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

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

2007-12-03

arxiv.org/abs/0712.0406v1

Phys.Rev.D77:034012,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages

Scientific paper

10.1103/PhysRevD.77.034012

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.

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