Hyperfine mixing in electromagnetic decay of doubly heavy $bc$ baryons

Abstract

We 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 $b\to c$ 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 can not use electromagnetic width relations obtained in the infinite heavy quark mass limit to experimentally extract information on the admixtures in a model independent way.

9 Latex pages, 4 tables. A new reference added. A few misprints corrected

References in corpus (3)

• Heavy Baryons in a Quark Model
• Static properties and semileptonic decays of doubly heavy baryons in a nonrelativistic quark model
• Hyperfine mixing in $b\to c$ semileptonic decay of doubly heavy baryons

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