Penguin decays of B mesons
A. Biswas
Full text: pdf
Published on: April 10, 2025
Abstract
We propose a set of optimized observables using penguin mediated $\bar{B}_d$ and $\bar{B}_s$ decays to $K^{(*)}\bar{K}^{(*)}$ and $K^*\phi$ final states that exhibhit a reduced sensitivity to power corrections than the corresponding branching ratios. Using these observables, branching ratios for the related vector-vector and pseudoscalar-pseudoscalar modes and branching ratios for modes involving other relevant pseudoscalar-vector final states ($K\phi$, $K^*\bar{K})$, we attempt to resolve the emergent combined pattern by assuming new physics contributions to the weak effective operators at the scale of the mass of the $b$ quark that are already present in the Standard Model. We find that the simplest scenario that can offer a simultaneous explanation is the two-operator scenario $Q_{4s,d}-Q_{6s,d}$. We briefly discuss how future experimental measurements may alter this picture and try to motivate such measurements for specific modes from our analysis.
DOI: https://doi.org/10.22323/1.481.0036
How to cite

Metadata are provided both in article format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in proceeding format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.