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Hyperfine mixing in electromagnetic decay of doubly heavy bc baryons

AuthorsNieves, Juan Miguel ; Hernández, Eliecer; Albertus, Conrado
Issue Date21-Jun-2010
CitationPhysics Letters - Section B 690 (3): 265-271 (2010)
AbstractWe investigate the role of hyperfine mixing in the electromagnetic decay of ground state doubly heavy bc baryons. As in the case of a previous calculation on b -> c semileptonic decays of doubly heavy baryons, we find large corrections to the electromagnetic decay widths due to this mixing. Contrary to the weak case just mentioned, we find here that one cannot use electromagnetic width relations obtained in the infinite heavy quark mass limit to experimentally extract information on the admixtures in a model independent way.
Publisher version (URL)http://dx.doi.org/10.1016/j.physletb.2010.05.042
Appears in Collections:(IFIC) Artículos
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