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Search for Chargino-Neutralino Associated Production at the Fermilab Tevatron Collider

Description/Abstract

We have searched in p{bar p} collisions at {radical}(s) =1.8 TeV for events with three charged leptons and missing transverse energy. In the minimal supersymmetric standard model, we expect trilepton events from chargino-neutralino ({tilde {chi}}{sup {plus_minus}}{sub 1}{tilde {chi}}{sup 0}{sub 2}) pair production, with subsequent decay into leptons. We observe no candidate e{sup +}e{sup {minus}}e{sup {plus_minus}}, e{sup +}e{sup {minus}}{mu}{sup {plus_minus}}, e{sup {plus_minus}}{mu}{sup +}{mu}{sup {minus}}, or {mu}{sup +}{mu}{sup {minus}}{mu}{sup {plus_minus} } events in 106 pb{sup {minus}1} integrated luminosity. We present limits on the sum of the branching ratios times cross section for the four channels: {sigma}{sub {tilde {chi}}{sup {plus_minus}}{sub 1}{tilde {chi}}{sup 0 }{sub 2}}B({tilde {chi}}{sup {plus_minus}}{sub 1}{tilde {chi}}{sup 0}{sub 2}{r_arrow}3{ell}+X){lt}0.34 pb , M{sub {tilde {chi}}{sup {plus_minus}}{sub 1}}{gt}81.5 GeV/c{sup 2} , and M{sub {tilde {chi}}{sup 0}{sub 2 }}{gt}82.2 GeV /c{sup 2} for tan{beta}=2 , {mu}={minus}600 GeV/c{sup 2} , and M{sub {tilde q}}=M{sub {tilde g} } . {copyright} {ital 1998} {ital The American Physical Society}

Authors: Blair, R.E.; Byrum, K.L.; Kovacs, E.; Kuhlmann, S.E.; LeCompte, T.; Nodulman, L. [Argonne National Laboratory, Argonne, Illinois 60439 (United States)]; Breccia, L.; Brunetti, R.; Deninno, M.; Fiori, I.; Mazzanti, P. [Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna (Italy)]; Behrends, S.; Bensinger, J.; Blocker, C.; Kirsch, L.; Lamoureux, J.I. [Brandeis University, Waltham, Massachusetts 02254 (United States)]; Bonushkin, Y.; Hauser, J.; Lindgren, M. [University of California at Los Angeles, Los Angeles, California 90024 (United States)]; Amadon, A.; Berryhill, J.; Contreras, M.; Culbertson, R.; Frisch, H.; Grosso-Pilcher, C.; Hohlmann, M. [University of Chicago, Chicago, Illinois 60637 (United States)]; Cronin-Hennessy, D.; Dittmann, J.R.; Goshaw, A.T.; Khazins, D.; Kowald, W.; Oh, S.H. [Duke University, Durham, North Carolina 27708 (United States)]; Albrow, M.G.; Atac, M.; Beretvas, A.; Berge, J.P.; Biery, K.; Binkley, M.; Buckley-Geer, E.; Byon-Wagner, A.; Chlebana, F.; Cihangir, S.; Cooper, J.; DeJongh, F.; Demina, R.; Derwent, P.F.; Elias, J.E.; Erdmann, W.; Flaugher, B.; Foster, G.W.; Freeman, J.; Geer, S.; Hahn, S.R.; Harris, R.M.; Incandela, J.; Jensen, H.; Joshi, U.; Kennedy, R.D.; Kephart, R.; Lammel, S.; Lewis, J.D.; Limon, P.; Lukens, P.; Maeshima, K.; Marriner, J.P.; Miao, T.; Mukherjee, A.; Nelson, C.; Newman-Holmes, C.; Patrick, J. [Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)]; Klimenko, S.; Konigsberg, J.; Korytov, A.; Nomerotski, A. [University of Florida, Gainesville, Florida 32611 (United States)]; Barone, M.; Bertolucci, S.; Cordelli, M.; DellAgnello, S.; Giromini, P.; Happacher, F.; Miscetti, S.; Parri, A. [Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati (Italy)]; Clark, A.G.; Couyoumtzelis, C.; Kambara, H. [University of Geneva, CH-1211 Geneva 4 (Switzerland)]; Baumann, T.; Franklin, M.; Gordon, A.; Hamilton, R.; Huth, J.; and others
Publication Date:1998 Jun 01
OSTI Identifier: 656280
Resource Type:Journal Article
Resource Relation:Journal Name: Physical Review Letters; Journal Volume: 80; Journal Issue: 24; Other Information: PBD: Jun 1998
Country of Publication:United States
Language:English
Format: Size: pp. 5275-5280
Other Number(s):Journal ID: PRLTAO; ISSN 0031-9007; TRN: 98:010163
Subject:66 PHYSICS; PROTON-ANTIPROTON INTERACTIONS; TEV RANGE; LEPTONS; CHARGED PARTICLES; TRANSVERSE ENERGY; SUPERSYMMETRY; STANDARD MODEL; NEUTRAL PARTICLES; SPARTICLES; PAIR PRODUCTION; BRANCHING RATIO; CROSS SECTIONS; LUMINOSITY; FERMILAB TEVATRON
Update Date:2009 Dec 16

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