Search for the single production of doubly-charged Higgs bosons and constraints on their couplings from Bhabha scattering

Abstract: A search for the single production of doubly-charged Higgs bosons is performed using e+e− collision data collected by the OPAL experiment at centre-of-mass energies between 189 GeV and 209 GeV. No evidence for the existence of H±± is observed. Upper limits are derived on hee, the Yukawa coupling of the H±± to like-signed electron pairs. A 95% confidence level upper limit of hee< 0.071 is inferred for M(H±±)<160 GeV assuming that the sum of the branching fractions of the H±± to all lepton flavour combinations is 100%. Additionally, indirect constraints on hee from Bhabha scattering at centre-of-mass energies between 183 GeV and 209 GeV, where the H±± would contribute via t-channel exchange, are derived for M(H±±)<2 TeV. These are the first results both from a single production search and on constraints from Bhabha scattering reported from LEP

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch
Notes
Physics letters / B. - 577, 3-4 (2003) , 93-108, ISSN: 1873-2445

Event
Veröffentlichung
(where)
Freiburg
(who)
Universität
(when)
2022

DOI
10.1016/j.physletb.2003.10.034
URN
urn:nbn:de:bsz:25-freidok-2248214
Rights
Kein Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
25.03.2025, 1:50 PM CET

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Time of origin

  • 2022

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