Jet lag effect and leading hadron production

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dc.creatorKopeliovich, B. Z.
dc.creatorPirner, H. -J.
dc.creatorPotashnikova, I. K.
dc.creatorSchmidt, Ivan
dc.date2007-06-20
dc.date.accessioned2026-07-07T11:41:20Z
dc.date.available2026-07-07T11:41:20Z
dc.descriptionWe propose a solution for the long standing puzzle of a too steeply falling fragmentation function for a quark fragmenting into a pion, calculated by Berger [1] in the Born approximation. Contrary to the simple anticipation that gluon resummation worsens the problem, we find good agreement with data. Higher quark Fock states slow down the quark, an effect which we call jet lag. It can be also expressed in terms of vacuum energy loss. As a result, the space-time development of the jet shrinks and the $z$-dependence becomes flatter than in the Born approximation. The space-time pattern is also of great importance for in-medium hadronization.
dc.description11 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0706.3059
dc.identifierhttp://arxiv.org/abs/0706.3059
dc.identifierPhys.Lett.B662:117-122,2008
dc.identifierdoi:10.1016/j.physletb.2008.02.061
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200497
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleJet lag effect and leading hadron production
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