Probe of new light Higgs bosons from bottomonium chi_{b0} decay

Abstract

We calculate the branching ratios of chi_{b0} --> tau+ tau- via an s-channel Higgs boson and estimate the sensitivity to this process from Upsilon --> gamma chi_{b0} --> gamma tau+ tau-. We show that future running at the Upsilon(3S) at a very high luminosity super B factory can put significant constraints on the Type-II two-Higgs-doublet model when the discovered 125 GeV Higgs boson is the heavier of the two CP-even scalars.

7 pages, 2 figures. v2: minor improvements to text. v3: several refs added, discussion expanded, competing processes considered, conclusions unchanged