Searching for New Physics via CP Violation in B -> pi pi

Details Searching for New Physics via CP Violation in B -> pi pi Searching for New Physics via CP Violation in B -> pi pi

2001-03-18

arxiv.org/abs/hep-ph/0103196v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, LaTeX, 1 figure. Uses two-column style file ltwol.sty. To be published in the Proceedings of the Fourth International

Scientific paper

We show how B -> pi pi decays can be used to search for new physics in the b -> d flavour-changing neutral current. One needs one piece of theoretical input, which we take to be a prediction for P/T, the ratio of the penguin and tree amplitudes in Bd -> pi+ pi-. If present, new physics can be detected over most of the parameter space. If \alpha (\phi_2) can be obtained independently, measurements of B+ -> pi+ pi0 and Bd/Bd(bar) -> pi0 pi0 are not even needed.

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