2007/06/14 by Marek Karliner, Karliner, Marek, Boaz Keren-Zur +5 · 5 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.48550/arxiv.0706.2163
Figure annotation amended
arxiv created 2007/06/23 · arxiv updated 2009/12/01
The recent observation by CDF of Sigmab+- (uub and ddb) baryons within 2 MeV of the predicted Sigmab - Lambdab 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 Xib family of baryons with quark content usb and dsb - the ground state Xib at 5790 to 5800 MeV, and the excited states Xib^' and Xib^*. The main source of uncertainty is the method used to estimate the mass difference mb - mc from known hadrons. We verify that corrections due to the details of the interquark potential and to Xib-Xib^' mixing are small.