Hunting a light CP-odd non-standard Higgs boson through its tauonic decay at a (Super) B factory

Abstract

Several scenarios beyond the minimal extension of the Standard Model still allow light non-standard Higgs bosons evading LEP bounds. We examine the mixing between a light CP-odd Higgs boson and ${\eta }_b$ states and its implications on a slight (but observable) lepton universality breaking in Upsilon decays which could be measured at the percent level at a (Super) B factory.

Comments: 9 pages, 7 figures