Prospects of probing new physics in bottomonium decays and spectroscopy

Abstract

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 $M_{{\rm Y}(nS)}-M_{{\eta }_b(nS)}$ 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.

LaTeX, 10 pages, 1 EPS figure

References in corpus (1)

• NMSSM Higgs Detection: LHC, LC, $\gam C$ Collider Complementarity and Higgs-to-Higgs Decays