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dc.contributor.authorArash, Firooz-
dc.contributor.authorTomio, Lauro-
dc.identifier.citationPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 401, n. 3-4, p. 207-212, 1997.-
dc.description.abstractInvestigation of invariant cross-sections for production of K*- and K*0, in the fragmentation region of the proton, in p - p and γ - p reactions, gives a direct and unambiguous probe to the symmetry breaking of the nucleon sea. Based on existing data, we clearly found a large asymmetry of the sea. Our result is in excellent agreement with NA51 measurement, signaling lack of any nuclear effect. The measurement can be carried out in a single experimental set up. The ratio K*-/K*0 is equivalent to ū/d̄, with easy access to the x-dependence of the asymmetry. The observed asymmetry from available experimental data is used to improve the valon-recombination model. © 1997 Elsevier Science B.V.en
dc.subjectExperimental tests-
dc.subjectFlavor symmetries-
dc.subjectMeson production-
dc.subjectQuark models-
dc.titleProbing SU(2) symmetry breaking in the nucleon seaen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionAtomic Energy Organization of Iran-
dc.contributor.institutionAmir Kabir University of Technology-
dc.description.affiliationInst. de Fis. Teórica Universidade Estadual Paulista, 01405-900 São Paulo-
dc.description.affiliationCtr. for Theor. Phys. and Math. Atomic Energy Organization of Iran, P.O. Box 11365-8486, Tehran-
dc.description.affiliationPhysics Department Amir Kabir University of Technology, Hafez Avenue, Tehran-
dc.description.affiliationUnespInst. de Fis. Teórica Universidade Estadual Paulista, 01405-900 São Paulo-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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