Four-jet final state production in e+e- collisions at centre-of-mass energies of 130 and 136 GeV

6533b7cffe1ef96bd1259a51

RESEARCH PRODUCT

Four-jet final state production in e+e- collisions at centre-of-mass energies of 130 and 136 GeV

Fabio Cerutti R. W. Clifft Jean-claude Montret Stefan Simion S. Wasserbaech S. Werner C. Grupen Paolo Azzurri Günther Dissertori P. Henrard R. Fantechi M. Aleppo L. Moneta J.g. Lynch S. Gonzalez G. B. Taylor P. Tempesta R. Hagelberg P. Comas G. Bujosa Piero Giorgio Verdini M. H. Schune Robert Richter K. Tittel L. Passalacqua Lucia Silvestris U. Becker H. Dietl G. Mannocchi A. W. Halley Konrad Kleinknecht B. Michel J. Putz H. Wachsmuth Dominique Pallin C. Vannini R. Xu J. C. Brient Andre Tilquin Ting-chi Wang B. Gobbo J. J. Veillet P. Saraiva D. W. Kim I. Videau I. C. Park R. Della Marina T. Fearnley H. Hu I. Abt W. Orejudos R. P. Johnson M. Jacquet P. Girtler Lei Zhang G. Lütjens Franco Ligabue D. Decamp Jørgen Beck Hansen Donato Creanza G. Bencivenni C. Padilla C. Bozzi S. L. Cartwright Y. B. Pan Dirk Zerwas E. P. Whelan A. Gregorio J.d. Hansen G. Hansper Salvatore Nuzzo Imma Riu S. Schael B. Pietrzyk J. Sommer M. C. Lemaire Eric Lancon J. M. Rossignol A. Koksal B. Rensch B. Renk F. Ruggieri E. Rohne Roberto Dell'orso H.y. Kim A. Rosado-schlosser John T Harvey Alan M. Litke Alessandro Giassi Duccio Abbaneo J. F. Renardy W. Tejessy Elizabeth Locci C. K. Bowdery Jiali Lin G. Musolino V. Hepp A. M. Stacey C. Gotzhein A. M. Greene Mario Maggi Werner Wiedenmann Gy. Wolf P. A. Mcnamara Stephen Haywood P. Colrain Patrick Janot A. Galla G. A. Cowan Val O'shea Marco Cattaneo A. P. Betteridge Ll. Garrido D. Buskulic C. Boyer A. Wäänänen G. Graefe A.o. Bazarko D. R. Botterill M. De Palma G. Felici D. E. Jaffe G. Hughes Philippe Odier Christian Bauer A. Ranieri I. Lehraus Giuseppe Raso Pierluigi Campana P. Mato G. Lutters B.s. Nilsson Andrea Sciabà D.p.s. Ferguson Giovanna Selvaggi O. Schneider Markus Frank Y. Saadi Fabrizio Palla F. Combley Pablo Rodriguez Perez J. Grahl M. Delfino M. Delfino Vitaliano Chiarella Paul Hanke J.t. Chambers G. Rudolph D. Kuhn B. Bloch-devaux M. Corden S. Xue T. Oest Z. Y. Feng C. Benchouk K. Jakobs Maria Girone M.d. Williams J.m. Yamartino Jorn Dines Hansen G. Rizzo Vitaliano Ciulli David Rousseau J.a. Strong C. N. Booth Ian R Tomalin C. Raine Maria Agnese Ciocci S. Monteil M. Letho J. Jousset Michael Schmitt Nancy Marinelli K. Trabelsi L. Bosisio W. Männer J. Schwindling M. A. Mcneil F. Murtas C. Goy F. Foster J. Boucrot M. Pepe-altarelli Joseph Rothberg F. Thomson Christian Zeitnitz Yang Gao A. Vayaki Yuehong Xie P. Perrodo Giuseppe Bagliesi S. J. Dorris Q. Ouyang K. Zachariadou O.j. Hayes R. Settles Maria Pilar Casado A. Antonelli A. Pacheco L. Smolik M. Zheng B. Marx M. N. Minard Kevin M. Smith Guido Tonelli F. Stephan A. Roussarie C. Guicheney J. Lefrançois G.a. Blair I. Ferrante G. Calderini Christopher Brew Stephanie Brandt F. Le Diberder J. J. Walsh J.h. Dann H. Drevermann Francesco Ragusa Francesco Ragusa Roberto Tenchini P. Maley M. Rumpf A. Minten J. F. Pusztaszeri T. R. Edgecock M. Chmeissani X. Huang A. Cordier R W Assmann J. P. Lees T. J. Sloan C. Georgiopoulos J. M. Scarr M. I. Williams A. M. Lutz Sau Lan Wu Giuseppe Zito H. G. Sander G.p. Murtas A. Barres C. Hoffmann Paolo