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Test of the heavy quark-light diquark approximation for baryons with a heavy quark

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Test of the heavy quark-light diquark approximation for baryons with a heavy quark

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dc.contributor.author Hernández Gajate, Eliecer
dc.contributor.author Nieves Pamplona, Juan Miguel
dc.contributor.author Verde Velasco, José María
dc.date.accessioned 2014-10-22T11:08:05Z
dc.date.available 2014-10-22T11:08:05Z
dc.date.issued 2008
dc.identifier.citation Hernández Gajate, Eliecer Nieves Pamplona, Juan Miguel Verde Velasco, José María 2008 Test of the heavy quark-light diquark approximation for baryons with a heavy quark Physics Letters B 666 2 150 154
dc.identifier.uri http://hdl.handle.net/10550/39301
dc.description.abstract We check a commonly used approximation in which a baryon with a heavy quark is described as a heavy quark-light diquark system. The heavy quark influences the diquark internal motion reducing the average distance between the two light quarks. Besides, we show how the average distance between the heavy quark and any of the light quarks, and that between the heavy quark and the center of mass of the light diquark. are smaller than the distance between the two light quarks, which seems to contradict the heavy quark-light diquark picture. This latter result is in agreement with expectations from QCD sum rules and lattice QCD calculations. Our results also show that the diquark approximations produces larger masses than the ones obtained in a full calculation.
dc.language.iso eng
dc.relation.ispartof Physics Letters B, 2008, vol. 666, num. 2, p. 150-154
dc.subject Física
dc.title Test of the heavy quark-light diquark approximation for baryons with a heavy quark
dc.type journal article es_ES
dc.date.updated 2014-10-22T11:08:05Z
dc.identifier.doi 10.1016/j.physletb.2008.07.007
dc.identifier.idgrec 068563
dc.rights.accessRights open access es_ES

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