Probing SU(2) symmetry breaking in the nucleon sea

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorArash, Firooz
dc.creatorTomio, Lauro
dc.date2014-05-27T11:18:14Z
dc.date2016-10-25T18:14:28Z
dc.date2014-05-27T11:18:14Z
dc.date2016-10-25T18:14:28Z
dc.date1997-05-29
dc.date.accessioned2017-04-06T00:49:39Z
dc.date.available2017-04-06T00:49:39Z
dc.identifierPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 401, n. 3-4, p. 207-212, 1997.
dc.identifier0370-2693
dc.identifierhttp://hdl.handle.net/11449/65112
dc.identifierhttp://acervodigital.unesp.br/handle/11449/65112
dc.identifier10.1016/S0370-2693(97)00396-1
dc.identifierWOS:A1997XC55000001
dc.identifier2-s2.0-0041761043
dc.identifierhttp://dx.doi.org/10.1016/S0370-2693(97)00396-1
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/886866
dc.descriptionInvestigation 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.
dc.languageeng
dc.relationPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectExperimental tests
dc.subjectFlavor symmetries
dc.subjectMeson production
dc.subjectQuark models
dc.titleProbing SU(2) symmetry breaking in the nucleon sea
dc.typeOtro


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