Rare $B_s$ decays to $η$ and $η^\prime$ final states

Details Rare $B_s$ decays to $η$ and $η^\prime$ final states Rare $B_s$ decays to $η$ and $η^\prime$ final states

2009-07-13

arxiv.org/abs/0907.2160v1

Phys.Rev.D80:055023,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTeX, 10 pages, 4 figures

Scientific paper

10.1103/PhysRevD.80.055023

We study exclusive $B_s$ decays to final states with $\eta$ and $\eta^\prime$, induced by the rare $b \to s \ell^+ \ell^-$ and $b \to s \nu \bar \nu$ transitions. Differential decay rates and total branching fractions are predicted in the Standard Model, adopting the flavour scheme for the description of the $\eta$-$\eta^\prime$ mixing. We discuss the theoretical uncertainty related to the hadronic matrix elements. We also consider these decay modes in a new Physics scenario with a single universal extra dimension, studying the dependence of branching ratios and decay distributions on the compactification scale $R^{-1}$ of the extra dimension.

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