A new method for extracting the weak phase gamma from B ---> D K(*) decays

Abstract

A new method to extract the weak phase ${\hat{I}}^3$ is suggested by exploiting B ---> D K^{(*)} decay modes that are not Cabibbo suppressed, using the isospin relations, and ignoring the annihilation diagram as usual. Assuming $3\times 10^{8}B\bar{B}$ pair at $B$ factories, one can determine ${\hat{I}}^3$ with $3-\ddot{I}ƒ$ accuracy for 80^o < ${\hat{I}}^3$ < 150^o using B ---> D K modes and for 50^o < ${\hat{I}}^3$ < 170^o using B ---> D K^* modes.

10 pages with 2 figures