Search for Higgs bosons decaying to WW in e + e - collisions at LEP

S. Schael,R. Barate, R. Brunelière,I. De Bonis, D. Decamp, C. Goy,S. Jézéquel, J.-P. Lees,F. Martin,E. Merle, M.-N. Minard,B. Pietrzyk, B. Trocmé, S. Bravo,M.P. Casado,M. Chmeissani,J.M. Crespo,E. Fernandez, M. Fernandez-Bosman, L. 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,J. 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, S. Dessagne, A. Falvard, D. Fayolle,P. Gay, J. Jousset,B. Michel,S. Monteil, D. Pallin, J.M. Pascolo,P. Perret,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, J.-C. Brient,F. Machefert,A. Rougé, H. Videau,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, 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, P. Coyle,C. Curtil, A. Ealet,D. Fouchez,P. Payre, A. Tilquin,F. Ragusa,A. David,H. Dietl, G. Ganis, K. Hüttmann, G. Lütjens, W. Männer, H.-G. Moser,R. Settles,M. Villegas,G. Wolf, J. Boucrot, O. Callot,M. Davier, L. Duflot,J.-F. Grivaz, P. Heusse, A. Jacholkowska, L. Serin,J.-J. Veillet,P. Azzurri,G. Bagliesi,T. Boccali, L. Foà,A. Giammanco, A. Giassi,F. Ligabue, A. Messineo,F. Palla, G. Sanguinetti, A. Sciabà,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,D. Boumediene,P. Colas, B. Fabbro,E. Lançon,M.-C. Lemaire, E. Locci, P. Perez, J. Rander,B. Tuchming,B. Vallage,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,K. Cranmer, D.P.S. Ferguson, Y. Gao,S. González, 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

The European Physical Journal C(2006)

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摘要
A search for Higgs bosons produced in association with a fermion pair, and decaying to WW, is performed with the data collected by the ALEPH detector at centre-of-mass energies ranging from 191 to 209 GeV. The data correspond to an integrated luminosity of 453.2 pb -1 . Thirteen exclusive selections are developed according to the different final state topologies. No statistically significant evidence for a Higgs boson decaying into a WW pair has been found. An upper limit is derived, as a function of the Higgs boson mass, on the product of the e + e - →Hff̄ cross section and the H→WW branching ratio. The data on the search for H→WW are combined with previously published ALEPH results on the search for H→γγ, to significantly extend the limits on the mass of a fermiophobic Higgs boson.
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关键词
Higgs Boson,Invariant Mass,Higgs Boson Mass,Time Projection Chamber,Inant Variable
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