Search for Doubly Charged Higgs Bosons Decaying to Dileptons in pp-bar Collisions at sqrt[s]=1.96 TeV

We present the results of a search for doubly charged Higgs bosons (H±±) decaying to dileptons (ll') using ~ 240 pb-1 of pp-bar collision data collected by the CDF II experiment at the Fermilab Tevatron. In our search region, given by same-sign ll' mass mll'>80 GeV/c2 (100 GeV/c2 for ee channel), we observe no evidence for H±± production. We set limits on sigma (pp-bar-->H++H---- >l+l'+l-l'-) as a function of the mass of the H±± and the chirality of its couplings. Assuming exclusive same-sign dilepton decays, we derive lower mass limits on H±±L of 133, 136, and 115 GeV/c2 in the ee, µµ, and eµ channels, respectively, and a lower mass limit of 113 GeV/c2 on H±±R in the µµ channel, all at the 95% confidence level.

Duke Scholars

Author Alfred T. Goshaw Physics

Author Seog Oh Physics

Author Ashutosh V. Kotwal Physics