2003
DOI: 10.1016/j.physletb.2003.09.082
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Search for doubly-charged Higgs bosons at LEP

Abstract: Doubly-charged Higgs bosons are searched for in e + e − collision data collected with the L3 detector at LEP at centre-of-mass energies up to 209 GeV. Final states with four leptons are analysed to tag the pair-production of doubly-charged Higgs bosons. No significant excess is found and lower limits at 95% confidence level on the doubly charged Higgs boson mass are derived. They vary from 95.5 GeV to 100.2 GeV, depending on the decay mode. Doubly-charged Higgs bosons which couple to electrons would modify the… Show more

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Cited by 67 publications
(40 citation statements)
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“…For all reasons above, models with Higgs triplet is very important for nowadays state of art in the searching for a more complete universal particle model. Important searches have been proposed, as for instance, in hadron colliders [12], in LEP at CERN, as OPAL detector, including Bhabha scattering [13] or in L3 and Delphi groups [14]. In HERA at DESY, through ep collision [15] and several others collision experiments as γγ collision [16], eγ collision [17] as in SLAC, or even via Z → H ++ H −− [18] or even through W fusion [19].…”
Section: Introductionmentioning
confidence: 99%
“…For all reasons above, models with Higgs triplet is very important for nowadays state of art in the searching for a more complete universal particle model. Important searches have been proposed, as for instance, in hadron colliders [12], in LEP at CERN, as OPAL detector, including Bhabha scattering [13] or in L3 and Delphi groups [14]. In HERA at DESY, through ep collision [15] and several others collision experiments as γγ collision [16], eγ collision [17] as in SLAC, or even via Z → H ++ H −− [18] or even through W fusion [19].…”
Section: Introductionmentioning
confidence: 99%
“…Therefore, the contributions of heavy gauge bosons to relic density and muon (g − 2) will be small in comparison to charged scalars. By choosing the coupling of ∆ ++ to e − e − to be much smaller than the coupling with µ − µ − , we can evade the precession constraints from LEP [69]. We have assumed no flavor mixing through ∆ R , otherwise it will give rise to large contribution to µ → eγ and µ → eee process, which is not observed [60].…”
Section: Discussionmentioning
confidence: 99%
“…A search for doubly-charged Higgs bosons has been done at LEP [71], Tevatron [72] and LHC [73]. All these searches have been done under the assumption where doubly-charged Higgs bosons decay into the same sign dilepton.…”
Section: B Signature Of ∆ ±± At Lhcmentioning
confidence: 99%