Semileptonic bc to cc Baryon Decay and Heavy Quark Spin Symmetry - High Energy Physics - Phenomenology

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Abstract: We study the semileptonic decays of the lowest-lying bc baryons to thelowest-lying cc baryons Xi {bc}^{\prime*}-> Xi {cc}^{*} andOmega {bc}^{\prime*}-> Omega {cc}^{*}, in the limit m b, m c >>Lambda {QCD} and close to the zero recoil point. The separate heavy quark spinsymmetries make it possible to describe all these decays using a single formfactor. We recover results derived previously by White and Savage in a mannerwhich we think is more straightforward and parallels the method applied laterto study Bc semileptonic decays. We further discuss the resemblance between thebc baryon decays and those of Bc mesons to eta c and J-\psi mesons and commenton the relation between the slopes of the single functions describing each setof decays. Our results can straightforwardly be applied to the decays of bbbaryons to bc baryons.

Autor: Jonathan M. Flynn, Juan Nieves

Fuente: https://arxiv.org/