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Mass Limits of Invisibly Decaying Higgs Particles from the LEP Data

Biswajoy Brahmachari·Anjan S. Joshipura·Saurabh D. Rindani·D. P. Roy·Sridhar K
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Abstract

In the Majoron models the $SU(2)$ doublet Higgs can decay invisibly into a Majoron pair via its mixing with a singlet. An analysis of the LEP data shows the invisible decay mode to be more visible than the SM decay. For these models, the dominantly doublet Higgs $H$ is shown to have a mass limit within $\pm 6$ GeV of the SM limit irrespective of the model parameters. But the dominantly singlet one $S$ can be arbitrarily light for sufficiently small mixing angle.

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Biswajoy Brahmachari, Anjan S. Joshipura, Saurabh D. Rindani, D. P. Roy, Sridhar K. 1993-06-02. Mass Limits of Invisibly Decaying Higgs Particles from the LEP Data. https://doi.org/10.1103/physrevd.48.4224

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