Updated constraints from radiative Υ decays on a light CP - odd
نویسندگان
چکیده
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 Υ decays through such a pseudoscalar state and possible mixings with the η b 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(Υ → γ ττ), that is on the pseudoscalar mass-range ∼ 8− 10 GeV.
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تاریخ انتشار 2010