Updated constraints from radiative $Υ$ decays on a light CP-odd Higgs

Details Updated constraints from radiative $Υ$ decays on a light CP-odd Higgs Updated constraints from radiative $Υ$ decays on a light CP-odd Higgs

2010-10-22

arxiv.org/abs/1010.4701v1

JHEP 1104:016,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 8 figures

Scientific paper

10.1007/JHEP04(2011)016

The possible existence of a light CP-odd Higgs state in many new-physics models could lead to observable effects in the bottomonium sector. Experimental bounds on radiative $\Upsilon$ decays through such a pseudoscalar state and possible mixings with the $\eta_b^0$ states are reviewed. Combining these two effects, we set constraints on the properties of the CP-odd Higgs in the limit of small photon energy of $BR(\Upsilon\to\gamma\,\tau^+\tau^-)$, that is on the pseudoscalar mass-range $\sim8-10$GeV.

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