Possibility of extracting the weak phase γ from Λ < inf > b < /inf > → ΛD < sup > 0 < /sup > decays

Abstract

We explore the possibility of extracting the weak phase γ from pure tree decays Λb → Λ(D0,D 0̄, DCP0) in a model independent way. We find the CP violating phase γ can be determined cleanly without any hadronic uncertainties. Furthermore, these decays are free from the penguin pollution and neither tagging nor time dependent studies are required for the extraction.