Laurelli A. J. Finch Andrea Venturi O. Callot P. Colas F. Bossi A. Putzer S.r. Armstrong G. Sanguinetti Paolo Spagnolo Jie Zhang I. De Bonis M. Wunsch Giorgio Maggi B. Jost Alberto Messineo P. Van Gemmeren D. M. Binnie Ettore Focardi Ettore Focardi John Rander E. Simopoulou T.c. Greening M. Carpinelli Nikolaos Konstantinidis P. Rensing W. Kozanecki E. B. Martin A. M. Bencheikh R. M. Turnbull F. Podlyski R. St. Denis David Calvet G. Bologna B. Vallage C. Markou R. Beuselinck Roger Forty A. Lusiani W. Cameron Mossadek Talby J. A. Perlas M. Martinez Ramon Miquel A. S. Thompson P. R. Norton J. M. Crespo Jane Nachtman S. Thorn P. Reeves L. M. Bryant J. Reeve I.j. Scott André Rougé A. Pascual F. Dydak F. Dydak P. S. Marrocchesi S. Emery Cristinel Diaconu M. Schmelling Ll.m. Mir A. Böhrer Laurent Duflot I. Efthymiopoulos Lester D.r. Thompson J.h. Von Wimmersperg-toeller A. Wagner Y. S. Gao S.n. Black P. Payre I. Siotis Giuseppe Iaselli W. Blum H. Seywerd I. G. Knowles H.j. Park M. Thulasidas M. Apollonio Peter Elmer R.w. Williams G. Crawford Andreas Hocker W. M. Newton L. Bellantoni J. Knobloch Anna Colaleo J. K. Sedgbeer A. Bonissent A. Bonissent T. Medcalf Georg Zobernig I. Nikolic G. Lutz M. G. Green G. Giannini J. P. Schuller M. Davier G. Batignain Arnaud Lucotte C. Geweniger Philippe Rosnet E. E. Kluge Ph. Heusse H. G. Moser Hasko Stenzel P. H. Hansen J. J. Aubert J. J. Aubert H. Videau H. Videau Alain Falvard J. Carr G. Parrini J. C. Thompson A. M. Walsh S. Bettarini Philippe Ghez Aristotelis Kyriakis D. Casper F. Sanchez P. Coyle G. Gelao V. Büscher G. Capon A.e. Wright A. Juste Gunter Quast Xin Wu W. Zhao F. Ranjard Emmerich Kneringer A. Moutoussi R. Boswell L. Curtis M. Fernandez-bosman S. Orteu A. Sadouki R. Alemany L. Rolandi M.g. Schmidt Joseph Proriol F. Teubert E. Fernandez P. Perret A. Valassi Hubert Kroha A. Blondel A. Trabelsi J. Steinberger D. Schlatter Ziad Ajaltouni Jean-francois Grivaz P. J. Dornan Jordan Nash Gerardo Ganis

subject

Physics Particle physics Luminosity (scattering theory)Physics and Astronomy (miscellaneous)Electron–positron annihilation Physics Astrophysics::High Energy Astrophysical Phenomena Hadron Settore FIS/01 - Fisica Sperimentale Jet (particle physics)e+e- experiment Standard Model ALEPH Experiment Nuclear physics Pair production Higgs boson High Energy Physics::Experiment ALEPH experiment Particle Physics - Experiment

description

The four-jet final state is analyzed to search for hadronic decays of pair-produced heavy particles. The analysis uses the ALEPH data collected at LEP in November 1995 at centre-of-mass energies of 130 and 136 GeV, corresponding to a total integrated luminosity of 5.7 pb(-1). An excess of four-jet events is observed with respect to the standard model predictions. In addition, these events exhibit an enhancement in the sum of the two di-jet masses around 105 GeV/c(2). The properties of these events are studied and compared to the expectations from standard processes and to pair production hypotheses. RI ANTONELLI, ANTONELLA/C-6238-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; St.Denis, Richard/C-8997-2012; Sanchez, Federico/F-5809-2012; Ferrante, Isidoro/F-1017-2012

year	journal	country	edition	language
1996-06-01

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