Analysis of Lambda_b to Lambda_c Weak Decays in Heavy Quark Effective Theory

Abstract

The Lambda_b to Lambda_c semileptonic decay is analyzed in the framework of heavy quark effective theory to the order of 1/m_c and 1/m_b. The QCD sum rule and large N_c predictions to the decay form factors are applied. It argues that the subleading baryonic Isgur-Wise function in the large N_c limit vanishes. The decay rates, distributions and asymmetry parameters are calculated numerically. Some of the nonleptonic decay modes are discussed in the end.

20 pages, latex, 4 figures, to appear in Phys. Rev. D (1998)

References in corpus (5)

• Heavy Baryon Transitions in a Relativistic Three-Quark Model
• Nonleptonic Weak Decays of Bottom Baryons
• Exclusive Nonleptonic Decays of Bottom and Charm Baryons in a Relativistic Three-Quark Model: Evaluation of Nonfactorizing Diagrams
• Infinite Momentum Frame Calculation of Semileptonic Heavy Λ_b\toΛ_c Transitions Including HQET Improvements
• Heavy Baryon Masses in Large N_c HQET

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