Rare B decays at the Tevatron

TL;DR

This paper reports on recent measurements of rare B meson decays at the Tevatron collider, providing key insights into flavor-changing neutral currents and constraints on physics beyond the standard model.

Contribution

It presents the first observation of the decay B_s^0 → φ μ^+ μ^-, world-leading limits on B^0_{(s)} → μ^+ μ^-, and competitive measurements of asymmetries in B decays, advancing the understanding of rare B processes.

Findings

First observation of B_s^0 → φ μ^+ μ^- decay.

World-leading limits on B^0_{(s)} → μ^+ μ^- branching fractions.

Competitive measurements of forward-backward asymmetries.

Abstract

Studying flavor changing neutral current transitions provides important information that helps searches for physics beyond the standard model. In this paper we report on recent measurements of these transitions using data collected by the CDF and D0 experiments at the Tevatron $p\bar{p}$ collider, including world-leading limits on the branching fraction of the decay $B^0_{(s)} \to \mu^+ \mu^-$, a forward-backward asymmetry measurement in $B^0 \to K^{*0} \mu^+ \mu^-$ and $B^+ \to K^+ \mu^+ \mu^-$ decays which is consistent and competitive with best $B$-factories results, and the first observation of the decay $B^0_s \to \phi \mu^+ \mu^-$.