Study of the four-fermion final state at the Z resonance

6533b856fe1ef96bd12b1dbc

RESEARCH PRODUCT

Study of the four-fermion final state at the Z resonance

Damir Buskulic David William Casper I De Bonis D Décamp P Ghez C Goy J P Lees M N Minard P Odier B Pietrzyk F Ariztizabal M Chmeissani J M Crespo I Efthymiopoulos E Fernández M Fernández-bosman V Gaitan L Garrido M Martínez S Orteu A Pacheco C Padilla Fabrizio Palla A Pascual J A Perlas F Sánchez F Teubert D Creanza M De Palma A Farilla Giuseppe Iaselli G Maggi N Marinelli S Natali S Nuzzo A Ranieri G Raso F Romano F Ruggieri G Selvaggi L Silvestris P Tempesta G Zito X Huang J Lin Q Ouyang T Wang Y Xie R Xu S Xue J Zhang L Zhang W Zhao G Bonvicini J Boudreau P Comas P Coyle H Drevermann A Engelhardt Roger W Forty M Frank G Ganis C Gay M Girone R Hagelberg J Harvey R Jacobsen B Jost J Knobloch Ivan Lehraus M Maggi C Markou E B Martin P Mato H Meinhard Adolf G Minten R Miquel P Palazzi J R Pater P Perrodo J F Pusztaszeri F Ranjard Luigi Rolandi W D Schlatter M Schmelling W Tejessy I R Tomalin R Veenhof A Venturi H W Wachsmuth W Wiedenmann W Witzeling J Wotschack Ziad J Ajaltouni Maria Bardadin-otwinowska A Barrès C Boyer A Falvard P Gay C Guicheney P Henrard J Jousset B Michel S Monteil J C Montret D Pallin P Perret F Podlyski J Proriol J M Rossignol F Saadi Tom Fearnley J B Hansen J D Hansen J R Hansen P H Hansen S D Johnson R Møllerud B S Nilsson A Kyriakis Errietta Simopoulou I Siotis Anna Vayaki K Zachariadou A Blondel G R Bonneaud J C Brient P Bourdon L Passalacqua A Rougé M Rumpf R Tanaka Andrea Valassi M Verderi H L Videau D J Candlin M I Parsons E Veitch E Focardi G Parrini M Corden M C Delfino C H Georgiopoulos D E Jaffe A Antonelli G Bencivenni G Bologna F Bossi P Campana G Capon F Cerutti V Chiarella G Felici P Laurelli G Mannocchi F Murtas G P Murtas M Pepé-altarelli S Salomone P Colrain I Ten Have I G Knowles J G Lynch W J Maitland W T Morton C Raine P Reeves J M Scarr K Smith M G Smith A S Thompson S Thorn R M Turnbull U Becker O Braun C Geweniger P Hanke V Hepp E E Kluge A Putzer B Rensch M Schmidt H Stenzel K Tittel M Wunsch R Beuselinck David M Binnie W Cameron M Cattaneo D J Colling Peter J Dornan J F Hassard N P Konstantinidis L Moneta A Moutoussi J Nash D G Payne G San Martin J K Sedgbeer A G Wright G Dissertori P Girtler E Kneringer D Kuhn G Rudolph C K Bowdery T J Brodbeck A J Finch F Foster G Hughes D Jackson N R Keemer M Nuttall A D Patel Terence Sloan S W Snow E P Whelan A Galla A M Greene K Kleinknecht J Raab B Renk H G Sander H Schmidt S M Walther R Wanke B Wolf A M Bencheikh C Benchouk A Bonissent D Calvet J Carr C A Diaconu F Etienne D Nicod P Payre L Roos D Rousseau M Talby I Abt S Adlung R W Assmann C Bauer Walter Blum D Brown Paolo Walter Cattaneo Bernd Dehning H Dietl Friedrich Dydak A W Halley K Jakobs H Kroha J Lauber D Lehner G Lütjens Gerhard Lutz W Männer H G Moser R H Richter J Schröder A S Schwarz Ronald Settles H C J Seywerd U Stierlin U Stiegler R Saint-denis G Wolf R Alemany J Boucrot O Callot A Cordier F Courault M Davier L Duflot J F Grivaz P Heusse M Jacquet P Janot D W Kim F R Le Diberder J Lefrançois A M Lutz G Musolino I A Nikolic H J Park I C Park M H Schune S Simion J J Veillet I Videau D Abbaneo G Bagliesi G Batignani S Bettarini U Bottigli C Bozzi G Calderini M Carpinelli M A Ciocci V Ciulli R Dell'orso I Ferrante F Fidecaro L Foà F Forti A Giassi M A Giorgi A Gregorio F Ligabue A Lusiani P S Marrocchesi A Messineo G Rizzo G Sanguinetti A Sciabà P Spagnolo Jack Steinberger Roberto Tenchini G Tonelli G Triggiani C Vannini P G Verdini J Walsh A P Betteridge Y Gao M G Green D L Johnson T Medcalf L M Mir I S Quazi J A Strong V Bertin David R Botterill R W Clifft T R Edgecock S Haywood M Edwards P Maley P R Norton J C Thompson B Bloch-devaux P Colas H Duarte S Emery Witold Kozanecki E Lançon M C Lemaire E Locci B Marx P Pérez J Rander J F Renardy A Rosowsky A Roussarie J P Schuller J Schwindling D Si Mohand A. Trabelsi B Vallage R P Johnson A M Litke G Taylor J Wear A Beddall C N Booth C Boswell S L Cartwright F Combley I Dawson A Köksal M Letho M W Newton C Rankin L F Thompson A Böhrer S Brandt G D Cowan E Feigl Claus Grupen G Lutters J A Minguet-rodríguez F Rivera P Saraiva U Schäfer L Smolik L Bosisio R Della Marina G Giannini B Gobbo L Pitis F Ragusa H Kim J E Rothberg S R Wasserbaech S R Armstrong L Bellantoni J S Conway P Elmer Z Feng D P S Ferguson Y S Gao S González J Grahl J L Harton O J Hayes H Hu P A Mcnamara J M Nachtman W Orejudos Pan Yi Bin Y Saadi M Schmitt I Scott V Sharma J Turk A M Walsh F V Weber T Wildish Wu Sau Lan X Wu J M Yamartino M Zheng G Zobernig

subject

Physics Particle physics Physics and Astronomy (miscellaneous)[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]010308 nuclear & particles physics Hadron Elementary particle Fermion 01 natural sciences Resonance (particle physics)Luminosity Standard Model Nuclear physics ALEPH Experiment 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment 010306 general physics Engineering (miscellaneous)ALEPH experiment Particle Physics - Experiment Lepton

description

The process e+e−→, where l is a charged or a neutral lepton and f any charged fermion, is analyzed. The study uses the ALEPH data collected at LEP from 1989 to 1993 at centre-of-mass energies between 88 and 95 GeV, corresponding to almost two million hadronic Z decays and to a total integrated luminosity of 79 pb−1. For all channels, the data agree well with the standard model expectation both in shape and normalization. The indication of an excess in the\(e^ + e^ - \to \tau ^ + \tau ^ - f\bar f\) channel, reported by ALEPH in 1991, is not confirmed.

year	journal	country	edition	language
1995-01-01

10.1007/bf01496576 https://hdl.handle.net/11368/2563353