Search for supersymmetry in the photon(s) plus missing energy channels at =161 GeV and 172 GeV

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

doi:10.1016/s0370-2693(97)01555-4

Search for supersymmetry in the photon(s) plus missing energy channels at =161 GeV and 172 GeV

R Barate , M Fernández-Bosman + Show 393 more

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https://doi.org/10.1016/s0370-2693(97)01555-4

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Journal: Physics Letters B	Publication Date: Sep 30, 1997
Citations: 20	License type: cc-by-nc-nd

#Searches For Supersymmetric Particles #Search For Supersymmetry + Show 8 more

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Abstract

Searches for supersymmetric particles in channels with one or more photons and missing energy have been performed with data collected by the ALEPH detector at LEP. The data consist of 11.1 pb −1 at s =161 GeV , 1.1 pb −1 at 170 GeV and 9.5 pb −1 at 172 GeV. The e + e − →ν ν ̄ γ(γ) cross section is measured. The data are in good agreement with predictions based on the Standard Model, and are used to set upper limits on the cross sections for anomalous photon production. These limits are compared to two different SUSY models and used to set limits on the neutralino mass. A limit of 71 GeV/ c 2 at 95% C.L. is set on the mass of the lightest neutralino ( τ χ 1 0 ≤ 3 ns) for the gauge-mediated supersymmetry breaking and LNZ models.

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