A New Measurement of the Masses and Widths of the Sigma_c^*++ and Sigma_c^*0 Charmed Baryons

TL;DR

This paper reports new measurements of the masses and decay widths of the Sigma_c^*++ and Sigma_c^*0 charmed baryons using data from the CLEO III detector, providing more precise properties of these particles.

Contribution

The study presents the first precise measurements of the masses and widths of Sigma_c^*++ and Sigma_c^*0 baryons using CLEO III data, improving existing knowledge.

Findings

Gamma(Sigma_c^{*++})=14.4^{+1.6}_{-1.5}±1.4 MeV

Gamma(Sigma_c^{*0})=16.6^{+1.9}_{-1.7}±1.4 MeV

Mass differences around 231.5 MeV and 231.4 MeV

Abstract

Using data recorded by the CLEO III detector at CESR, we have made measurements of some properties of the Sigma_c^{*++} and Sigma_c^{*0} charmed baryons. In particular: Gamma(Sigma_c^{*++})=14.4^{+1.6}_{-1.5}+-1.4 MeV, M(Sigma_c^{*++})-M(Lambda_c^+) = 231.5+-0.4+-0.3 MeV, Gamma(Sigma_c^{*0})=16.6^{+1.9}_{-1.7}+-1.4 MeV, M(Sigma_c^{*0})-M(Lambda_c^+) = 231.4+-0.5+-0.3 MeV.