Search for doubly charged Higgs bosons with the OPAL detector at LEP

OPAL Collaboration (2002) Search for doubly charged Higgs bosons with the OPAL detector at LEP. Physics Letters B, 526 (3-4). pp. 221-232. ISSN 0370-2693

Abstract

A search for pair-produced doubly charged Higgs bosons has been performed using data samples corresponding to an integrated luminosity of about 614 pb−1 collected with the OPAL detector at LEP at centre-of-mass energies between 189 GeV and 209 GeV. No evidence for a signal has been observed. A mass limit of 98.5 GeV/c2 at the 95% confidence level has been set for the doubly charged Higgs particle in left–right symmetric models. This is the first search for doubly charged Higgs bosons at centre-of-mass energies larger than 91 GeV.