Mass Limits of Invisibly Decaying Higgs Particles from the LEP Data

Details Mass Limits of Invisibly Decaying Higgs Particles from the LEP Data Mass Limits of Invisibly Decaying Higgs Particles from the LEP Data

1993-06-02

arxiv.org/abs/hep-ph/9306209v1

Phys.Rev. D48 (1993) 4224-4229

Physics

High Energy Physics

High Energy Physics - Phenomenology

(LATEX, 12 pages, 3 figures available on request), TIFR/TH/93-26

Scientific paper

10.1103/PhysRevD.48.4224

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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