Search For The Neutral Higgs Boson From Z0 Decay In The Higgs Mass Range Between 11 And 24 Gev

D. Decamp,B. Deschizeaux, J.-P. Lees,M.-N. Minard,J.M. Crespo,M. Delfino,E. Fernandez,M. Martinez,R. Miquel,Ll.M. Mir,S. Orteu,A. Pacheco,J.A. Perlas,E. Tubau,M.G. Catanesi,M. de Palma, A. Farilla,G. Iaselli, G. Maggi,S. Natali,S. Nuzzo,A. Ranieri,G. Raso, F. Romano,F. Ruggieri,G. Selvaggi,L. Silvestris,P. Tempesta, G. Zito, Y. Gao,H. Hu,D. Huang,S. Jin,T. Ruan,T. Wang,W. Wu,Y. Xie,D. Xu, R. Xu,J. Zhang,Z. Zhang,W. Zhao,H. Albrecht, W.B. Atwood,F. Bird,E. Blucher,T.H. Burnett,T. Charity, H. Drevermann, Ll. Garrido,C. Grab,R. Hagelberg,S. Haywood, B. Jost,M. Kasemann,G. Kellner,J. Knobloch,A. Lacourt,I. Lehraus, T. Lohse,D. Lüke,A. Marchioro,P. Mato,J. May,A. Minten,A. Miotto,P. Palazzi,M. Pepe-Altarelli,F. Ranjard,A. Roth, J. Rothberg,H. Rotscheidt,W. von Rüden,R.ST. Denis,D. Schlatter,M. Takashima,M. talby,H. Taureg,W. Tejessy,H. Wachsmuth,S. Wheeler,W. Wiedenmann,W. Witzeling, J. Wotschack, Z. Ajaltouni,M. Bardadin-Otwinowska,A. Falvard, P. Gay, P. Henrard,J. Jousset,B. Michel,J-C. Montret, D. Pallin, P. Perret,J. Proriol,F. Prulhière,J.D. Hansen,J.R. Hansen,P.H. Hansen,R. Møllerud,G. Petersen,E. Simopoulou,A. Vayaki,J. Badier, A. Blondel,G. Bonneaud,J. Bourotte,F. Braems,J.C. Brient,M.A. Ciocci,G. Fouque,R. Guirlet,A. Rougé,M. Rumpf, R. Tanaka,H. Videau, I. Videau,D.J. Candlin,A. Conti,G. Parrini,M. Corden,C. Georgiopoulos,J.H. Goldman,M. Ikeda,J. Lannutti,D. Levinthal,M. Mermikides,L. Sawyer,G. Stimpfl,A. Antonelli,R. Baldini, G. Bencivenni,G. Bologna,F. Bossi, P. Campana,G. Capon,V. Chiarella,G. de Ninno,B. D'Ettorre-Piazzoli,G. Felici, P. Laurelli,G. Mannocchi,F. Murtas,G.P. Murtas,G. Nicoletti,P. Picchi,P. Zografou,B. Altoon,O. Boyle,A.W. Halley,I. Ten Have,J.L. Hearns,I.S. Hughes,J.G. Lynch,W.T. Morton,C. Raine,J.M. Scarr,K. Smith, A.S. Thompson,B. Brandl,O. Braun,R. Geiges, C. Geweniger, P. Hanke,V. Hepp,E.E. Kluge,Y. Maumary,M. Panter,A. Putzer,B. Rensch,A. Stahl,K. Tittel,M. Wunsch,A.T. Belk,R. Beuselinck, D.M. Binnie,W. Cameron,M. Cattaneo, P.J. Dornan,S. Dugeay,R.W. Forty,A.M. Greene,J.F. Hassard,S.J. Patton,J.K. Sedgbeer,G. Taylor,I.R. Tomalin,A.G. Wright,P. Girtler, D. Kuhn, G. Rudolph,C.K. Bowdery,T.J. Brodbeck,A.J. Finch,F. Foster, G. Hughes,N.R. Keemer,M. Nuttall,B.S. Rowlingson, T. Sloan,S.W. Snow,T. Barczewski,L.A.T. Bauerdick, K. Kleinknecht,B. Renk,S. Roehn, H.