Valence-quark distributions in the pion

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dc.creatorHecht, M. B.
dc.creatorRoberts, C. D.
dc.creatorSchmidt, S. M.
dc.date2000-08-24
dc.date2000-11-29
dc.date.accessioned2026-07-07T10:54:34Z
dc.date.available2026-07-07T10:54:34Z
dc.descriptionWe calculate the pion's valence-quark momentum-fraction probability distribution using a Dyson-Schwinger equation model. Valence-quarks with an active mass of 0.30 GeV carry 71% of the pion's momentum at a resolving scale q_0=0.54 GeV = 1/(0.37 fm). The shape of the calculated distribution is characteristic of a strongly bound system and, evolved from q_0 to q=2 GeV, it yields first, second and third moments in agreement with lattice and phenomenological estimates, and valence-quarks carrying 49% of the pion's momentum. However, pointwise there is a discrepancy between our calculated distribution and that hitherto inferred from parametrisations of extant pion-nucleon Drell-Yan data.
dc.description8 pages, 3 figures, REVTEX, aps.sty, epsfig.sty, minor corrections, version to appear in PRC
dc.identifierhttps://arxiv.org/abs/nucl-th/0008049
dc.identifierhttp://arxiv.org/abs/nucl-th/0008049
dc.identifierPhys.Rev.C63:025213,2001
dc.identifierdoi:10.1103/PhysRevC.63.025213
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/185837
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Experiment
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Experiment
dc.titleValence-quark distributions in the pion
dc.typetext

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