# Singly Cabibbo suppressed decays of $\Lambda_{c}^+$ with SU(3) flavor symmetry

## TL;DR

This paper uses SU(3) flavor symmetry and topological quark diagrams to analyze and predict decay rates of $ ext{Lambda}_c^+$ baryons, including previously neglected contributions, aligning well with existing data and providing testable predictions.

## Contribution

It introduces the first analysis of $ ext{Lambda}_c^+$ decays considering ${
m O}(ar{15})$ contributions within the SU(3) symmetry framework, enhancing the understanding of singly Cabibbo suppressed decays.

## Key findings

- Predicted $ ext{Lambda}_c^+ o p \pi^0$ branching ratio of $(1.3 extpm0.7) imes 10^{-4}$.
- Results are consistent with experimental data for Cabibbo allowed and suppressed decays.
- Provides testable predictions for ongoing and future experiments at BESIII and Belle-II.

## Abstract

We analyze the weak processes of anti-triplet charmed baryons decaying to octet baryons and mesons with the SU(3) flavor symmetry and topological quark diagram scheme. We study the decay branching ratios without neglecting the contributions from ${\cal O}(\overline{15})$ for the first time in the SU(3) flavor symmetry approach. The fitting results for the Cabibbo allowed and suppressed decays of $\Lambda_{c}^+$ are all consistent with the experimental data. We predict all singly Cabibbo suppressed decays. In particular, we find that ${\cal B}(\Lambda_c^+\to p \pi^0)=(1.3\pm0.7)\times 10^{-4}$, which is slightly below the current experimental upper limit of $2.7\times 10^{-4}$ and can be tested by the ongoing experiment at BESIII as well as the future one at Belle-II.