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# Recent Results in Bottomonium

(28 Dec 2012)  Key: citeulike:11861872

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### Abstract

Great strides have been made in the understanding of bound states of a bottom quark $b$ and its antiquark $\bar b$ since the discovery of the first $Υ$ resonances in 1977. These bottomonium bound states have a rich spectrum whose masses and transition amplitudes shed valuable light on the strong interactions. The present article reviews some recent developments in bottomonium physics. These include the discovery of the spin-singlet states $η_b$ and $h_b$, the first D-wave states, one or more candidates for spin-triplet $χ_b(3P)$ excitations, and above-threshold states with strong transitions to states below threshold. Information on transitions, production, and signatures of new physics is also presented.

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