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arXiv · hep-ph/9708444

Next to Minimal Higgs : Mass Bounds and Search Prospects

Anindya Datta·Amitava Raychaudhuri
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Abstract

The Standard Model of electroweak interactions has one scalar doublet. The minimal extension of this sector is effected by adding a neutral, singlet scalar field. Depending on whether the singlet field has a non-zero vacuum expectation value, x, or not, the scenario has quite distinctive predictions. In particular, x unequal to 0 produces a mixing between the usual SU(2) doublet and the singlet, giving rise to two physical states and a goldstone boson with non-vanishing coupling to these. Presence of this coupling modifies the 2 jets + missing energy signal of the Bjorken process at LEP. We update the bounds on the Higgs mass using the LEP-1 data. We then explore, using parton-level Monte Carlo event generators, the production of these scalars at the LHC via gluon-gluon fusion and subsequent detection. We compare the signals with the expected backgrounds.

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Anindya Datta, Amitava Raychaudhuri. 1997-08-24. Next to Minimal Higgs : Mass Bounds and Search Prospects. https://doi.org/10.1103/physrevd.57.2940

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