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

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dc.creatorHernández, E.
dc.creatorNieves, J.
dc.creatorVerde-Velasco, J. M.
dc.date2008-03-26
dc.date.accessioned2026-07-07T11:49:21Z
dc.date.available2026-07-07T11:49:21Z
dc.descriptionWe 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.description9 latex pages, 5 figures, 6 tables
dc.identifierhttps://arxiv.org/abs/0803.3672
dc.identifierhttp://arxiv.org/abs/0803.3672
dc.identifierPhys.Lett.B666:150-154,2008
dc.identifierdoi:10.1016/j.physletb.2008.07.007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203202
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleTest of the heavy quark-light diquark approximation for baryons with a heavy quark
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