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arXiv · 1712.02323

Towards New Frontiers with $B\toπK$ Decays

Robert Fleischer·Ruben Jaarsma·K. Keri Vos
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Abstract

Exploring correlations between the CP asymmetries of $B^0_d\toπ^0K_{\rm S}$ following from an isospin relation, we uncover new tensions with the Standard Model in data for neutral $B\toπK$ decays. Should this intriguing picture originate from New Physics, a modified electroweak penguin sector provides a key scenario. It includes models with extra $Z'$ bosons, which offer attractive ways to resolve anomalies in $B\to K^{(*)}\ell^+\ell^-$ measurements. We present a new strategy to reveal the underlying physics, apply it to current $B\toπK$ data, and discuss the excellent prospects for Belle II.

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Robert Fleischer, Ruben Jaarsma, K. Keri Vos. 2017-12-06. Towards New Frontiers with $B\toπK$ Decays. https://doi.org/10.1016/j.physletb.2018.09.015

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