Prospects of probing new physics in bottomonium decays and spectroscopy

Details Prospects of probing new physics in bottomonium decays and spectroscopy Prospects of probing new physics in bottomonium decays and spectroscopy

2005-03-26

arxiv.org/abs/hep-ph/0503266v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 10 pages, 1 EPS figure

Scientific paper

A non-standard CP-odd Higgs boson could induce a slight (but observable) lepton universality breaking in Upsilon leptonic decays. Moreover, mixing between such a pseudoscalar Higgs boson and $\eta_b$ states might shift their mass levels, thereby modifying the values of the $M_{\Upsilon(nS)}-M_{\eta_b(nS)}$ hyperfine spplitings predicted in the standard model. Besides, $\eta_b$ resonances could be broader than expected with potentially negative consequences for discovery in both $e^+e^-$ and hadron colliders. A scenario with a CP violating Higgs sector is also considered. Finally, further strategies to search for a light Higgs particle in bottomonium decays are outlined.

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