Estimates of W-exchange contributions to $\Xi_{cc}$ decays

TL;DR

This paper estimates the W-exchange contributions to the decay processes of doubly charmed baryons, revealing their significance and providing the first nonfactorizable estimates using a pole model approach.

Contribution

It introduces the first estimates of nonfactorizable W-exchange contributions to $\\Xi_{cc}$ decays using a pole model, highlighting their importance.

Findings

W-exchange contributions are sizable in $\\Xi_{cc}$ decays.

Branching ratios for various decay modes are calculated.

W-exchange effects cannot be ignored in decay analyses.

Abstract

Encouraged by recent discovery of $\Xi_{cc}^{++}$ baryon, we investigate two body non-leptonic weak decays of doubly charmed, $\Xi_{cc}$, baryons. We calculate the branching ratios for CKM-favored and suppressed modes in factorization and pole model approach. We give the first estimates of nonfactorizable W-exchange contributions using pole model. We find that W-exchange contributions to $\Xi_{cc}$ decays being sizable can not be ignored.