Chiral Structure of the $b\to c$ Charged Current and the Semileptonic ${\Lambda }_b$ Decay

Abstract

Using the heavy quark effective theory, chiral structure of the $b\to c$ 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 $b\to c$ 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.

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

References in corpus (2)

• On Testing V-A in Lambda_b Decays
• Test for Right-Handed $b$ Quark Decays

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• Unparticle physics effects in (Lambda_b -> Lambda + missing energy) processes
• Right-Handed Currents in B Decay Revisited
• Testing the chirality of b to u current with B^0 \to ρ^ - \ell^+ ν