Semileptonic $\Xi_c$ baryon decays in the light cone QCD sum rules

TL;DR

This paper calculates the form factors for semileptonic $\Xi_c$ baryon decays using light cone QCD sum rules, providing theoretical predictions for decay rates and comparing them with experimental data.

Contribution

It introduces a method to eliminate pollution from negative parity baryons in form factor calculations within light cone QCD sum rules.

Findings

Calculated decay form factors for $\Xi_c o \Xi(\Lambda)$ transitions.

Predicted branching ratios for $\Xi_c o \\Xi (\\Lambda) \\ell u$ decays.

Results are consistent with experimental measurements from BELLE and ALICE.

Abstract

Form factors of the weak $\Xi_c \to \Xi(\Lambda)$ transitions are calculated within the light cone QCD sum rules. The pollutions coming from the contribution of the negative parity $\Xi_c^*$ baryon is eliminated by considering the combinations of sum rules corresponding to the different Lorentz structures. Having obtained the form factors, the branching ratios of the $\Xi_c \to \Xi (\Lambda) \ell \nu$ decays are also calculated, and our predictions are compared with the results of other approaches as well as the measurements done by BELLE and ALICE Collaborations.