Search For Squarks And Gluinos Via Radiative Decays Of Neutralinos In Proton-Antiproton Collisions At Root-S=1.8 Tev

F. Abe,M. Albrow, D. Amidei,C. Anway-Wiese, G. Apollinari,M. Atac,P. Auchincloss,P. Azzi,N. Bacchetta,A. Baden,W. Badgett,M. Bailey,A. Bamberger,P. de Barbaro, A. Barbaro-Galtieri,V. Barnes,B. Barnett,P. Bartalini,G. Bauer,T. Baumann,F. Bedeschi,S. Behrends, S. Belforte, G. Bellettini, J. Bellinger,D. Benjamin,J. Benlloch,J. Bensinger, A. Beretvas,J. Berge,S. Bertolucci,K. Biery,S. Bhadra,M. Binkley, D. Bisello,R Blair,C. Blocker,A. Bodek,V. Bolognesi,A. Booth,C. Boswell,G. Brandenburg,D. Brown,E. Buckley-Geer,H. Budd,G. Busetto,A. Byon-Wagner,K. Byrum,C. Campagnari,M. Campbell,A. Caner,R. Carey,W. Carithers, D. Carlsmith,J. Carroll,R. Cashmore,A. Castro,Y. Cen,F. Cervelli,K. Chadwick,J. Chapman,G. Chiarelli,W. Chinowsky, S. Cihangir,A. Clark,M. Cobal,D. Connor, M. Contreras,J. Cooper,M. Cordelli,D. Crane,J. Cunningham,C. Day,F. DeJongh,S. Dell'Agnello,M. Dell'Orso,L. Demortier,B. Denby,P. Derwent,T. Devlin,M. Dickson,S. Donati,R. Drucker,A. Dunn, K. Einsweiler,J. Elias,R. Ely, S. Eno, S. Errede,A. Etchegoyen,B. Farhat,M. Frautschi, G. Feldman,B. Flaugher,G. Foster,M. Franklin,J. Freeman,H. Frisch,T. Fuess,Y. Fukui,G. Gagliardi, A. Garfinkel,A. Gauthier,S. Geer, D. Gerdes, P. Giannetti, N. Giokaris,P. Giromini, L. Gladney,M. Gold,J. Gonzalez, K. Goulianos, H. Grassmann,G. Grieco,R. Grindley,C. Grosso-Pilcher, C. Haber,S. Hahn,R. Handler, K. Hara,B. Harral,R. Harris,S. Hauger,J. Hauser,C. Hawk,T. Hessing, R. Hollebeek,L. Holloway,A. Hölscher,S. Hong,G. Houk,P. Hu,B. Hubbard,B. Huffman, R. Hughes,P. Hurst,J. Huth,J. Hylen,M. Incagli,T. Ino,H. Iso,H. Jensen,C. Jessop,R. Johnson, U. Joshi,R. Kadel, T. Kamon,S. Kanda,D. Kardelis,I. Karliner,E. Kearns,L. Keeble,R. Kephart,P. Kesten, R. Keup,H. Keutelian,D. Kim, S. Kim,Y. Kim, L. Kirsch,K. Kondo,J. Konigsberg, K. Kordas,E. Kovacs,M. Krasberg, S. Kuhlmann,E. Kuns,A. Laasanen,S. Lammel,J. Lamoureux,S. Leone, J. Lewis, W. Li, P. Limon,M. Lindgren, T. Liss,N. Lockyer,M. Loreti,E. Low,D. Lucchesi,C. Luchini,P. Lukens,P. Maas, K. Maeshima,M. Mangano,J. Marriner,M. Mariotti, R. Markeloff,L. Markosky,J. Matthews,R. Mattingly,P. McIntyre, A. Menzione,E. Meschi,T. Meyer,S. Mikamo, M. Miller,T. Mimashi,S. Miscetti,M. Mishina,S. Miyashita,Y. Morita,S. Moulding,J. Mueller,A. Mukherjee,T. Muller,L. Nakae, I. Nakano, C. Nelson,D. Neuberger, C. Newman-Holmes,J. Ng,M. Ninomiya, L. Nodulman,S. Ogawa,C. Pagliarone, R. Paoletti,V. Papadimitriou,A. Para,E. Pare,S. Park,J. Patrick, G. Pauletta,L. Pescara,T. Phillips,A. Piacentino,R. Plunkett,L. Pondrom,J. Proudfoot,F. Ptohos,G. Punzi,D. Quarrie,K. Ragan, G. Redlinger,J. Rhoades,M. Roach,F. Rimondi,L. Ristori,W. Robertson, T. Rodrigo,T. Rohaly,A. Roodman, W. Sakumoto, A. Sansoni,R. Sard, A. Savoy-Navarro,V. Scarpine,P. Schlabach,E. Schmidt,O. Schneider,M. Schub, R. Schwitters,G. Sciacca, A. Scribano,S. Segler, S. Seidel, Y. Seiya,G. Sganos, M. Shapiro, N. Shaw,M. Sheaff, M. Shochet, J. Siegrist,A. Sill,P. Sinervo,J. Skarha, K. Sliwa,D. Smith,F. Snider,L. Song,T. Song, M. Spahn,P. Sphicas,A. Spies,R. St. Denis,L. Stanco,A. Stefanini,G. Sullivan, K. Sumorok,R. Swartz, Jr.,M. Takano,K. Takikawa, S. Tarem,F. Tartarelli,S. Tether,D. Theriot,M. Timko,P. Tipton, S. Tkaczyk,A. Tollestrup,J. Tonnison, W. Trischuk,Y. Tsay,J. Tseng,N. Turini, F. Ukegawa,D. Underwood,S. Vejcik III,R. Vidal,R. Wagner,N. Wainer,R. Walker,J. Walsh,A. Warburton, G. Watts,T. Watts,R. Webb, C. Wendt,H. Wenzel,W. Wester III,T. Westhusing,S. White, A. Wicklund, E. Wicklund,H. Williams,B. Winer,J. Wolinski,D. Wu,X. Wu,J. Wyss,A. Yagil, W. Yao,K. Yasuoka,Y. Ye,G. Yeh, J. Yoh,M. Yokoyama,J. Yun, A. Zanetti,F. Zetti,S. Zhang,W. Zhang,S. Zucchelli

PHYSICAL REVIEW LETTERS（1995）

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摘要

We have sought evidence for radiative decays of neutralinos produced in proton-antiproton collisions at root s = 1.8 TeV. Events containing two photons plus large missing transverse energy were investigated. The observed event rate and the missing transverse energy distribution of the two-photon events are consistent with QCD predictions. Inferred limits on squark and gluino masses depend on the supersymmetry model parameters. The particular choices mu = -40 GeV/c(2) and tan beta = 1.5 lead to 90%-confidence-level asymptotic lower limits of 110 GeV/c(2) and 140 GeV/c(2) for squarks and gluinos, respectively.

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关键词

Gluino,Antiproton,Superpartner,Energy (signal processing),Gluon,Quantum chromodynamics,Particle identification,Supersymmetry,Particle physics,Nuclear physics,Physics

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