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arXiv · hep-ph/0407320

Hints of new physics in bottomonium decays and spectroscopy

Miguel A. Sanchis-Lozano
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Abstract

A non-standard light CP-odd Higgs boson could induce a slight (but observable) lepton universality breakdown in Upsilon leptonic decays. Moreover, the mixing between such a pseudoscalar Higgs and $η_b$ states might shift the mass levels of the latter, thereby changing the values of the $m_{Υ(nS)}-m_{η_b(nS)}$ splittings predicted in the standard model. Besides, also the $η_b$ width could be broader than expected, with potentially negative consequences for its discovery in both $e^+e^-$ and hadron colliders.

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Miguel A. Sanchis-Lozano. 2004-11-09. Hints of new physics in bottomonium decays and spectroscopy. https://doi.org/10.1016/j.nuclphysbps.2005.01.034

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