The ultimate theoretical error on gamma from B -> D K decays
Abstract
The angle gamma of the standard CKM unitarity triangle can be determined from B -> D K decays with a very small irreducible theoretical error, which is only due to second-order electroweak corrections. We study these contributions and estimate that their impact on the gamma determination is to introduce a shift |delta gamma| <~ O(10-7), well below any present or planned future experiment.
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