Discovery potential of charged Higgs at LHC in H+- ->tau nu decays

Details Discovery potential of charged Higgs at LHC in H+- ->tau nu decays Discovery potential of charged Higgs at LHC in H+- ->tau nu decays

2001-05-19

arxiv.org/abs/hep-ph/0105199v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given to the XXXVI Rencontres de Moriond, QCD and High Energy Hadronic Interactions, 17-24 March 2001, Les Arcs, Savoie,

Scientific paper

The discovery potential of charged Higgs from pp->tH+- in the H+- -> tau nu decay channel is investigated in CMS and ATLAS. For m_H>m_t, the most relevant channels are H+- -> tb and H+- -> tau nu. Whereas the former has the largest branching ratio it suffers of large irreducible backgrounds, while the latter offers a very clean enviroment when appropriate cuts are used. Making use of the tau polarization effects, in the purely hadronic final states an almost background-free signal is selected. The expected discovery range is evaluated for CMS and ATLAS with 30 fb^-1 each in the low luminosity running conditions and the combined results are presented.

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