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%.

D., D., B., D., C., G., J. P., L., M. N., M., J. M., C., et al. (1990). A Search For Pair-produced Charged Higgs Bosons In Z0 Decays. PHYSICS LETTERS. SECTION B, 241(4), 623-634 [10.1016/0370-2693(90)91882-C].

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

CIOCCI, MARIA AGNESE;BOTTIGLI, UBALDO;MARROCCHESI, PIER SIMONE;
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., D., B., D., C., G., J. P., L., M. N., M., J. M., C., et al. (1990). A Search For Pair-produced Charged Higgs Bosons In Z0 Decays. PHYSICS LETTERS. SECTION B, 241(4), 623-634 [10.1016/0370-2693(90)91882-C].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/38354
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