Search for charged scalar leptons using the OPAL detector at s=161 GeV

K Ackerstaff, G V Alexander,J Allison,N Altekamp,K Ametewee,K J Anderson,Suzanne E Anderson, S Arcelli, S Asai, D Axen,G Azuelos, A H Ball, E Barberio,R J Barlow, R Bartoldus, J R Batley,J Bechtluft, C Beeston,T Behnke,A N Bell, K W Bell,G Bella, S Bentvelsen,P Berlich,Siegfried Bethke, O Biebel,A Biguzzi, V Blobel,I J Bloodworth,J E Bloomer,M Bobinski,P Bock,H M Bosch, M Boutemeur,B T Bouwens,S Braibant,R M Brown, H J Burckhart, C Burgard,R Burgin, P Capiluppi, R K Carnegie, A A Carter,J R Carter,C Y Chang, D G Charlton,D Chrisman,P E L Clarke,Isaac Cohen,J E Conboy,O C Cooke, M Cuffiani,S Dado, C Dallapiccola, G M Dallavalle,S De Jong,L A Del Pozo,K Desch,M S Dixit,E Do Couto E Silva,M Doucet, E Duchovni, G Duckeck,I P Duerdoth, J E G Edwards,P G Estabrooks,H Evans,M Evans,F Fabbri,P Fath,F Fiedler,M Fierro,H M Fischer,R Folman,D G Fong,M Foucher,A Furtjes,P Gagnon,J W Gary,J Gascon,S M Gasconshotkin,N I Geddes,C Geichgimbel, T Geralis, G Giacomelli,P Giacomelli,R Giacomelli, V Gibson,W R Gibson,D M Gingrich, D Glenzinski,Jack Goldberg,M J Goodrick, W Gorn,C Grandi,E E Gross,J Grunhaus,M Gruwe, C Hajdu,G G Hanson,M Hansroul,M Hapke,C K Hargrove, P A Hart,C Hartmann,M Hauschild, C M Hawkes,Richard John Hawkings,R J Hemingway,M Herndon, G Herten,R D Heuer,M D Hildreth, J C Hill, S J Hillier,T Hilse,P R Hobson,R J Homer,A K Honma,D Horvath,R E Howard,R E Hughesjones,D E Hutchcroft,P Igokemenes,D C Imrie,M R Ingram,K Ishii, A Jawahery,P W Jeffreys, H Jeremie, M Jimack,Alan G Joly,C R Jones, G Jones, M G Jones,R W L Jones,U Jost, P Jovanovic, T R Junk,D Karlen,K Kawagoe, T Kawamoto,R Keeler,R G Kellogg, B W Kennedy,B J King,John G Kirk,S Kluth,T Kobayashi,M Kobel,D S Koetke, T P Kokott,M Kolrep, S Komamiya,Thomas Kress,P Krieger,J Von Krogh,P Kyberd,G D Lafferty,R Lahmann,W P Lai, D Lanske,J Lauber,S R Lautenschlager,J G Layter, D Lazic,A M Lee,Elisabeth Lefebvre, D Lellouch, J Letts,L Levinson,Cathryn M Lewis,S L Lloyd,F K Loebinger,G D Long, M J Losty, J Ludwig, M Mannelli, S Marcellini,C Markus, A Martin,J P Martin, Gary V Martinez, T Mashimo,W Matthews, P Mattig,W J Mcdonald,J A Mckenna,E A Mckigney,T J Mcmahon,A Mcnab,R A Mcpherson, F Meijers, S Menke, F S Merritt,H Mes,J Meyer,A Michelini, G Mikenberg, D J Miller,R Mir, W Mohr,A Montanari,T Mori,M Morii,U Muller, K Nagai,I Nakamura, H A Neal,B Nellen,B Nijjhar, R Nisius, S W Oneale,F G Oakham, F Odorici, H Ogren,N J Oldershaw,T Omori,M J Oreglia,S Orito,J Palinkas,G Pasztor, J R Pater,G N Patrick,J Patt,M J Pearce,S Petzold,P Pfeifenschneider, J E Pilcher, J L Pinfold,D E Plane,P Poffenberger,B Poli,A Posthaus,H Przysiezniak, D L Rees, D Rigby,S H Robertson,S A Robins,N Rodning,J M Roney,A Rooke,E Ros, A M Rossi,M Rosvick, P Routenburg, Y Rozen, K Runge, O Runolfsson,U Ruppel,D R Rust,R Rylko,K Sachs, E K G Sarkisyan,Masahiro Sasaki,C Sbarra,A D Schaile,O Schaile,F Scharf,P Scharffhansen,P Schenk,B Schmitt,S Schmitt,M Schroder, H C Schultzcoulon,Michael Schulz,Martin Schumacher,P Schutz, W G Scott,T Shears, B C Shen, C H Shepherdthemistocleous, P Sherwood, G P Siroli,A Sittler,A Skillman, A Skuja,A M Smith,Thomas J Smith,G A Snow, R Sobie,S Soldnerrembold,R W Springer,M Sproston,Achim Stahl,M Steiert,K Stephens,J Steuerer,B Stockhausen,D Strom,F Strumia,P Szymanski,R Tafirout,S D Talbot,Satoru Tanaka,P Taras,S Tarem,M Thiergen,Mark Thomson,E Von Torne,S Towers,Isabel Marian Trigger, T Tsukamoto,E Tsur,A S Turcot,M F Turnerwatson,P Utzat,R Van Kooten,M Verzocchi,P Vikas,M G Vincter,E H Vokurka,F Wackerle, A Wagner, C P Ward, D R Ward,J J Ward,P M Watkins, A T Watson, N K Watson, P S Wells, N Wermes,J S White,B Wilkens,G W Wilson, J A Wilson,G Wolf,S A Wotton, T R Wyatt,Shizuya Yamashita,G Yekutieli,V Zacek

PHYSICS LETTERS B（1997）

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摘要

A search for pair-produced scalar electron, muon and tau leptons has been performed using a data sample corresponding to an integrated luminosity of 10.1 pb(-1) at a centre-of-mass energy of root s=161 GeV collected with the OPAL detector at LEP Such events would yield an acoplanar pair of leptons with significant missing energy in the final state. No excess of acoplanar lepton pair events has been observed in the data. Limits are presented on the production cross-sections of charged scalar leptons. Exclusion regions are also presented in the framework of the Minimal Supersymmetric Standard Model A 95% C.L. lower limit on the right-handed selectron mass of 71.5 GeV is obtained for tan beta greater than or equal to 1.5, \mu\ greater than or equal to 200 GeV and m(chi 1)(0) = 12.0 GeV, A 95% C.L. lower limit on the right-handed smuon mass of 51.0 GeV is obtained for m(<(chi)over tilde (1)>)(0) = 12.0 GeV, independent of tan beta and mu. (C) 1997 Elsevier Science B.V.

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关键词

cross section,minimal supersymmetric standard model,centre of mass

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