Search for Very Light $C P$ -Odd Higgs Boson in Radiative Decays of $Υ (1 S)$

10 October 2008

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 101 (15) , 151802
https://doi.org/10.1103/physrevlett.101.151802

Abstract

We search for a non-SM-like

C P

-odd Higgs boson (

a_{1}^{0}

) decaying to

τ^{+} τ^{-}

μ^{+} μ^{-}

in radiative decays of the

Υ (1 S)

. No significant signal is found, and upper limits on the product branching ratios are set. Our

τ^{+} τ^{-}

results are almost 2 orders of magnitude more stringent than previous upper limits. Our data provide no evidence for a Higgs state with a mass of 214 MeV decaying to

μ^{+} μ^{-}

, previously proposed as an explanation for 3

Σ^{+} \to p μ^{+} μ^{-}

events observed by the HyperCP experiment. Our results constrain NMSSM models.

Keywords

HIGGS BOSON

All Related Versions

Version 1, 2008-07-09, ArXiv

This publication has 11 references indexed in Scilit:

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Search for Very LightCP-Odd Higgs Boson in Radiative Decays ofΥ(1S)

Abstract

Keywords

All Related Versions

Search for Very Light $C P$ -Odd Higgs Boson in Radiative Decays of $Υ (1 S)$