https://doi.org/10.1140/epjc/s10052-014-2897-0
Regular Article - Theoretical Physics
Comprehensive Bayesian analysis of rare (semi)leptonic and radiative B decays
1
C2PAP, Universe Cluster, Ludwig-Maximilians-Universität München, Garching, Germany
2
Universe Cluster and Institute for Advanced Study, Technische Universität München, Garching, Germany
3
Theoretische Elementarteilchenphysik, Universität Siegen, Siegen, Germany
* e-mail: bobeth@ph.tum.de
Received:
14
February
2014
Accepted:
9
May
2014
Published online:
3
June
2014
The available data on |∆B| = |∆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 C7, C9, C10, 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 → 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 → K and B → K* transitions.
© SIF and Springer-Verlag Berlin Heidelberg, 2014