Abstract
The angle γ of the standard CKM unitarity triangle can be determined from B → DK 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 γ determination is to introduce a shift |δγ| ≲ \( \mathcal{O}\left( {1{0^{-7 }}} \right) \), well below any present or planned future experiment.
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Brod, J., Zupan, J. The ultimate theoretical error on γ from B → DK decays. J. High Energ. Phys. 2014, 51 (2014). https://doi.org/10.1007/JHEP01(2014)051
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DOI: https://doi.org/10.1007/JHEP01(2014)051