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Search for neutral Higgs bosons decaying into four taus at LEP2

S. Schael R. Barate 1 R. Brunelière 1 I. de Bonis 1 D. Decamp 1 C. Goy 1 S. Jézéquel 1 J.P. Lees 1 F. Martin 1 E. Merle 1 M.N. Minard 1 B. Pietrzyk 1 B. Trocmé 1 S. Bravo M.P. Casado M. Chmeissani J.M. Crespo E. Fernandez M. Fernandez-Bosman Ll. Garrido M. Martinez A. Pacheco H. Ruiz A. Colaleo D. Creanza N. de Filippis M. de Palma 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 Jiali Lin Q. Ouyang T. Wang Y. Xie R. Xu S. Xue J. Zhang L. Zhang W. Zhao D. Abbaneo T. Barklow O. Buchmüller M. Cattaneo B. Clerbaux H. Drevermann R.W. Forty M. Frank F. Gianotti J.B. Hansen J. Harvey D.E. Hutchcroft P. Janot B. Jost M. Kado P. Mato A. Moutoussi F. Ranjard L. Rolandi D. Schlatter F. Teubert A. Valassi I. Videau F. Badaud 2 S. Dessagne 2 Alain Falvard 2 D. Fayolle 2 Pascal Gay 2 J. Jousset 2 B. Michel 2 S. Monteil 2 D. Pallin 2 J M. Pascolo 2 Pascal Perret 2 J.D. Hansen J.R. Hansen P.H. Hansen A.C. Kraan B.S. Nilsson A. Kyriakis C. Markou E. Simopoulou A. Vayaki K. Zachariadou A. Blondel 3 J.-C. Brient 3 F. Machefert 3 A. Rougé 3 H. Videau 3 V. Ciulli E. Focardi G. Parrini A. Antonelli M. Antonelli G. Bencivenni F. Bossi G. Capon F. Cerutti V. Chiarella P. Laurelli G. Mannocchi G.P. Murtas L. Passalacqua J. Kennedy J.G. Lynch P. Negus V. O'Shea A.S. Thompson S. Wasserbaech R. Cavanaugh S. Dhamotharan C. Geweniger P. Hanke V. Hepp E.E. Kluge A. Putzer H. Stenzel K. Tittel M. Wunsch R. Beuselinck W. Cameron G. Davies P.J. Dornan M. Girone N. Marinelli J. Nowell S.A. Rutherford J.K. Sedgbeer J.C. Thompson R. White V.M. Ghete P. Girtler E. Kneringer D. Kuhn G. Rudolph E. Bouhova-Thacker C.K. Bowdery D.P. Clarke G. Ellis A.J. Finch F. Foster G. Hughes R.W.L. Jones M.R. Pearson N.A. Robertson T. Sloan M. Smizanska O. van der Aa C. Delaere G. Leibenguth V. Lemaitre U. Blumenschein F. Hölldorfer K. Jakobs F. Kayser A.-S. Müller B. Renk H.-G. Sander S. Schmeling H. Wachsmuth C. Zeitnitz T. Ziegler A. Bonissent 4 P. Coyle 4 C. Curtil 4 A. Ealet 4 D. Fouchez 4 P. Payre 4 A. Tilquin 4 F. Ragusa A. David H. Dietl G. Ganis K. Hüttmann G. Lütjens W. Männer H.-G. Moser R. Settles M. Villegas G. Wolf J. Beacham K. Cranmer I. Yavin J. Boucrot 5 O. Callot 5 M. Davier 5 L. Duflot 5 J.-F. Grivaz 5 Ph. Heusse 5 A. Jacholkowska 5 L. Serin 5 J.-J. Veillet 5 P. Azzurri G. Bagliesi T. Boccali L. Foa A. Giammanco A. Giassi F. Ligabue A. Messineo F. Palla G. Sanguinetti A. Sciaba G. Sguazzoni P. Spagnolo R. Tenchini A. Venturi P.G. Verdini O. Awunor G.A. Blair G. Cowan A. Garcia-Bellido M.G. Green T. Medcalf A. Misiejuk J.A. Strong P. Teixeira-Dias R.W. Clifft T.R. Edgecock P.R. Norton I.R. Tomalin J.J. Ward B. Bloch-Devaux 6 D. Boumediene 6 P. Colas 6 B. Fabbro 6 E. Lançon 6 M.-C. Lemaire 6 E. Locci 6 P. Perez 6 J. Rander 6 B. Tuchming 6 B. Vallage 6 A.M. Litke G. Taylor C.N. Booth S. Cartwright F. Combley P.N. Hodgson M. Lehto L.F. Thompson A. Böhrer S. Brandt C. Grupen J. Hess A. Ngac G. Prange C. Borean G. Giannini H. He J. Putz J. Rothberg S.R. Armstrong K. Berkelman D.P.S. Ferguson Y. Gao S. Gonzalez O.J. Hayes H. Hu S. Jin J. Kile P.A. Mcnamara Iii J. Nielsen Y.B. Pan J.H. von Wimmersperg-Toeller W. Wiedenmann J. Wu Sau Lan Wu X. Wu G. Zobernig G. Dissertori
1 LAPP - Laboratoire d'Annecy de Physique des Particules
2 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
3 LLR - Laboratoire Leprince-Ringuet
4 CPPM - Centre de Physique des Particules de Marseille
5 LAL - Laboratoire de l'Accélérateur Linéaire
6 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
Abstract : A search for the production and non-standard decay of a Higgs boson, h, into four taus through intermediate pseudoscalars, a, is conducted on 683 pb-1 of data collected by the ALEPH experiment at centre-of-mass energies from 183 to 209 GeV. No excess of events above background is observed, and exclusion limits are placed on the combined production cross section times branching ratio, \xi^2 = \sigma(e+e- --> Zh)/\sigma_{SM}(e+e- --> Zh) x B(h --> aa)x B(a --> \tau^+\tau^-)^2. For mh < 107 GeV/c2 and 4 < ma < 10 GeV/c2, \xi^2 > 1 is excluded at the 95% confidence level.
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Submitted on : Thursday, March 11, 2010 - 5:35:49 PM
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IN2P3 | LLR | LAPP | CNRS | X-LLR | X | LPC-CLERMONT | LAL | UNIV-SAVOIE | CPPM | UNIV-AMU | PRES_CLERMONT | DSM-IRFU | CEA | CEA-DRF | X-DEP-PHYS | UGA

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S. Schael, R. Barate, R. Brunelière, I. de Bonis, D. Decamp, et al.. Search for neutral Higgs bosons decaying into four taus at LEP2. Journal of High Energy Physics, Springer, 2010, 5, pp.049. ⟨10.1007/JHEP05(2010)049⟩. ⟨in2p3-00463280⟩

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