The Cabibbo-favored hadronic weak decays of the $\Xi_c$ in the quark model

TL;DR

This paper investigates the decay mechanisms of certain charmed baryons using a non-relativistic quark model, emphasizing the importance of pole terms alongside traditional decay processes, and predicts asymmetry parameters for experimental validation.

Contribution

It introduces the significance of pole terms in the decay dynamics of $\Xi_c$ baryons, providing a more comprehensive understanding of their weak decay mechanisms.

Findings

Pole terms are essential for decay dynamics.

Predicted asymmetry parameters for experiments.

Clarifies the role of different decay processes.

Abstract

The Cabibbo-favored hadronic weak decay of the $\Xi_c^+\to \Xi^0\pi^+$, $\Xi_c^0\to \Xi^-\pi^+$, $\Xi_c^0\to \Xi^0\pi^0$, $\Xi_c^0\to \Xi^0\eta^{(')}$ and $\Xi_c^0\to \Xi^+K^-$ are studied in the non-relativistic constituent quark model. By analyzing their decay mechanisms at the quark level we show that the pole terms are essential for understanding the transition dynamics in addition to the usually considered direct meson emission process and color suppressed process in the charmed baryon hadronic weak decays. The experimentally measurable asymmetry parameters are also predicted in order to further pin down the decay mechanism.