Comprehensive Bayesian analysis of rare (semi)leptonic and radiative \varvec{B} decays |
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Authors: | Frederik Beaujean Christoph Bobeth Danny van Dyk |
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Institution: | 1. C2PAP, Universe Cluster, Ludwig-Maximilians-Universit?t München, Garching, Germany 2. Universe Cluster and Institute for Advanced Study, Technische Universit?t München, Garching, Germany 3. Theoretische Elementarteilchenphysik, Universit?t Siegen, Siegen, Germany
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Abstract: | The available data on \(|\Delta B| = |\Delta S| = 1\) decays are in good agreement with the Standard Model when permitting subleading power corrections of about \(15\,\%\) at large hadronic recoil. Constraining new-physics effects in \(\mathcal {C}_{7}^{\mathrm {}}\) , \(\mathcal {C}_{9}^{\mathrm {}}\) , \(\mathcal {C}_{10}^{\mathrm {}}\) , the data still demand the same size of power corrections as in the Standard Model. In the presence of chirality-flipped operators, all but one of the power corrections reduce substantially. The Bayes factors are in favor of the Standard Model. Using new lattice inputs for \(B\rightarrow K^*\) form factors and under our minimal prior assumption for the power corrections, the favor shifts toward models with chirality-flipped operators. We use the data to further constrain the hadronic form factors in \(B\rightarrow K\) and \(B\rightarrow K^*\) transitions. |
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