Experimental Search For Chargino And Neutralino Production In Supersymmetry Models With A Light Gravitino

B. Abbott, M. Abolins,B. Acharya,I. Adam,D. Adams, M. Adams,S. Ahn,H. Aihara,G. Alves,E. Amidi,N. Amos,E. Anderson,R. Astur,M. Baarmand, A. Baden,V. Balamurali,J. Balderston, B. Baldin, S. Banerjee,J. Bantly,J. Bartlett,K. Bazizi,A. Belyaev,S. Beri,I. Bertram,V. Bezzubov,P. Bhat,V. Bhatnagar, M. Bhattacharjee,N. Biswas,G. Blazey,S. Blessing,P. Bloom,A. Boehnlein,N. Bojko,F. Borcherding,C. Boswell,A. Brandt,R. Brock, A. Bross, D. Buchholz,V. Burtovoi,J. Butler,W. Carvalho,D. Casey,Z. Casilum,H. Castilla-Valdez,D. Chakraborty,S.-M. Chang,S. Chekulaev,L.-P. Chen, W. Chen,S. Choi,S. Chopra,B. Choudhary,J. Christenson,M. Chung, D. Claes,A. Clark,W. Cobau, J. Cochran,W. Cooper,C. Cretsinger,D. Cullen-Vidal,M. Cummings, D. Cutts,O. Dahl,K. Davis,K. De,K. Del Signore,M. Demarteau,D. Denisov,S. Denisov,H. Diehl, M. Diesburg,G. Di Loreto, P. Draper,Y. Ducros,L. Dudko,S. Dugad, D. Edmunds, J. Ellison,V. Elvira, R. Engelmann, S. Eno, G. Eppley,P. Ermolov,O. Eroshin,V. Evdokimov,T. Fahland, M. Fatyga,J. Featherly,S. Feher,D. Fein, T. Ferbel,G. Finocchiaro, H. Fisk,Y. Fisyak,E. Flattum,G. Forden, M. Fortner,K. Frame,S. Fuess, E. Gallas,A. Galyaev,P. Gartung,T. Geld,R. Genik,K. Genser,C. Gerber, B. Gibbard,S. Glenn, B. Gobbi,M. Goforth,A. Goldschmidt,B. Gómez,G. Gómez,P. Goncharov,J. González Solís, H. Gordon,L. Goss,K. Gounder, A. Goussiou,N. Graf,P. Grannis,D. Green,J. Green, H. Greenlee,G. Grim,S. Grinstein,N. Grossman,P. Grudberg,S. Grünendahl,G. Guglielmo,J. Guida, A. Gupta,S. Gurzhiev,P. Gutierrez,Y. Gutnikov,N. Hadley, H. Haggerty, S. Hagopian,V. Hagopian,K. Hahn,R. Hall,P. Hanlet,S. Hansen,J. Hauptman,D. Hedin,A. Heinson,U. Heintz,R. Hernández-Montoya,T. Heuring, R. Hirosky,J. Hobbs,B. Hoeneisen,J. Hoftun,F. Hsieh,Ting Hu,Tong Hu,T. Huehn,A. Ito, E. James,J. Jaques,S. Jerger,R. Jesik, J. Jiang,T. Joffe-Minor, K. Johns, M. Johnson,A. Jonckheere,M. Jones,H. Jöstlein,S. Jun,C. Jung,S. Kahn,G. Kalbfleisch,J. Kang,R. Kehoe,M. Kelly,C. Kim,S. Kim,A. Klatchko, B. Klima, C. Klopfenstein,V. Klyukhin,V. Kochetkov,J. Kohli, D. Koltick, A. Kostritskiy,J. Kotcher,A. Kotwal,J. Kourlas,A. Kozelov,E. Kozlovski,J. Krane, M. Krishnaswamy,S. Krzywdzinski, S. Kunori,S. Lami,H. Lan, R. Lander,F. Landry,G. Landsberg,B. Lauer, A. Leflat,H. Li, J. Li,Q. Li-Demarteau,J. Lima,D. Lincoln,S. Linn, J. Linnemann, R. Lipton,Q. Liu,Y. Liu, F. Lobkowicz,S. Loken,S. Lökös,L. Lueking,A. Lyon,A. Maciel,R. Madaras,R. Madden,L. Magaña-Mendoza,S. Mani,H. Mao, R. Markeloff,T. Marshall,M. Martin,K. Mauritz,B. May,A. Mayorov, R. McCarthy,J. McDonald, T. McKibben,J. McKinley,T. McMahon, H. Melanson,M. Merkin, K. Merritt, H. Miettinen,A. Mincer,C. Mishra,N. Mokhov,N. Mondal,H. Montgomery,P. Mooney,H. da Motta,C. Murphy,F. Nang,M. Narain,V. Narasimham,A. Narayanan,H. Neal,J. Negret, P. Nemethy,M. Nicola,D. Norman, L. Oesch,V. Oguri,E. Oltman, N. Oshima,D. Owen, P. Padley,M. Pang,A. Para, Y. Park,R. Partridge,N. Parua,M. Paterno,J. Perkins,M. Peters, R. Piegaia,H. Piekarz,Y. Pischalnikov, V. Podstavkov,B. Pope, H. Prosper, S. Protopopescu,J. Qian, P. Quintas,R. Raja, S. Rajagopalan,O. Ramirez,L. Rasmussen, S. Reucroft,M. Rijssenbeek,T. Rockwell,N. Roe, P. Rubinov, R. Ruchti,J. Rutherfoord,A. Sánchez-Hernández,A. Santoro,L. Sawyer,R. Schamberger,H. Schellman,J. Sculli,E. Shabalina,C. Shaffer,H. Shankar,R. Shivpuri, M. Shupe,H. Singh,J. Singh,V. Sirotenko,W. Smart,R. Smith,R. Snihur, G. Snow, J. Snow,S. Snyder,J. Solomon,P. Sood, M. Sosebee,N. Sotnikova,M. Souza,A. Spadafora,R. Stephens,M. Stevenson,D. Stewart,F. Stichelbaut,D. Stoianova,D. Stoker, M. Strauss, K. Streets,M. Strovink,A. Sznajder,P. Tamburello, J. Tarazi,M. Tartaglia, T. Thomas,J. Thompson,T. Trippe, P. Tuts, N. Varelas,E. Varnes,D. Vititoe, A. Volkov, A. Vorobiev,H. Wahl,G. Wang, J. Warchol, G. Watts, M. Wayne,H. Weerts,A. White,J. White,J. Wightman,S. Willis,S. Wimpenny,J. Wirjawan, J. Womersley,E. Won,D. Wood,H. Xu,R. Yamada,P. Yamin,C. Yanagisawa,J. Yang,T. Yasuda,P. Yepes,C. Yoshikawa,S. Youssef, J. Yu, Y. Yu,Z. Zhu, D. Zieminska,A. Zieminski,E. Zverev,A. Zylberstejn

PHYSICAL REVIEW LETTERS(1998)

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摘要
We search for inclusive high E-T diphoton events with large missing transverse energy in p (p) over bar collisions at root s = 1.8 TeV. Such events are expected from pair production of charginos and neutralinos within the framework of the minimal supersymmetric standard model with a light gravitino. No excess of events is observed. In that model, and assuming gaugino mass unification at the GUT scale, we obtain a 95% C.L. exclusion region in the supersymmetry parameter space and lower mass bounds of 150 GeV/c(2) for the lightest chargino and 77 GeV/c(2) for the lightest neutralino.
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elementary particles
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