Model-Independent Bottom Baryon Mass Predictions in the 1/N Expansion

Abstract

Recent discoveries of the Xi_b, Sigma_b and Sigma_b^* baryons at the Tevatron are in good agreement with model-independent mass predictions made a decade ago based on a combined expansion in 1/N_c, 1/m_Q and SU(3) flavor symmetry breaking. Using the new experimental data as input, mass predictions for the undiscovered bottom baryons Xi_b^\prime, Xi_b^*, Omega_b and Omega_b^* and for many unmeasured bottom baryon mass splittings are updated. The observed ground state charm baryons exhibit the mass hierarchy previously predicted by the 1/N_c, 1/m_Q and SU(3) flavor breaking expansion.

15 pages

References in corpus (1)

• Direct observation of the strange b baryon Xi_b^{-}

Cited by in corpus (21)

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• Bottom baryons from a dynamical lattice QCD simulation
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• Precision measurement of the mass and lifetime of the ${\Xi }_b^0$ baryon
• Precision measurement of the mass and lifetime of the Xi_b^- baryon
• Mass and lifetime measurements of bottom and charm baryons in $p\bar{p}$ collisions at $\sqrt{s}= 1.96 TeV
• Baryon resonances in large $N_c$ QCD
• Heavy quark spectroscopy and prediction of bottom baryon masses
• Charm and bottom baryon masses in the combined $1/N_c$ and $1/m_Q$ expansion versus quark model
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• Nonleptonic decays of ${\Xi }_{cc}\to {\Xi }_c\pi$ with ${\Xi }_c-{\Xi }_c^{\prime }$ mixing
• Semileptonic decays of doubly charmed baryons with ${\Xi }_c-{\Xi }_c^{\prime }$ mixing
• Bottom-Hadron Mass Splittings from Static-Quark Action on 2+1-Flavor Lattices
• An introduction to the quark model
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