A Primary Study of Heavy Baryons Lambda_Q, Xi_Q, Sigma_Q and Omega_Q
Nuclear Theory
2011-06-27 v5 High Energy Physics - Phenomenology
Abstract
We perform a preliminary study of the 1/2+ and 3/2+ ground-state baryons containing a heavy quark in the framework of the chiral SU(3) quark model. By using the calculus of variations, masses of Lambda_Q, Sigma_Q, Xi_Q, Omega_Q, Sigma_Q^*, Xi_Q^* and Omega_Q^*, where Q means c or b quark, are calculated. With taking reasonable model parameters, the numerical results of established heavy baryons are generally in agreement with the available experimental data, except that those of Xi_Q are somewhat heavier. For Omega_b with undetermined experimental mass and nobserved Xi_b^*, Omega_b^*, reasonable theoretical predictions are obtained. Interactions inside baryons are also discussed.
Keywords
Cite
@article{arxiv.1102.2659,
title = {A Primary Study of Heavy Baryons Lambda_Q, Xi_Q, Sigma_Q and Omega_Q},
author = {Qiao-Yan Zhao and Dan Zhang and Qiu-Yang Zhang},
journal= {arXiv preprint arXiv:1102.2659},
year = {2011}
}
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5 pages