TY - JOUR
T1 - Search for the single production of doubly-charged Higgs bosons and constraints on their couplings from Bhabha scattering
AU - Abbiendi, G
AU - Anagnostou, Georgios
AU - Bell, Paul
AU - Charlton, David
AU - Hawkes, Christopher
AU - Jovanovic, Predrag
AU - McMahon, Thomas
AU - O'Neale, Stephen
AU - Watson, Miriam
AU - Watkins, Peter
AU - Watson, Alan
AU - Watson, Nigel
AU - Wilson, John
PY - 2003/12/25
Y1 - 2003/12/25
N2 - 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 h(ee), 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 he, 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. (C) 2003 Published by Elsevier B.V.
AB - 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 h(ee), 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 he, 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. (C) 2003 Published by Elsevier B.V.
U2 - 10.1016/j.physletb.2003.10.034
DO - 10.1016/j.physletb.2003.10.034
M3 - Article
VL - 577
SP - 93
EP - 108
JO - Physics Letters B
JF - Physics Letters B
IS - 3-4
ER -