QCD Sum Rule Analysis for the Λ_b to Λ_c Semileptonic Decay

Details QCD Sum Rule Analysis for the Λ_b to Λ_c Semileptonic Decay QCD Sum Rule Analysis for the Λ_b to Λ_c Semileptonic Decay

1996-08-09

arxiv.org/abs/hep-ph/9608277v1

Phys.Lett.B387:379-385,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

LateX, 16 pages including 3 figs, to appear in Phys. Lett.B

Scientific paper

10.1016/0370-2693(96)01029-5

The 1/m_c and 1/m_b corrections to the \Lambda_b to \Lambda_c semi- leptonic decay are analyzed by QCD sum rules. Within the framework of heavy quark effective theory,the subleading baryonic Isgur-Wise func- tion of \Lambda_b to \Lambda_c has been calculated. It is shown that the corrections due to the 1/m Lagrangian insertion are negligibly small. The sizable 1/m_Q effect to the decay lies only in the weak current. The decay spectrum and the branching ratio are given.

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