Search for doubly charged Higgs bosons with lepton-flavor-violating decays involving tau leptons

Phys Rev Lett. 2008 Sep 19;101(12):121801. doi: 10.1103/PhysRevLett.101.121801. Epub 2008 Sep 16.

Abstract

We search for pair production of doubly charged Higgs particles (H+/- +/-) followed by decays into electron-tau (etau) and muon-tau (mutau) pairs using data (350 pb(-1) collected from [over]pp collisions at sqrt[s]=1.96 TeV by the CDF II experiment. We search separately for cases where three or four final-state leptons are detected, and combine results for exclusive decays to left-handed etau (mutau) pairs. We set an H+/- +/- lower mass limit of 114(112) GeV/c(2) at the 95% confidence level.