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

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

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 +ν ττ − ν ̄ τ , c s ̄ τ − ν ̄ τ and c s...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physics letters. B 1998, Vol.418 (3), p.419-429
Hauptverfasser: Barate, R, Goy, C, Nief, J.-Y, Miquel, R, Park, I.C, Riu, I, Creanza, D, Maggi, G, Maggi, M, Ranieri, A, Raso, G, Selvaggi, G, Zito, G, Xu, R, Zhang, J, Abbaneo, D, Forty, R.W, Frank, M, Gianotti, F, Lehraus, I, Minten, A, Pacheco, A, Rizzo, G, Schneider, O, Teubert, F, Barrès, A, Falvard, A, Monteil, S, Markou, C, Blondel, A, Valassi, A, Corden, M, Jaffe, D.E, Bencivenni, G, Capon, G, Laurelli, P, Passalacqua, L, Raine, C, Dhamotharan, S, Graefe, G, Cameron, W, Girone, M, Morawitz, P, Ghete, V.M, Girtler, P, Kuhn, D, Betteridge, A.P, Buck, P.G, Hoffmann, C, Quast, G, Aubert, J.J, Ealet, A, Fouchez, D, Konstantinidis, N, Sadouki, A, Thulasidas, M, Kroha, H, Lütjens, G, Seywerd, H, Wiedenmann, W, Chen, S, Heusse, Ph, Marumi, M, Schune, M.-H, Serin, L, Zerwas, D, Azzurri, P, Bettarini, S, Giassi, A, Sguazzoni, G, Tenchini, R, Venturi, A, Chambers, J.T, von Wimmersperg-Toeller, J.H, Botterill, D.R, Clifft, R.W, Edgecock, T.R, Haywood, S, Bloch-Devaux, B, Fabbro, B, Lançon, E, Lemaire, M.C, Perez, P, McNeil, M.A, Taylor, G, Cartwright, S, Kelly, M.S, Reeve, J, Foss, J, Giannini, G, Gobbo, B, Rothberg, J, Williams, R.W, Charles, E, Hayes, O.J, Nielsen, J, Orejudos, W, Saadi, Y, Wu, Sau Lan, Zobernig, G
Format: Artikel
Sprache:eng
Schlagworte:
High Energy Physics - Experiment
Physics
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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 +ν ττ − ν ̄ τ , c s ̄ τ − ν ̄ τ and c s ̄ s c ̄ 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/ c 2 are excluded at 95% C.L. independently of B(τν) , thus significantly improving on existing limits.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(97)01490-1