Test for Right-Handed $b$ Quark Decays
  Gronau and Wakaizumi have proposed a model in which the dominant $b$ decays are due to exchange of a new right-handed gauge boson. A test of this model via the study of polarized $\Lambda_b$ baryons produced in $e^+ e^- \to Z \to \Lambda_b + X$ is suggested. 
James F. Amundson, Jonathan L. Rosner, and Mihir Worah (University of   Chicago), and Mark B. Wise (California Institute of ...