Search for Doubly Charged Higgs Bosons Decaying to Dileptons in pp̅ Collisions at √s =1:96 TeV

Authors

Darin Acosta, University of FloridaFollow
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Collider Detector at Fermilab Collaboration

Date of this Version

11-26-2004

Comments

Published by American Physical Society. Phys. Rev. Lett. 93, 221802 (2004). http://prl.aps.org. Copyright © 2004 American Physical Society. Permission to use.

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 m_ll′ >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 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/c^-1 on H_R^±± in the µµ channel, all at the 95% confidence level.