English

Charmed Baryons with $J = 3/2$

High Energy Physics - Phenomenology 2016-08-24 v1

Abstract

The width of a recently discovered excited charmed-strange baryon, a candidate for a state Ξc\Xi_c^* with spin 3/2, is calculated. In the absence of configuration mixing between the ground-state (spin-1/2) charmed-strange baryon Ξc(a)\Xi_c^{(a)} and the spin-1/2 state Ξc(s)\Xi_c^{(s)} lying about 95 MeV above it, one finds Γ~(ΞcΞc(a)π)=(3/4)Γ~(ΞΞπ)\tilde \Gamma(\Xi^*_c \to \Xi_c^{(a)} \pi) = (3/4) \tilde \Gamma(\Xi^* \to \Xi \pi) and Γ~(ΞcΞc(s)π)=(1/4)Γ~(ΞΞπ)\tilde \Gamma(\Xi^*_c \to \Xi_c^{(s)} \pi) = (1/4) \tilde \Gamma(\Xi^* \to \Xi \pi), where the tilde denotes the partial width with kinematic factors removed. Assuming a kinematic factor for P-wave decay of pcm3p_{\rm cm}^3, one predicts Γ(ΞcΞc(a)π)=2.3\Gamma(\Xi^*_c \to \Xi_c^{(a)} \pi) = 2.3 MeV, while the ΞcΞc(s)π\Xi^*_c \to \Xi_c^{(s)} \pi channel is closed. Some suggestions are given for detecting the Σc\Sigma_c^*, the spin-3/2 charmed nonstrange baryon, and the Ωc\Omega_c^*, the spin-3/2 charmed doubly-strange baryon.

Keywords

Cite

@article{arxiv.hep-ph/9508252,
  title  = {Charmed Baryons with $J = 3/2$},
  author = {Jonathan L. Rosner},
  journal= {arXiv preprint arXiv:hep-ph/9508252},
  year   = {2016}
}

Comments

11 pages, latex, 2 uuencoded figures sent separately

R2 v1 2026-07-22T14:27:12.381Z