Properties of doubly heavy baryons in QCD

TL;DR

This paper reviews the properties of doubly heavy baryons using QCD sum rules, focusing on their masses, strong couplings, and radiative decays, providing insights into their phenomenology and decay dynamics.

Contribution

It presents a comprehensive review of doubly heavy baryon properties calculated via QCD sum rules, including mass, coupling constants, and decay estimates, highlighting recent theoretical advancements.

Findings

Mass and strong coupling constants determined for doubly heavy baryons.

Radiative decay rates estimated using vector dominance model.

Insights into semileptonic decay processes discussed.

Abstract

The study of the properties of doubly heavy baryons represents a promising area in particle physics. It can provide us with information about Cabibbo-Kobayashi-Maskawa (CKM) matrix elements and the low energy dynamics of QCD. They have a very rich phenomenology. The investigation of weak, electromagnetic, and strong decays has vital importance for understanding the dynamics of doubly heavy baryons. The main ingredients of such studies are the spectroscopic parameters, the strong coupling constants, and the transition form factors. For calculations of these quantities, non-perturbative methods are needed. One of these methods is the QCD sum rules. In the present work, we review our studies on the properties of the doubly heavy baryons within the sum rules method, focusing mainly on the mass and strong coupling constants of the doubly heavy baryons. In addition, the radiative decays of doubly heavy baryons are estimated using the vector dominance model. We also make few remarks on the semileptonic decays of the doubly heavy baryons.