Search for charged Higgs bosons in e+e- collisions at centre-of-mass energies from 130 to 172 GeV

R. Barate, D. Buskulic, D. Decamp, P. Ghez, C. Goy, J. P. Lees, A. Lucotte, M. N. Minard, J. Y. Nief, B. Pietrzyk, M. P. Casado, M. Chmeissani, P. Comas, J. M. Crespo, M. Delfino, E. Fernandez, M. Fernandez-Bosman, Ll Garrido, A. Juste, M. MartinezG. Merino, R. Miquel, Ll M. Mir, C. Padilla, I. C. Park, A. Pascual, J. A. Perlas, I. Riu, F. Sanchez, A. Colaleo, D. Creanza, M. De Palma, G. Gelao, G. Iaselli, G. Maggi, M. Maggi, N. Marinelli, 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, R. Alemany, A. O. Bazarko, U. Becker, P. Bright-Thomas, M. Cattaneo, F. Cerutti, G. Dissertori, H. Drevermann, R. W. Forty, M. Frank, F. Gianotti, R. Hagelberg, J. B. Hansen, J. Harvey, P. Janot, B. Jost, E. Kneringer, I. Lehraus, P. Mato, A. Minten, L. Moneta, A. Pacheco, L. F. Pusztaszeri, F. Ranjard, G. Rizzo, L. Rolandi, D. Rousseau, D. Schlatter, M. Schmitt, O. Schneider, W. Tejessy, F. Teubert, I. R. Tomalin, H. Wachsmuth, A. Wagner, Z. Ajaltouni, A. Barrés, C. Boyer, A. Falvard, C. Ferdi, P. Gay, C. Guicheney

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13 Citations (Scopus)

Abstract

The data collected at centre-of-mass energies ranging from 130 to 172 GeV by ALEPH at LEP, corresponding to an integrated luminosity of 27.5 pb-1, are analysed in a search for pair-produced charged Higgs bosons H±. Three analyses are employed to select the τ+νττ-ν̄ τ, cs̄τ-ν̄τ and cs̄sc̄ final states. No evidence for a signal is found. Mass limits are set as a function of the branching fraction ℬ(τν) for H± → τν. Charged Higgs bosons with masses below 52 GeV/c2 are excluded at 95% C.L. independently of ℬ(τν), thus significantly improving on existing limits. © 1998 Published by Elsevier Science B.V.
Original languageEnglish
Pages (from-to)419-429
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume418
DOIs
Publication statusPublished - 5 Feb 1998

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