Prospects for rare B decays at Belle II

Abstract

Rare and flavour-changing neutral current decays of the B meson are an important probe in the search for physics beyond the Standard Model. There have recently been several anomalies in rare B decays, and lepton-universality measurements, specifically involving the $b\to s{\ell }^{+}{\ell }^{-}$ quark transition. These results tend towards a non-Standard-Model interpretation. The Belle II experiment is a next-generation b physics experiment located at SuperKEKB, an upgraded B factory $e^{+}{e}^{-}$ collider, in Tsukuba, Japan. The first collisions are expected in early 2018 with full physics data expected in 2019. This document describes prospects for several rare B decays at Belle II including $b\to s{\ell }^{+}{\ell }^{-}$ processes and others, such as $b\to (s,d)\gamma$ and $b\to s\nu \bar{\nu }$. Areas where the Belle II program is complementary to that of the currently running LHCb experiment are highlighted.

arXiv commentProceedings of the APS Division of Particles and Fields Meeting (DPF2017), July 31-August 4, 2017, Fermilab. C170731

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