Inclusive decays and lifetimes of doubly charmed baryons

TL;DR

This paper analyzes the weak decays and lifetimes of doubly charmed baryons using a heavy-light diquark model, providing clear predictions for their decay properties and branching ratios.

Contribution

It introduces a novel modeling approach treating doubly charmed baryons as heavy-light systems with a cc-diquark, leading to specific predictions for decay rates.

Findings

Predicted semileptonic branching ratios for doubly charmed baryons.

Calculated lifetimes of c^{++}, c^{+}, and c^{+} baryons.

Identified preasymptotic effects proportional to meson wave functions.

Abstract

We extend the analysis of weak decays of heavy hadrons to the case of doubly charmed baryons, \Xi_{cc}^{++}, \Xi_{cc}^{+} and \Omega_{cc}^{+}. Doubly charmed baryons are modeled as a heavy-light system containing a heavy cc-diquark and a light quark. Such a model leads to preasymptotic effects in semileptonic and nonleptonic decays which are essentially proportional to the meson wave function. Very clear predictions for semileptonic branching ratios and lifetimes of doubly charmed baryons are obtained.