A search for pair-produced charged Higgs bosons in Z0 decays

D. Decamp, B. Deschizeaux, C. Goy, J. P. Lees, M. N. Minard, J. M. Crespo, M. Delfino, E. Fernandez, M. Martinez, R. Miquel, Ll M. Mir, S. Orteu, A. Pacheco, J. A. Perlas, E. Tubau, M. G. Catanesi, M. De Palma, A. Farilla, G. Iaselli, G. MaggiS. Natali, S. Nuzzo, A. Ranieri, G. Raso, F. Romano, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito, Y. Gao, H. Hu, D. Huang, S. Jin, J. Lin, T. Ruan, T. Wang, W. Wu, Y. Xie, D. Xu, R. Xu, J. Zhang, Z. Zhang, W. Zhao, H. Albrecht, W. B. Atwood, F. Bird, E. Blucher, T. H. Burnett, T. Charity, H. Drevermann, Ll Garrido, C. Grab, R. Hagelberg, S. Haywood, B. Jost, M. Kasemann, G. Kellner, J. Knobloch, A. Lacourt, I. Lehraus, T. Lohse, D. Lüke, A. Marchioro, P. Mato, J. May, A. Minten, A. Miotto, P. Palazzi, M. Pepe-Altarelli, F. Ranjard, A. Roth, J. Rothberg, H. Rotscheidt, W. Von Rüden, R. St. Denis, D. Schlatter, M. Takashima, M. Talby, H. Taureg, W. Tejessy, H. Wachsmuth, S. Wheeler, W. Wiedenmann, W. Witzeling, J. Wotschack, Z. Ajaltouni, M. Bardadin-Otwinowska, A. Falvard, P. Gay, P. Henrard, J. Jousset, B. Michel, J. C. Montret, D. Pallin, P. Perret, J. Proriol, F. Prulhière, J. D. Hansen, J. R. Hansen

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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- → ντντ, H+H- → ντ cs and H+H- → cs cs. 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 25 000 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± → ντ] = 100%, 8.3 to 40.6 GeV for BR[H±→ντ] = BR[H±→cs] = 50%, and 14.4 to 35.4 GeV for BR[H±→cs] = 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±→ντ] = BR[H±→cb] = 50%, and 16.2 to 35.7 GeV for BR[H±→cb] = 100%. © 1990.
Original languageEnglish
Pages (from-to)623-634
JournalPhysics Letters B
Volume241
Issue number4
DOIs
Publication statusPublished - 24 May 1990

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    Decamp, D., Deschizeaux, B., Goy, C., Lees, J. P., Minard, M. N., Crespo, J. M., Delfino, M., Fernandez, E., Martinez, M., Miquel, R., Mir, L. M., Orteu, S., Pacheco, A., Perlas, J. A., Tubau, E., Catanesi, M. G., De Palma, M., Farilla, A., Iaselli, G., ... Hansen, J. R. (1990). A search for pair-produced charged Higgs bosons in Z0 decays. Physics Letters B, 241(4), 623-634. https://doi.org/10.1016/0370-2693(90)91882-C