ATLAS discovery potential for a heavy charged Higgs boson

Details ATLAS discovery potential for a heavy charged Higgs boson ATLAS discovery potential for a heavy charged Higgs boson

2002-03-13

arxiv.org/abs/hep-ph/0203121v2

Eur.Phys.J.directC4:9,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages

Scientific paper

The sensitivity of the ATLAS detector to the discovery of a heavy charged Higgs boson is presented. Assuming a heavy SUSY spectrum, the most promising channels above the top quark mass are $H^\pm\to tb$ and $H^\pm\to\tau^\pm\nu_\tau$ which provide coverage in the low and high $\tan\beta$ regions up to $\sim 600$ GeV. The achievable precisions on the charged Higgs mass and $\tan\beta$ determination are also discussed. The $H^\pm\to W^\pm h^0$ channel, though restricted to a small MSSM parameter space, shows a viable signal in NMSSM where the parameter space is less constrained. The observation of the channel $H^-\to\tau^-_L\nu_\tau + c.c.$ may constitute a distinctive evidence for models with singlet neutrinos in large extra dimensions.

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