Chiral Structure of the $b\rightarrow c$ Charged Current and the Semileptonic $Λ_b$ Decay

Details Chiral Structure of the $b\rightarrow c$ Charged Current and the Semileptonic $Λ_b$ Decay Chiral Structure of the $b\rightarrow c$ Charged Current and the Semileptonic $Λ_b$ Decay

1992-11-20

arxiv.org/abs/hep-ph/9211285v1

Phys.Rev. D47 (1993) 4969-4974

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages + 2 PostScript figures (submitted by 'figures' command)

Scientific paper

10.1103/PhysRevD.47.4969

Using the heavy quark effective theory, chiral structure of the $b\rightarrow c$ charged current can be determined by the semileptonic $\Lambda_b$ decay with satisfactory theoretical accuracy. We define an asymmetry which is sensitive to the chirality of the $b\rightarrow c$ charged current. We show that this asymmetry has no theoretical uncertainty in the heavy quark limit. It is also shown that $1/m_c$ correction to this asymmetry is small and disappears at the kinematical point of zero momentum transfer.

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