Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-05-10
Nucl.Phys.B787:198-210,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, 3 figures; reference added to Section 6, numerical values of statistical data added to Section 5, typos corrected
Scientific paper
10.1016/j.nuclphysb.2007.07.014
We have investigated the possibility of direct tests of little Higgs models incorporating triplet Higgs neutrino mass mechanism at LHC experiments. We have performed Monte Carlo studies of Drell-Yan pair production of doubly charged Higgs boson \Phi^{++} followed by its leptonic decays which branching ratios are fixed from the neutrino oscillation data. We propose appropriate selection rules for the four-lepton signal, including reconstructed taus, which are optimized for the discovery of \Phi^{++} with the lowest LHC luminosity. As the Standard Model background can be effectively eliminated, an important aspect of our study is the correct statistical treatment of the LHC discovery potential. Adding detection efficiencies and measurement errors to the Monte Carlo analyses, \Phi^{++} can be discovered up to the mass 250 GeV in the first year of LHC, and 700 GeV mass is reachable for the integrated luminosity L=30 fb^{-1}.
Hektor Andi
Kadastik Mario
Muntel M.
Raidal Martti
Rebane L.
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