Predictions for masses of Xi_b baryons
High Energy Physics - Phenomenology
2007-06-23 v5 High Energy Physics - Experiment
Abstract
The recent observation by CDF of Sigma_b^{+-} (uub and ddb) baryons within 2 MeV of the predicted Sigma_b - Lambda_b splitting has provided strong confirmation for the theoretical approach based on modeling the color hyperfine interaction. We now apply this approach to predict the masses of the Xi_b family of baryons with quark content usb and dsb - the ground state Xi_b at 5790 to 5800 MeV, and the excited states Xi_b^' and Xi_b^*. The main source of uncertainty is the method used to estimate the mass difference m_b - m_c from known hadrons. We verify that corrections due to the details of the interquark potential and to Xi_b-Xi_b^' mixing are small.
Keywords
Cite
@article{arxiv.0706.2163,
title = {Predictions for masses of Xi_b baryons},
author = {Marek Karliner and Boaz Keren-Zur and Harry J. Lipkin and Jonathan L. Rosner},
journal= {arXiv preprint arXiv:0706.2163},
year = {2007}
}
Comments
Figure annotation amended