Excited ${\Lambda }_Q$ Baryons in the Large $N_c$ Limit

Abstract

The spectrum of excited ${\Lambda }_Q$-type heavy baryons is considered in the large $N_c$ limit. The universal form factors for ${\Lambda }_b$ semileptonic decay to excited charmed baryons are calculated in the large $N_c$ limit. We find that the Bjorken sum rule (for the slope of the Isgur--Wise function) and Voloshin sum rule (for the mass of the light degrees of freedom) are saturated by the first doublet of excited ${\Lambda }_Q$ states.

9 pages, use phyzzx, CALT-68-1919

References in corpus (9)

• Chiral perturbation theory for hadrons containing a heavy quark: the sequel
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• Light Quark Spin-Flavor Symmetry for Baryons Containing a Heavy Quark in Large N QCD
• Properties of Baryons Containing a Heavy Quark in the Skyrme Model
• Baryons Containing a Heavy Quark as Solitons
• Hyperfine Mass Splittings of Baryons Containing a Heavy Quark in Large N QCD
• Hyperfine Splittings of Baryons Containing a Heavy Quark in the Skyrme Model
• Role of Light Vector Mesons in the Heavy Particle Chiral Lagrangian
• Heavy Quark Solitons

Cited by in corpus (21)

• A review of the open charm and open bottom systems
• $1/N_c$ Expansion for Excited Baryons
• Two body non-leptonic ${\Lambda }_b$ decays in quark model with factorization ansatz
• Electromagnetic Transitions of Heavy Baryons in the SU(2N_{f}) X O(3) Symmetry
• Semileptonic Lambda_b decay to excited Lambda_c baryons at order Lambda_{QCD}/m_Q
• Baryonium, tetra-quark state and glue-ball in large N_c QCD
• Radiative Decays of Excited ${\Lambda }_Q$ Baryons in the Bound State Picture
• Heavy Quark Solitons: Towards Realistic Masses
• New Universality of Baryon Isgur--Wise Form Factor in the Large $N_c$ limit
• Excited states of heavy baryons in the Skyrme model
• Excited Heavy Baryons and Their Symmetries III: Phenomenology
• Analysis of Lambda_b to Lambda_c Weak Decays in Heavy Quark Effective Theory
• Excited Heavy Baryons in the Bound State Picture
• Generalization of the Bound State Model
• First Observation of Bottom Baryon Sigma_b States at CDF
• Symmetries of Excited Heavy Baryons In The Heavy Quark And Large N_c Limit
• Model-Independent Predictions for Low Energy Isoscalar Heavy Baryon Observables in the Combined Heavy Quark and Large $N_c$ Expansion
• $1/m_Q$ and $1/N_c$ Expansions for Excited Heavy Baryons with Light Quarks in the Spin-Flavor Symmetric Representation
• Excited Heavy Baryons and Their Symmetries I: Formalism
• Conservation Laws and Sum Rules in the Heavy Quark Limit
• Excited Heavy Baryons and Their Symmetries II: Effective Theory