An overview of $\Lambda_c$ decays

TL;DR

This paper reviews the current understanding of $ ext{ extLambda}_c$ baryon decays, highlighting remaining open questions and their implications for weak processes, lattice QCD calculations, and missing decay modes.

Contribution

It provides an overview of $ ext{ extLambda}_c$ decay data, discusses unresolved issues, and suggests directions for future research in weak decay mechanisms and resonance contributions.

Findings

Decays of $ ext{ extLambda}_c$ are nearly fully mapped out.

Remaining questions relate to weak processes and form factors.

Identifies missing decay modes like $ ext{ extLambda}_c o ext{ extLambda}^* ext{ extell}^+ u_ ext{ extell}$.

Abstract

The decays of the ground-state charmed baryon $\Lambda_c$ are now close to being completely mapped out. In this paper we discuss some remaining open questions, whose answers can help shed light on weak processes contributing to those decays, on calculations of such quantities as transition form factors in lattice QCD, and on missing decay modes such as $\Lambda_c \to \Lambda^* \ell^+ \nu_\ell$, where $\Lambda^*$ is an excited resonance. The discussion is in part a counterpart to a previous analysis of inclusive $D_s$ decays.