A search for pair-produced charged Higgs bosons in decays of the Z0 has been performed using the ALEPH detector at LEP for the decay channels H+ H- -> nu tau+ antinu tau-, H+ H--> c sbar cbar s. Searches for two additional decay channels in which cs is replaced by cb were also performed. With 1.17 pb−1 of integrated luminosity, corresponding to about 25000 hadronic decays of the Z0, the charged Higgs has been excluded at 95% CL in the mass range 7.6 to 43.0 GeV for BR(H+/- -> nu_tau tau)=100%, 8.3 to 40.6 GeV for BR(H+/- -> nu_tau tau)=BR(H+/- -> c s)=50%, and 14.4 to 35.4 GeV for BR(H+/- -> c s)=100% . With cs replaced by cb, the charged Higgs has been excluded at 95% CL in the mass range 12.0 to 40.7 GeV for BR(H+/- -> nu_tau tau)=BR(H+/- -> c b)=50%, and 16.2 to 35.7 GeV for BR(H+/- -> c b)=100%.

A Search For Pair-produced Charged Higgs Bosons In Z0 Decays

CIOCCI, MARIA AGNESE;BATIGNANI, GIOVANNI;FERRANTE, ISIDORO;FIDECARO, FRANCESCO;FORTI, FRANCESCO;GIORGI, MARCELLO;MESSINEO, ALBERTO MARIA;TONELLI, GUIDO EMILIO;TRIGGIANI, GIUSEPPE;
1990-01-01

Abstract

A search for pair-produced charged Higgs bosons in decays of the Z0 has been performed using the ALEPH detector at LEP for the decay channels H+ H- -> nu tau+ antinu tau-, H+ H--> c sbar cbar s. Searches for two additional decay channels in which cs is replaced by cb were also performed. With 1.17 pb−1 of integrated luminosity, corresponding to about 25000 hadronic decays of the Z0, the charged Higgs has been excluded at 95% CL in the mass range 7.6 to 43.0 GeV for BR(H+/- -> nu_tau tau)=100%, 8.3 to 40.6 GeV for BR(H+/- -> nu_tau tau)=BR(H+/- -> c s)=50%, and 14.4 to 35.4 GeV for BR(H+/- -> c s)=100% . With cs replaced by cb, the charged Higgs has been excluded at 95% CL in the mass range 12.0 to 40.7 GeV for BR(H+/- -> nu_tau tau)=BR(H+/- -> c b)=50%, and 16.2 to 35.7 GeV for BR(H+/- -> c b)=100%.
1990
D., Decamp; B., Deschizeaux; C., Goy; J. P., Lees; M. N., Minard; J. M., Crespo; M., Delfino; E., Fernandez; M., Martinez; R., Miquel; L. M., Mir; S.,...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/829056
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