Improved Methods for Observing CP Violation in B+/- --> K+/- D0 and Measuring the CKM Phase gamma

Details Improved Methods for Observing CP Violation in B+/- --> K+/- D0 and Measuring the CKM Phase gamma Improved Methods for Observing CP Violation in B+/- --> K+/- D0 and Measuring the CKM Phase gamma

2000-08-09

arxiv.org/abs/hep-ph/0008090v2

Phys.Rev. D63 (2001) 036005

Physics

High Energy Physics

High Energy Physics - Phenomenology

51 pages 8 figures, typo in equation 33 corrected

Scientific paper

10.1103/PhysRevD.63.036005

Various methods are discussed for obtaining the CKM angle gamma through the interference of the charged B-meson decay channels B- -> K- D0 and B- -> K- D0-bar where the D0 and D0-bar decay to common final states. It is found that choosing final states which are not CP eigenstates can lead to large direct CP violation which can give significant bounds on gamma without any theoretical assumptions. If two or more modes are studied, gamma may be extracted with a precision on the order of +/-15 degrees given about 10^8 B-mesons. We also discuss the case of three body decays of the D0 where additional information may be obtained from the distribution of the D0 decay products and consider the impact of D-D-bar oscillations.

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