On Testing V-A in Lambda_b Decays

Abstract

We comment on a recent suggestion by Amundson, Rosner, Worah and Wise to test the chirality of the $b$-quark decay coupling via polarized ${\Lambda }_b$ baryons produced in $e^{+}{e}^{-}\to Z\to {\Lambda }_b+X$. We study the effect of contributions from an amplitude in which a right-handed $b$ to $c$ current couples to a V-A lepton current.

Comments: (6 pages, PHYZZX, 1 figure, available upon request), SLAC-PUB-5892