Observation of the $\Xi_c^+$ Charmed Baryon Decays to $\Sigma^+ K^-\pi^+$, $\Sigma^+ \bar{K}^{*0}$, and $\Lambda K^-\pi^+\pi^+$

TL;DR

This paper reports the first observation of two new decay modes of the $\\Xi_c^+$ baryon and measures their branching fractions relative to a known decay, enhancing understanding of charmed baryon decays.

Contribution

The study presents the first observation of $\\Xi_c^+$ decays to $\\Sigma^+ K^-\pi^+$ and $\\Sigma^+ \bar{K}^{*0}$, and measures their branching fractions relative to a known mode.

Findings

Observed two new decay modes of $\\Xi_c^+$.

Measured branching fractions relative to $\\Xi_c^+\to\Xi^-\pi^+\pi^+$.

First measurement of the branching fraction for $\\Xi_c^+\to\Lambda K^-\pi^+\pi^+$.

Abstract

We have observed two new decay modes of the charmed baryon $\Xi_c^+$ into $\Sigma^+ K^-\pi^+$ and $\Sigma^+ \bar{K}^{*0}$ using data collected with the CLEO II detector. We also present the first measurement of the branching fraction for the previously observed decay mode $\Xi_c^+\to\Lambda K^-\pi^+\pi^+$. The branching fractions for these three modes relative to $\Xi_c^+\to\Xi^-\pi^+\pi^+$ are measured to be $1.18 \pm 0.26 \pm 0.17$, $0.92 \pm 0.27 \pm 0.14$, and $0.58 \pm 0.16 \pm 0.07$, respectively.