Search for charged Higgs bosons in e+e-collisions at √s = 181-184 GeV

R. Barate, D. Decamp, P. Ghez, C. Goy, S. Jezequel, J. P. Lees, F. Martin, E. Merle, M. N. Minard, J. Y. Nief, B. Pietrzyk, R. Alemany, M. P. Casado, M. Chmeissani, J. M. Crespo, M. Delfino, E. Fernandez, M. Fernandez-Bosman, Ll Garrido, E. GraugèsA. Juste, M. Martinez, G. Merino, R. Miquel, Ll M. Mir, P. Morawitz, A. Pacheco, I. C. Park, A. Pascual, I. Riu, F. Sanchez, A. Colaleo, D. Creanza, M. De Palma, G. Gelao, G. Iaselli, G. Maggi, M. Maggi, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, A. Tricomi, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, D. Abbaneo, U. Becker, G. Boix, M. Cattaneo, V. Ciulli, G. Dissertori, H. Drevermann, R. W. Forty, M. Frank, F. Gianotti, A. W. Halley, J. B. Hansen, J. Harvey, P. Janot, B. Jost, I. Lehraus, O. Leroy, C. Loomis, P. Maley, P. Mato, A. Minten, A. Moutoussi, F. Ranjard, L. Rolandi, D. Rousseau, D. Schlatter, M. Schmitt, O. Schneider, W. Tejessy, F. Teubert, I. R. Tomalin, E. Tournefier, M. Vreeswijk, A. E. Wright, Z. Ajaltouni, F. Badaud, G. Chazelle, O. Deschamps, S. Dessagne, A. Falvard, C. Ferdi, P. Gay, C. Guicheney

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6 Citations (Scopus)

Abstract

Data collected at centre-of-mass energies of 181-184 GeV by ALEPH at LEP, corresponding to an integrated luminosity of 56.9 pb-1, are analysed in a search for pair-produced charged Higgs bosons H±. Three analyses are employed to select the τ+ντ-ν̄τ, cs̄τ-ν̄τ/c̄sτ+ντand cs̄sc̄ final states. No evidence for a signal is found. Mass limits are set as a function of the branching fraction B(H+→ τ+ντ). Under the assumption that the decay modes considered cover the totality of the possible final states, charged Higgs bosons with masses below 59 GeV/c2are excluded at 95% C.L. independently of B(H+→ τ+ντ). © 1999 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)467-478
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume450
Issue number4
DOIs
Publication statusPublished - 1 Jan 1999

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