Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-11-08
Physics
High Energy Physics
High Energy Physics - Phenomenology
Lecture presented at the 25th SLAC Summer Institute on Particle Physics. 39 pgs. (Latex) with 4 figs. (epsf). Uses ssi.sty (in
Scientific paper
We explore the possibility of using CP violation in B decays to detect the presence of physics beyond the Standard Model. We first study the possibility of new physics in the $B-\bar B$ mixing amplitude. We discuss a construction to extract information about the phase and magnitude of the new physics contribution, as well as the CKM parameters in a model independent way. We point out the difficulty of carrying through this program induced by hadronic uncertainties and discrete ambiguities, and suggest additional measurements to overcome these problems. We then study the possibility of new physics contributions to the B meson decay amplitudes. We emphasize the sensitivity of the $B\to \phi K_S$ decay to these new contributions, and explain how this sensitivity can be quantified using experimental data on SU(3) related decays. Finally, we analyse a number of models where the B decay amplitudes are modified.
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