PoS - Proceedings of Science
Volume 326 - The International Conference on B-Physics at Frontier Machines (BEAUTY2018) - Session: Posters
Utilising $B \to \pi K$ Decays at the High-Precision Frontier
R. Jaarsma
Full text: pdf
Pre-published on: July 31, 2018
Published on: October 30, 2018
Abstract
$B \to \pi K$ decays have received a lot of attention over the last two decades, with puzzling patterns in the previous data. They form a particularly interesting set of decays as they are dominated by QCD penguin topologies. Electroweak penguin amplitudes also play a significant role, giving a contribution at the level of the tree topologies. We find a discrepancy in the correlation between the CP asymmetries of $B^0_d \to \pi^0 K_{\rm S}$. A modified electroweak penguin sector offers an attractive avenue for new particles to enter. We provide a new method to determine the electroweak penguin parameters, and apply it to current data for charged $B \to \pi K$ decays. It uses an isospin relation and requires only $SU(3)$ input to fix a normalization. A central role is played by the mixing-induced CP asymmetry of $B^0_d\to\pi^0K_{\rm S}$. The implementation of our strategy in the high-precision era of $B$-physics has the exciting potential to establish New Physics in the electroweak penguin sector.
DOI: https://doi.org/10.22323/1.326.0066
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.