Hints of new physics in bottomonium decays and spectroscopy

Details Hints of new physics in bottomonium decays and spectroscopy Hints of new physics in bottomonium decays and spectroscopy

2004-07-28

arxiv.org/abs/hep-ph/0407320v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 EPS figures, Talk given at BEACH 2004, 27/6/04 - 3/7/04 IIT Chicago

Scientific paper

10.1016/j.nuclphysbps.2005.01.03

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 $\eta_b$ states might shift the mass levels of the latter, thereby changing the values of the $m_{\Upsilon(nS)}-m_{\eta_b(nS)}$ splittings predicted in the standard model. Besides, also the $\eta_b$ width could be broader than expected, with potentially negative consequences for its discovery in both $e^+e^-$ and hadron colliders.

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