20-27 July 2011
Alpes Congrès - Alpexpo
Europe/Paris timezone

Search for a CP-odd light Higgs in $\Upsilon(1S)$ radiative decays at Belle

22 Jul 2011, 17:00
Dauphine (Alpes Congrès - Alpexpo)


Alpes Congrès - Alpexpo

Parallel session talk Higgs and New Physics


Jamal Rorie


We search for a CP-odd light Higgs among 102 M $\Upsilon(1S)$ events recorded with the Belle detector at KEKB. Our signal mode is $\Upsilon(1S)\to\gamma A_0;A_0\to \tau^+\tau^-$, where the $\tau$ is detected via its leptonic decay modes. We determine the upper limits on the production rates for a CP-odd light Higgs with a mass between the $\tau^+\tau^-$ threshold and 9.4 GeV/$c^2$. This result puts stringent constraints on theoretical models of low mass NMSSM Higgs bosons.

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