Predictions for masses of bottom baryons

Abstract

The recent observation of Sigma_b^{+-} (uub and ddb) and Xi_b^- (dsb) baryons at the Tevatron within 2 MeV of our theoretical predictions provides a strong motivation for applying the same theoretical approach, based on modeling the color hyperfine interaction, to predict the masses of other bottom baryons which might be observed in the foreseeable future. For S-wave qqb states we predict M(Omega_b) = 6052.1+-5.6 MeV, M(Omega^*_b) = 6082.8+-5.6 MeV, and M(Xi_b^0) = 5786.7 +- 3.0 MeV. For states with one unit of orbital angular momentum between the b quark and the two light quarks we predict M(Lambda_{b[1/2]}) = 5929+-2 MeV, M(Lambda_{b[3/2]}) = 5940+-2 MeV, M(Xi_{b[1/2]}) = 6106+-4 MeV, and M(Xi_{b[3/2]}) = 6115+-4 MeV.

LaTeX, 11 pages, no figures

References in corpus (4)

• Improved Tests of Relations for Baryon Isomultiplet Splittings
• The Constituent Quark Model Revisited - Quark Masses, New Predictions for Hadron Masses and KN Pentaquark
• The New Sigma_b multiplet, heavy baryon mass predictions, meson-baryon universality and magnetic moments of Lambda_c and Lambda_b
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Cited by in corpus (9)

• Baryons with two heavy quarks: Masses, production, decays, and detection
• The Quark Model and $b$ Baryons
• Reanalysis of the heavy baryon states ${\Omega }_b$, ${\Omega }_c$, ${\Xi }_b^{\prime }$, ${\Xi }_c^{\prime }$, ${\Sigma }_b$ and ${\Sigma }_c$ with QCD sum rules
• Isospin splittings in baryons with two heavy quarks
• Prospects for observing the lowest-lying odd-parity ${\Sigma }_c$ and ${\Sigma }_b$ baryons
• Structure of the ${\Xi }_b(6227{)}^{-}$ Resonance
• Analysis of ${\Omega }_b^{-}(bss)$ and ${\Omega }_c^0(css)$ with QCD sum rules
• Heavy quark spectroscopy and prediction of bottom baryon masses
• Heavy Baryons and Exotics Spectrum