Results in $B_s$ physics and bottomonium spectroscopy using the Belle ${\rm Y}(5S)$ data

Abstract

The Belle experiment at KEK accumulated a $121.4{\mathrm{fb}}^{-1}$ sample of $e^{+}{e}^{-}$ collisions at the ${\rm Y}(5S)$ resonance. This sample provides ample opportunity for improving the understanding of both the properties of $B_s$ mesons and the spectroscopy of bottomonium states. In this article we describe the recent results obtained from the Belle ${\rm Y}(5S)$ data.

Invited brief review for MPLA, 22 pages, 7 Figures

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• Nonrelativistic model of tetraquarks and predictions for their masses from fits to charmed and bottom meson data
• Semi-inclusive studies of semileptonic $B_s$ decays at Belle
• SU(3) analysis of fully-light tetraquarks in heavy meson weak decays
• Predictions for $h_c$ and $h_b$ production at the LHC
• Study of B^{0}_{s} \rightarrow \ TT(a_{2}(1320),K^{*}_{2}(1430),f_{2}(1270),f^{'}_{2}(1525)) in the perturbative QCD approach