Determination of the angle γ from nonleptonic B < inf > c < /inf > → D < inf > s < /inf > D < sup > 0 < /sup > decays

Abstract

We note that the two-body nonleptonic pure tree decays Bc±→Ds±D0(D̄ 0) and the corresponding vector-vector modes Bc±→D*s± D*0(D̄*0) are well suited to extract the weak phase γ of the unitarity triangle. The CP violating phase γ can be determined cleanly as these decay modes are free from the penguin pollutions. © 2002 The American Physical Society.