Search for pair-production of long-lived heavy charged particles in e+e− annihilation

R Barate ,I.C Park,S Chen,T Wang,L Zhang,M.G Green,B Jost ,S.n Black ,P Colas ,P Henrard ,R Fantechi ,P Gay ,J C Montret ,U Becker ,D Décamp ,A Giassi ,M Talby ,R Cavanaugh ,R Richter ,J H Von Wimmersperg-Toeller ,G Mäggi ,A Antonelli ,B Renk ,S Nuzzo ,G Parrini ,A Blondel ,A Colaleo ,G Hughes ,J.g Lynch ,A Venturi ,G Graefe ,J C Brient ,G Lütjens ,G Zito ,J.m Crespo ,J Carr ,E P Whelan ,E Fernández ,R.m Turnbull ,C Raine ,J B Hansen ,P Pérez ,J.t Chambers ,A Höcker ,S Werner ,F Motsch ,M Jacquet ,T.c Greening ,H Dietl ,C Ferdi ,P H Hansen ,V Büscher ,S J Dorris ,P Perret ,Y Xie ,R Beuselinck ,W Tejessy ,I Ferrante ,I G Knowles ,Philippe Ghez ,P Morawitz ,G Tonelli ,W Blum ,D Casper ,B Rensch ,J Jousset ,E Focardi ,A Wäänänen ,E E Kluge ,R Settles ,P G Verdini ,S Schael ,M Maggi ,M.-N Minard ,J F Foss ,P Tempesta ,O.j Hayes ,Á Pascual ,C Goy ,J D Hansen ,J F Pusztaszeri ,A P Betteridge ,P Laurelli ,I Lehraus ,F Thomson ,G Sanguinetti ,C Hoffmann ,M Apollonio ,J A Perlas ,R Berlich ,H Kroha ,G Bagliesi ,W Wiedenmann ,G Batignani ,A Finch ,J Rander ,J Lin ,C Grupen ,P Spagnolo ,M Wunsch ,Rod Boswell ,M Rumpf ,E Simopoulou ,E Lançon ,L Bosisio ,J P Lees ,A Cordier ,A Böhrer ,G Daskalakis ,M P Casado ,G Wolf ,G Musolino ,F Foster ,A Sadouki ,J Nielsen ,G Quast ,D Botterill ,V O’shea ,X T Huang ,K Jakobs ,M H Lehto ,O Schneider ,A Gregorio ,J.j Aubert ,M Thulasidas ,G Dissertori ,R Hagelberg ,G Calderini ,A Barrès ,S Wasserbaech ,C Vannini ,J.y Nief ,H G Moser ,W Orejudos ,R W Clifft ,A Rosowsky ,P Hanke ,J Steinberger ,D Zerwas ,P Elmer ,O Callot ,G Mannocchi ,C.n Booth ,G Gelao ,A Roussarie ,D Creanza ,A Vayaki ,P Perrodo ,G Bencivenni ,F Ligabue ,G Giannini ,P Janot ,J.c Thompson ,S Goodsir ,D Schlatter ,I Scott ,A Wagner ,Y Saadi ,H Stenzel ,I Riu ,G Bologna ,F Combley ,M Corden ,Hongbo Hu ,G.a Blair ,N Marinelli ,J F Renardy ,K M Smith ,Ll Garrido ,P Maley ,E B Martin ,A Kyriakis ,F Le Diberder ,M.d Williams ,G Hansper ,A Ranieri ,H Drevermann ,M Cattaneo ,W Kozanecki ,M A Ciocci ,M.i Williams ,A Tilquin ,Alison Wright ,F Machefert ,J M Scarr ,N Konstantinidis ,B Vallage ,C Geweniger ,S.r Armstrong ,S J Haywood ,T Fearnley ,D Pallin ,A Moutoussi ,R Xu ,K Affholderbach ,E Thomson ,J R Hansen ,G Rizzo ,M Martı́nez ,M Schmidt ,M.s Kelly ,C Georgiopoulos ,R Alemany ,M Girone ,Р Тенчини ,A.w Halley ,C Diaconu ,T.r Edgecock ,A Juste ,A Falvard ,J.a Nash ,C Bozzi ,Siegmund Brandt ,E Locci ,P Rosnet ,Pedro Saraiva ,B Gobbo ,X Wu ,P Coyle ,D Kühn ,H Wachsmuth ,A Jachołkowska ,I R Tomalin ,J Proriol ,C Zeitnitz ,B Pietrzyk ,R St Denis ,J P Schuller ,A S Thompson ,A Messineo ,S Cartwright ,M Fernández-Bosman ,L Curtis ,C Guicheney ,P Payre ,T Huehn ,G Iaselli ,Y Gao ,F Ruggieri ,B Bloch-Devaux ,E Charles ,G Cowan ,M Aleppo ,C Brew ,G Ganis ,J Pütz ,F Murtas ,D Buskulic ,P Van Gemmeren ,A Trabelsi ,F Palla ,B.s Nilsson ,P Heusse ,E Rohne ,G Rudolph ,J Rothberg ,M H Schune ,V Ciulli ,G Raso ,V Hepp ,G Crawford ,C Markou ,S Monteil ,J M Yamartino ,J Schwindling ,P Colrain ,F J Munoz Sanchez ,P Comas ,C Boyer ,M Carpinelli ,Q Ouyang ,A Rosado-Schlosser ,P Mató ,R.w Williams ,E Tournefier ,P R Norton ,A Lucotte ,M De Palma ,G N Taylor ,M Frank ,M Davier ,P.a Mcnamara ,A M Litke ,P S Marrocchesi ,R Dell’orso ,C K Bowdery ,J M Rossignol ,W Männer ,J.h Dann ,F Podlyski ,S Orteu ,J.