Light quark decays of doubly heavy baryons in light front approach

We explore the semileptonic and nonleptonic decays of doubly heavy baryons (Omega((*)+)(cc) , (Omega((*)0)(bb) , (Omega((*)'0)(bc) ) induced by the s -> u transition. Hadronic form factors are parametrized by transition matrix elements and are calculated in the light front quark model. With the form factors, we make use of helicity amplitudes and analyze semileptonic and nonleptonic decay modes of doubly heavy baryons. Benchmark results for partial decay widths, branching fractions, forward-backward asymmetries and other phenomenological observables are derived. We find that typical branching fractions for semileptonic decays into l (v) over bar are at the order 10(-7) - 10(-8) and the ones for nonleptonic decays are at the order 10(-5), which are likely detectable such as in LHCb experiment. With the potential data accumulated in future, our results may help to shape our understanding of the decay mechanism in the presence of two heavy quarks.

Automated summary

We study the semileptonic and nonleptonic decays of doubly heavy baryons induced by the s -> u transition. The hadronic form factors are calculated using the light front quark model, and we analyze the decay modes of doubly heavy baryons using helicity amplitudes. Our results provide benchmark values for various observables and suggest that these decays are likely detectable in experiments such as LHCb. The potential data accumulated in the future can further enhance our understanding of the decay mechanism in the presence of two heavy quarks.