The data collected in 1998 by ALEPH at LEP at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.2 pb−1, are analysed to search for invisible decays of a Higgs boson produced in the reaction . The number of events found in the data and their properties are in agreement with the Standard Model expectation. This search results in an improved 95% C.L. lower limit on the Higgs boson mass of 95.4 GeV/c2, assuming it decays totally invisibly and for a production cross section equal to that of the Standard Model.

Search for an invisibly decaying Higgs boson in e+e−collisions at 189 GeV / R Barate;D Decamp;P Ghez;C Goy;S Jezequel;J.-P Lees;F Martin;E Merle;M.-N Minard;B Pietrzyk;R Alemany;S Bravo;M.P Casado;M Chmeissani;J.M Crespo;E Fernandez;M Fernandez-Bosman;Ll Garrido;E Graugès;A Juste;M Martinez;G Merino;R Miquel;Ll.M Mir;P Morawitz;A Pacheco;I Riu;H Ruiz;A Colaleo;D Creanza;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;U Becker;G Boix;O Buchmüller;M Cattaneo;F Cerutti;V Ciulli;G Dissertori;H Drevermann;R.W Forty;M Frank;F Gianotti;T.C Greening;A.W Halley;J.B Hansen;J Harvey;P Janot;B Jost;I Lehraus;O Leroy;P Maley;P Mato;A Minten;A Moutoussi;F Ranjard;L Rolandi;D Schlatter;M Schmitt;O Schneider;P Spagnolo;W Tejessy;F Teubert;E Tournefier;A.E Wright;Z Ajaltouni;F Badaud;G Chazelle;O Deschamps;S Dessagne;A Falvard;C Ferdi;P Gay;C Guicheney;P Henrard;J Jousset;B Michel;S Monteil;J-C Montret;D Pallin;P Perret;F Podlyski;J.D Hansen;J.R Hansen;P.H Hansen;B.S Nilsson;B Rensch;A Wäänänen;G Daskalakis;A Kyriakis;C Markou;E Simopoulou;A Vayaki;A Blondel;J.-C Brient;F Machefert;A Rougé;M Swynghedauw;R Tanaka;A Valassi;H Videau;E Focardi;G Parrini;K Zachariadou;M Corden;C Georgiopoulos;A Antonelli;G Bencivenni;G Bologna;F Bossi;P Campana;G Capon;V Chiarella;P Laurelli;G Mannocchi;F Murtas;G.P Murtas;L Passalacqua;M Pepe-Altarelli;M Chalmers;L Curtis;J.G Lynch;P Negus;V O'Shea;B Raeven;C Raine;D Smith;P Teixeira-Dias;A.S Thompson;J.J Ward;R Cavanaugh;S Dhamotharan;C Geweniger;P Hanke;V Hepp;E.E Kluge;A Putzer;K Tittel;S Werner;M Wunsch;R Beuselinck;D.M Binnie;W Cameron;P.J Dornan;M Girone;S Goodsir;N Marinelli;E.B Martin;J Nash;J Nowell;H Przysiezniak;A Sciabà;J.K Sedgbeer;E Thomson;M.D Williams;V.M Ghete;P Girtler;E Kneringer;D Kuhn;G Rudolph;C.K Bowdery;P.G Buck;G Ellis;A.J Finch;F Foster;G Hughes;R.W.L Jones;N.A Robertson;M Smizanska;M.I Williams;I Giehl;F Hölldorfer;K Jakobs;K Kleinknecht;M Kröcker;A.-S Müller;H.-A Nürnberger;G Quast;B Renk;E Rohne;H.-G Sander;S Schmeling;H Wachsmuth;C Zeitnitz;T Ziegler;J.J Aubert;A Bonissent;J Carr;P Coyle;A Ealet;D Fouchez;A Tilquin;M Aleppo;M Antonelli;S Gilardoni;F Ragusa;V Büscher;H Dietl;G Ganis;K Hüttmann;G Lütjens;C Mannert;W Männer;H.-G Moser;S Schael;R Settles;H Seywerd;H Stenzel;W Wiedenmann;G Wolf;P Azzurri;J Boucrot;O Callot;S Chen;M Davier;L Duflot;J.-F Grivaz;Ph Heusse;A Jacholkowska;M Kado;J Lefrançois;L Serin;J.-J Veillet;I Videau;J.-B de Vivie de Régie;D Zerwas;G Bagliesi;T Boccali;C Bozzi;G Calderini;R Dell'Orso;I Ferrante;A Giassi;A Gregorio;F Ligabue;P.S Marrocchesi;A Messineo;F Palla;G Rizzo;G Sanguinetti;G Sguazzoni;R Tenchini;A Venturi;P.G Verdini;G.A Blair;J Coles;G Cowan;M.G Green;D.E Hutchcroft;L.T Jones;T Medcalf;J.A Strong;D.R Botterill;R.W Clifft;T.R Edgecock;P.R Norton;J.C Thompson;I.R Tomalin;B Bloch-Devaux;P Colas;B Fabbro;G Faïf;E Lançon;M.-C Lemaire;E Locci;P Perez;J Rander;J.-F Renardy;A Rosowsky;P Saeger;A Trabelsi;B Tuchming;B Vallage;S.N Black;J.H Dann;C Loomis;H.Y Kim;N Konstantinidis;A.M Litke;M.A McNeil;G Taylor;C.N Booth;S Cartwright;F Combley;P.N Hodgson;M Lehto;L.F Thompson;K Affholderbach;A Böhrer;S Brandt;C Grupen;J Hess;A Misiejuk;G Prange;U Sieler;G Giannini;B Gobbo;J Putz;J Rothberg;S Wasserbaech;R.W Williams;S.R Armstrong;P Elmer;D.P.S Ferguson;Y Gao;S González;O.J Hayes;H Hu;S Jin;J Kile;P.A McNamara III;J Nielsen;W Orejudos;Y.B Pan;Y Saadi;I.J Scott;J Walsh;J.H von Wimmersperg-Toeller;Sau Lan Wu;X Wu;G Zobernig. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 466:(1999), pp. 50-60. [10.1016/S0370-2693(99)01104-1]

Search for an invisibly decaying Higgs boson in e+e−collisions at 189 GeV

FOCARDI, ETTORE;CIULLI, VITALIANO;
1999

Abstract

The data collected in 1998 by ALEPH at LEP at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.2 pb−1, are analysed to search for invisible decays of a Higgs boson produced in the reaction . The number of events found in the data and their properties are in agreement with the Standard Model expectation. This search results in an improved 95% C.L. lower limit on the Higgs boson mass of 95.4 GeV/c2, assuming it decays totally invisibly and for a production cross section equal to that of the Standard Model.
1999
466
50
60
R Barate;D Decamp;P Ghez;C Goy;S Jezequel;J.-P Lees;F Martin;E Merle;M.-N Minard;B Pietrzyk;R Alemany;S Bravo;M.P Casado;M Chmeissani;J....espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/640315
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