Towards a Precision Determination of alpha in B → pi pi Decays
Gardner, Susan
Original · EN
An assumption of isospin symmetry permits the determination of sin(2 alpha) from the experimental study of B→ pi pi decays. Isospin, however, is merely an approximate symmetry; its breaking predicates a theoretical systematical error sigmaα IB in the extraction of alpha. We focus on the impact of π⁰-η,η′ mixing, as well as the manner in which it is amenable to empirical constraint, and determine that σα IB can potentially be controlled to O(1∘).
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