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

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

S. Schael,The ALEPH Collaboration,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,Mokhtar 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,Giuseppe Raso,F. Ruggieri,G. Selvaggi,L. Silvestris,P. Tempesta,Alessia Rita 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,Luigi (Gigi) 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,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,Vitaliano Ciulli,E. Focardi,G. Parrini,A. Antonelli,G. Bencivenni,F. Bossi,G. Capon,F. Cerutti,Vitaliano 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,Raymond 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,Christophe Delaere,G. Leibenguth,V. Lemaitre,U. Blumenschein,F. Hölldorfer,K. Jakobs,F. Kayser,A.-S. Müller,B. Renk,H.-G. Sander,Sascha 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,Tommaso Boccali,L. Foà,A. Giammanco,A. Giassi,Franco Ligabue,A. Messineo,F. Palla,G. Sanguinetti,A. Sciabà,Giacomo Sguazzoni,Paolo Spagnolo,R. Tenchini,A. Venturi,P.G. Verdini,Onuora 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,Brigitte Bloch-Devaux,D. Boumediene,P. Colas,B. Fabbro,E. Lançon,M.-C. Lemaire,E. Locci,P. Pérez,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,Kyle Cranmer,D.P.S. Ferguson,Y. Gao,S. Gonzalez,O.J. Hayes,H. Hu,S. Jin,J. Kile,P.A. McNamara Iii,Jason Nielsen,Y.B. Pan,J.H. Von Wimmersperg-Toeller,W. Wiedenmann,J. Wu,Sau Lan Wu,X. Wu,G. Zobernig,G. Dissertori,J.D. Hansen,J.R. Hansen,M. Antonelli,David Hutchcroft,Alexander Finch,Christopher Booth;S. Schael;The ALEPH Collaboration;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;Mokhtar 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;Giuseppe Raso;F. Ruggieri;G. Selvaggi;L. Silvestris;P. Tempesta;Alessia Rita 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;Luigi (Gigi) 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;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;Vitaliano Ciulli;E. Focardi;G. Parrini;A. Antonelli;G. Bencivenni;F. Bossi;G. Capon;F. Cerutti;Vitaliano 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;Raymond 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;Christophe Delaere;G. Leibenguth;V. Lemaitre;U. Blumenschein;F. Hölldorfer;K. Jakobs;F. Kayser;A.-S. Müller;B. Renk;H.-G. Sander;Sascha 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;Tommaso Boccali;L. Foà;A. Giammanco;A. Giassi;Franco Ligabue;A. Messineo;F. Palla;G. Sanguinetti;A. Sciabà;Giacomo Sguazzoni;Paolo Spagnolo;R. Tenchini;A. Venturi;P.G. Verdini;Onuora 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;Brigitte Bloch-Devaux;D. Boumediene;P. Colas;B. Fabbro;E. Lançon;M.-C. Lemaire;E. Locci;P. Pérez;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;Kyle Cranmer;D.P.S. Ferguson;Y. Gao;S. Gonzalez;O.J. Hayes;H. Hu;S. Jin;J. Kile;P.A. McNamara Iii;Jason Nielsen;Y.B. Pan;J.H. Von Wimmersperg-Toeller;W. Wiedenmann;J. Wu;Sau Lan Wu;X. Wu;G. Zobernig;G. Dissertori;J.D. Hansen;J.R. Hansen;M. Antonelli;David Hutchcroft;Alexander Finch;Christopher Booth;
the european physical journal c 2006 Vol. 49 pp. 439-455
182
booth2006thesearch

Abstract

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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10.1140/epjc/s10052-006-0158-6
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