# QCD Sum Rules Analysis of Weak Decays of Doubly-Heavy Baryons

## TL;DR

This paper employs QCD sum rules to calculate weak decay form factors of doubly-heavy baryons, providing theoretical predictions for semileptonic decay processes that can be tested in future experiments.

## Contribution

It introduces a comprehensive QCD sum rules approach including perturbative and condensate contributions up to dimension five for doubly-heavy baryon decays.

## Key findings

- Perturbative contributions and low-dimension condensates dominate the form factors.
- Gluon-gluon condensates have a minor impact on the results.
- Predictions for semileptonic decay rates can be tested in future experiments.

## Abstract

We calculate the weak decay form factors of doubly-heavy baryons using three-point QCD sum rules. The Cutkosky rules are used to derive the double dispersion relations. We include perturbative contributions and condensation contributions up to dimension five, and point out that the perturbative contributions and condensates with lowest dimensions dominate. An estimate of part of gluon-gluon condensates show that it plays a less important role. With these form factors at hand, we present a phenomenological study of semileptonic decays. The future experimental facilities can test these predictions, and deepen our understanding of the dynamics in decays of doubly-heavy baryons.