Cooper, B; Lancaster, M; McGivern, D; Waters, D; Wyatt, AC; (2004) Search for Doubly-Charged Higgs Bosons Decaying to Dileptons in proton anti-proton Collisions at s**(1/2) = 1.96 TeV. Physical Review Letters , 93 (22) , Article 221802. 10.1103/PhysRevLett.93.221802.

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Abstract

We present the results of a search for doubly charged Higgs bosons (H±±) decaying to dileptons (ll′) using ≈240  pb-1 of pp̅ 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 σ(pp̅ →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 HL±± 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 HR±± in the μμ channel, all at the 95% confidence level.

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