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.

arXiv comment15 pages

References in corpus (10)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The 1/N Expansion for Baryons
• Spin-Flavor Structure of Large N Baryons
• Heavy Baryon Masses in the $1/m_Q$ and $1/N_c$ Expansions
• First Observation of Heavy Baryons Σ_b and Σ_b^*
• Observation of an Excited Charm Baryon OmegaC* Decaying to OmegaC0 Gamma
• Direct observation of the strange b baryon Xi_b^{-}
• Observation and Mass Measurement of the Baryon ${\Xi }_b^{-}$
• Observation of Two Narrow States Decaying into ${\Xi }_c^{+}\gamma$ and ${\Xi }_c^0\gamma$

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