Topics on CP violation in B-meson decays
In this work several independent topics on CP violation in the B-meson decays are addressed. To begin with, the present constraints on the parameters of the Cabibbo-Kobayashi-Maskawa (CKM) matrix are discussed. Then, I calculate the CP-violating asymmetry in the radiative decays of the charged B-mesons: it only appears at the 2-loop level, but it can be large in the b {yields} d{gamma} decays. At this point, the possibility of using these decays to measure the CKM entry {vert_bar}V{sub td}{vert_bar} will be studied. I also consider the decays of the neutral B-mesons: the strong correlation between the asymmetries in B{sup 0} {yields} {Psi}K{sub S} and the B{sup 0} {yields} {pi}{sup +}{pi}{sup -} is suggested as a powerful test of the standard model (a simple extension of the model is given where the correlation disappears). Finally, I address the question of observing direct CP violation in comparing these two asymmetries. An ambiguity that may arise is resolved due to the role that is played by penguin diagram contributions to the decay amplitudes.
- Research Organization:
- Carnegie-Mellon Univ., Pittsburgh, PA (United States)
- OSTI ID:
- 121372
- Country of Publication:
- United States
- Language:
- English
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