Exclusive semileptonic decays of ground-state $cb$ baryons driven by a $c\to s,d$ quark transition

TL;DR

This paper calculates semileptonic decay processes of doubly heavy $cb$ baryons involving $c o s,d$ transitions, verifying form factors against heavy quark symmetry constraints.

Contribution

It provides detailed evaluations of decay form factors for $cb$ baryons and tests their consistency with heavy quark spin symmetry.

Findings

Form factors agree with heavy quark symmetry predictions.

Decay rates and distributions are computed for specific transitions.

Results support the validity of heavy quark symmetry in these decays.

Abstract

We evaluate semileptonic decays of spin-1/2 and spin-3/2 doubly heavy $cb$ baryons. The decays are driven by a $c\to s,d$ transition at the quark level. We check our results for the form factors against heavy quark spin symmetry constraints obtained in the limit of very large heavy quark masses and near zero recoil.