Lifetimes of doubly heavy baryons

TL;DR

This paper investigates the total lifetimes of doubly heavy baryons using operator product expansion and nonrelativistic QCD approximations to provide theoretical lifetime estimates.

Contribution

It offers a detailed theoretical analysis of doubly heavy baryon lifetimes employing OPE and nonrelativistic QCD, which is a novel approach in this context.

Findings

Calculated lifetimes of doubly heavy baryons.

Provided estimates for matrix elements using nonrelativistic QCD.

Enhanced understanding of heavy baryon decay properties.

Abstract

We perform a detailed investigation of total lifetimes for the doubly heavy baryons $\Xi_{QQ'}$, $\Omega_{QQ'}$ in the framework of operator product expansion over the inverse heavy quark mass, whereas, to estimate matrix elements of operators obtained in OPE, approximations of nonrelativistic QCD are used.