positron beam. The differential multiplicity of charged hadrons and identified charged pions from nitrogen relative to that from deuterium has been measured as a function of the virtual photon energy νand the fraction z of this energy transferred to the hadron. There are observed substantial reductions of the multiplicity ratio R_M^h at low νand at high z, both of which are well described by a gluon-bremsstrahlung model of hadronization. A significant difference of the ν-dependence of R_M^h is found between positive and negative hadrons. This is interpreted in terms of a difference between the formation times of protons and pions, using a phenomenological model to describe the ν- and z-dependence of R_M^h.
dc.description10 pages, 5 figures, LaTex (RevTeX)
dc.identifierhttps://arxiv.org/abs/hep-ex/0012049
dc.identifierhttp://arxiv.org/abs/hep-ex/0012049
dc.identifierEur.Phys.J.C20:479-486,2001
dc.identifierdoi:10.1007/s100520100697
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214701
dc.subjectHigh Energy Physics - Experiment
dc.titleHadron Formation in Deep-Inelastic Positron Scattering in a Nuclear Environment
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