Four-jet final state production in $e^+ e^-$ collisions at centre-of-mass energies ranging from 130 to 184 GeV

6533b860fe1ef96bd12c39fe

RESEARCH PRODUCT

Four-jet final state production in $e^+ e^-$ collisions at centre-of-mass energies ranging from 130 to 184 GeV

R Barate D Buskulic D Decamp P Ghez C Goy J.-p Lees A Lucotte M.-n Minard J.-y Nief B Pietrzyk G Boix M.p Casado M Chmeissani J.m Crespo M Delfino E Fernandez M Fernandez-bosman Ll Garrido E Graugès A Juste M Martinez G Merino R Miquel Ll.m Mir P Morawitz I.c Park A Pascual J.a Perlas I Riu F Sanchez A Colaleo D Creanza M De Palma G Gelao 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 R Alemany U Becker P Bright-thomas D Casper M Cattaneo F Cerutti V Ciulli G Dissertori H Drevermann R.w Forty M Frank F Gianotti R Hagelberg J.b Hansen J Harvey P Janot B Jost I Lehraus P Mato A Minten L Moneta A Pacheco J.-f Pusztaszeri F Ranjard L Rolandi D Rousseau D Schlatter M Schmitt O Schneider W Tejessy F Teubert I.r Tomalin M Vreeswijk H Wachsmuth A Wagner Z Ajaltouni F Badaud G Chazelle O Deschamps 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 Proriol P Rosnet T Fearnley 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 Rumpf A Valassi H Videau T Boccali E Focardi G Parrini K Zachariadou R Cavanaugh M Corden C Georgiopoulos T Huehn D.e Jaffe A Antonelli G Bencivenni G Bologna F Bossi P Campana G Capon V Chiarella G Felici P Laurelli G Mannocchi F Murtas G.p Murtas L Passalacqua M Pepe-altarelli L Curtis S.j Dorris A.w Halley J.g Lynch P Negus V O'shea C Raine J.m Scarr K Smith P Teixeira-dias A.s Thompson E Thomson F Thomson O Buchmüller S Dhamotharan C Geweniger G Graefe P Hanke G Hansper V Hepp E.e Kluge A Putzer J Sommer K Tittel S Werner M Wunsch R Beuselinck D.m Binnie W Cameron P.j Dornan M Girone S Goodsir E.b Martin N Marinelli A Moutoussi J Nash J.k Sedgbeer P Spagnolo M.d Williams V.m Ghete P Girtler E Kneringer D Kuhn G Rudolph A.p Betteridge C.k Bowdery P.g Buck P Colrain G Crawford A.j Finch F Foster G Hughes R.w.l Jones E.p Whelan M.i Williams I Giehl C Hoffmann K Jakobs K Kleinknecht G Quast B Renk E Rohne H.-g Sander P Van Gemmeren C Zeitnitz J.j Aubert C Benchouk A Bonissent G Bujosa J Carr P Coyle A Ealet D Fouchez O Leroy F Motsch P Payre M Talby A Sadouki M Thulasidas A Tilquin K Trabelsi M Aleppo M Antonelli F Ragusa R Berlich W Blum V Büscher H Dietl G Ganis C Gotzhein H Kroha G Lütjens G Lutz C Mannert W Männer H.-g Moser R Richter A Rosado-schlosser S Schael R Settles H Seywerd H Stenzel W Wiedenmann G Wolf J Boucrot O Callot S Chen M Davier L Duflot J.-f Grivaz Ph Heusse A Höcker A Jacholkowska M.m Kado D.w Kim F Le Diberder J Lefrançois A.-m Lutz M.-h Schune L Serin E Tournefier J.-j Veillet I Videau D Zerwas P Azzurri G Bagliesi S Bettarini C Bozzi G Calderini R Dell'orso R Fantechi I Ferrante A Giassi A Gregorio F Ligabue A Lusiani P.s Marrocchesi A Messineo F Palla G Rizzo G Sanguinetti A Sciabà G Sguazzoni J Steinberger R Tenchini C Vannini A Venturi P.g Verdini G.a Blair L.m Bryant J.t Chambers J Coles M.g Green T Medcalf P Perrodo J.a Strong J.h Von Wimmersperg-toeller D.r Botterill R.w Clifft T.r Edgecock S Haywood P Maley P.r Norton J.c Thompson A.e Wright B Bloch-devaux P Colas B Fabbro G Faïf E Lançon M.-c Lemaire E Locci P Perez H Przysiezniak J Rander J.-f Renardy A Rosowsky A Roussarie A. Trabelsi B Vallage S.n Black J.h Dann H.y Kim N Konstantinidis A.m Litke M.a Mcneil G Taylor C.n Booth C.a.j Brew S Cartwright F Combley M.s Kelly M Lehto J Reeve L.f Thompson K Affholderbach A Böhrer S Brandt G Cowan J Foss C Grupen L Smolik F Stephan M Apollonio L Bosisio R Della Marina G Giannini B Gobbo G Musolino J Putz J Rothberg S Wasserbaech R.w Williams S.r Armstrong E Charles P Elmer D.p.s Ferguson Y Gao S González T.c Greening O.j Hayes H Hu S Jin P.a Mcnamara Iii J.m Nachtman J Nielsen W Orejudos Y.b Pan Y Saadi I.j Scott J Walsh Sau Lan Wu X Wu J.m Yamartino G Zobernig

subject

Physics Nuclear and High Energy Physics High energy Aleph Particle physics Jet (fluid)Luminosity (scattering theory)[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]010308 nuclear & particles physics Anomaly (natural sciences)Ranging State (functional analysis)01 natural sciences Standard Model ALEPH Experiment Nuclear physics 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physics Particle Physics - Experiment

description

The four jet topology is analysed in the ALEPH data taken between November 1995 and November 1997, at centre-of-mass energies ranging from 130 to 184 GeV. While an unexpected accumulation of events with a dijet mas sum around 105 GeV/c**2 had been observed during the first run in 1995 at 130/136 GeV, corresponding to an integrated luminosity of 5.7 pb-1, no significant differences between data and standard model prediction is noticed, either in the high energy runs (81.1 pb-1 taken at centre-of-mass energies from 161 to 184 GeV) or in the 7.1 pb-1 recorded during a new short run at 130/136 GeV in 1997. We have found no other explanation for the earlier reported ``four jet anomaly'' than a statistical fluctuation.

year	journal	country	edition	language
1998-01-01

https://hal.in2p3.fr/in2p3-00000309