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.

17 pages, 4 figures

References in corpus (2)

• Enhanced effects on extracting γfrom untagged B^0 and B_s decays
• CP violation effects on the measurement of $\gamma$ from $B\to DK$

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