-G. Sander,M. Schmelling,F. Steeg,J.-P. Albanese, J.-J. Aubert, C. Benchouk,A. Bonissent,D. Courvoisier, F. Etienne,E. Matsinos,S. Papalexiou,P. Payre, B. Pietrzyk,Z. Qian, W. Blum,P. Cattaneo, G. Cowan,B. Dehning,H. Dietl,M. Fernandez-Bosman,D. Hauff,A. Jahn,E. Lange,G. Lütjens, G. Lutz,W. Männer, H.-G. Moser, Y. Pan,R. Richter, A.S. Schwarz,R. Settles,U. Stiegler,U. Stierlin,J. Thomas,G. Waltermann,V. Bertin,G. de Bouard,J. Boucrot, O. Callot,X. Chen,A. Cordier, M. Davier,G. Ganis,J.-F. Grivaz,Ph. Heusse, P. Janot, V. Journé,D.W. Kim,J. Lefrançois,A.-M. Lutz,J.-J. Veillet,F. Zomer,S.R. Amendolia, G. Bagliesi,G. Batignani,L. Bosisio,U. Bottigli,C. Bradaschia,I. Ferrante,F. Fidecaro, L. Foà,E. Focardi,F. Forti, A. Giassi,M.A. Giorgi,F. Ligabue,A. Lusiani,E.B. Mannelli,P.S. Marrocchesi, A. Messineo, F. Palla,G. Sanguinetti,S. Scapellato,J. Steinberger, R. Tenchini,G. Tonelli,G. Triggiani,J.M. Carter, M.G. Green,P.V. March,T. Medcalf,M.R. Saich,J.A. Strong,R.M. Thomas,T. Wildish,D.R. Botterill, R.W. Clifft,T.R. Edgecock,M. Edwards,S.M. Fisher,J. Harvey,T.J. Jones,P.R. Norton,D.P. Salmon,J.C. Thompson,B. Bloch-Devaux,P. Colas,C. Klopfenstein,E. Lançon, E. Locci,S. Loucatos, L. Mirabito, E. Monnier,P. Perez,F. Perrier, J. Rander,J.-F. Renardy,A. Roussarie,J.-P. Schuller,J.G. Ashman,C.N. Booth,F. Combley,M. Dinsdale,J. Martin,D. Parker,L.F. Thompson,S. Brandt,H. Burkhardt, C. Grupen,H. Meinhard,E. Neugebauer,U. Schäfer,H. Seywerd,B. Gobbo,F. Liello,E. Milotti,F. Ragusa, L. Rolandi, L. Bellantoni,J.F. Boudreau,D. Cinabro,J.S. Conway,D.F. Cowen,Z. Feng,J.L. Harton,J. Hilgart,R.C. Jared,R.P. Johnson, B.W. Leclaire, Y.B. Pan,T. Parker,J.R. Pater,Y. Saadi, V. Sharma,J.A. Wear,F.V. Weber,Sau Lan Wu, S.T. Xue, G. Zobernig

PHYSICS LETTERS B（1990）

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摘要

A search for the neutral Higgs boson in the mass range above 11 GeV (above the H 0 →b b threshold), using the process Z 0 →H 0 e + e − , Z 0 →H 0 μ + μ − and Z 0 → H 0 v v , is performed on data collected by the ALEPH detector corresponding to about 25 000 events of Z 0 → hadrons. Combining all these processes, the mass range excluded is 11 GeV at 95% CL. Together with a previously published result from ALEPH, the mass range excluded is 32 MeV to 24 GeV at 95% CL. This result also extends the excluded mass region for neutral Higgs bosons from supersymmetry.

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