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Measurements of New Physics in B -> pi pi Decays

Seungwon Baek, F. J. Botella, David London, Joao P. Silva

hep-pharXiv:hep-ph/0509322

Abstract

If new physics (NP) is present in B -> pi pi decays, it can affect the isospin I=2 or I=0 channels. In this paper, we discuss various methods for detecting and measuring this NP. The techniques have increasing amounts of theoretical hadronic input. If NP is eventually detected in B -> pi pi -- there is no evidence for it at present -- one will be able to distinguish I=2 and I=0, and measure its parameters, using these methods.

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