-F Grivaz ,J J Veillet ,F Teubert ,M Chmeissani ,F Cerutti ,R Miquel ,J Walsh ,A.o Bazarko ,L M Mir ,M Delfino ,C Benchouk ,A Putzer ,F Ranjard ,K Kleinknecht ,S Simion ,T Sloan ,P Campana ,F Ragusa ,L Passalacqua ,C Padilla ,D.p.s Ferguson ,Z Ajaltouni ,S González ,B Michel ,A Pacheco ,A Tricomi ,J Boucrot ,M Pepe-Altarelli ,L M Bryant ,J Lefrançois ,G Lutters ,A Minten ,Irena Nikolić ,J Knobloch ,A Bonissent ,S Jin ,R Forty ,A M Lutz ,P Azzurri ,J Reeve ,J K Sedgbeer ,K Tittel ,G Selvaggi ,J A Strong ,S L Wu ,R Della Marina ,G Bujosa ,I Videau ,P Teixeira-Dias ,S Bettarini ,D E Jaffe ,M.a Mcneil ,W Cameron ,G Felici ,D Rousseau ,D M Binnie ,A Lusiani ,L Duflot ,P Girtler ,A M Stacey ,C Gotzhein ,H Seywerd ,H G Sander ,L Smolík ,D Calvet ,F Stephan ,W Zhao ,M C Lemaire ,P Bright-Thomas ,A Valassi ,D Abbaneo ,G Rolandi ,J Harvey ,R W L Jones ,F Bossi ,S Xue ,A Sciabà ,Y Pan ,P J Dornan ,K Trabelsi ,W M Newton ,O Leroy ,L Silvestris ,H Videau ,K Zachariadou ,L Moneta ,A Rougé ,G Capon ,B Fabbro ,G Lütz ,J M Nachtman ,L.f Thompson ,M Schmitt ,J Sommer ,V Chiarella ,E Kneringer ,T Medcalf ,J Zhang,D.W Kim,H.Y Kim,G Zobernig

doi:10.1016/s0370-2693(97)00715-6

Search for pair-production of long-lived heavy charged particles in e+e− annihilation

R Barate , I.C Park + Show 390 more

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https://doi.org/10.1016/s0370-2693(97)00715-6

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Journal: Physics Letters B	Publication Date: Jul 1, 1997
Citations: 27

Affiliation: Laboratoire d’Annecy de Physique des Particules, Institut National de Physique Nucléaire et de Physique des Particules, French National Centre for Scientific Research

#ALEPH Detector #Singly-charged Particles + Show 8 more

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Abstract

A search for pair-production of long-lived, heavy, singly-charged particles has been performed with data collected by the ALEPH detector at a centre-of-mass energy of 172 GeV. Data at \sqrt{s} = 161, 136, and 130 GeV are also included to improve the sensitivity to lower masses. No candidate is found in the data. A model-independent 95% confidence level upper limit on the production cross section at 172 GeV of 0.2-0.4pb is derived for masses between 45 and 86 GeV/c^2. This cross section limit implies, assuming the MSSM, a lower limit of 67 (69) GeV/c^2 on the mass of right- (left-) handed long-lived scalar taus or scalar muons and of 86 GeV/c^2 on the mass of long-lived charginos.

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