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

Journal Article · Mon Jun 01 00:00:00 EDT 1998 · Physical Review Letters

OSTI ID:656280

Blair, R E; Byrum, K L; Kovacs, E; Kuhlmann, S E; LeCompte, T; Nodulman, L ^[1]; Breccia, L; Brunetti, R; Deninno, M; Fiori, I; Mazzanti, P ^[2]; Behrends, S; Bensinger, J; Blocker, C; Kirsch, L; Lamoureux, J I ^[3]; Bonushkin, Y; Hauser, J; Lindgren, M ^[4]; Amadon, A ; Berryhill, J; Contreras, M; Culbertson, R; Frisch, H; Grosso-Pilcher, C; Hohlmann, M ^[5]; Cronin-Hennessy, D; Dittmann, J R; Goshaw, A T; Khazins, D; Kowald, W; Oh, S H ^[6]; 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 ^[7]; Klimenko, S; Konigsberg, J; Korytov, A; Nomerotski, A ^[8]; Barone, M; Bertolucci, S; Cordelli, M; DellAgnello, S; Giromini, P; Happacher, F; Miscetti, S; Parri, A ^[9]; Clark, A G; Couyoumtzelis, C; Kambara, H ^[10]; Baumann, T; Franklin, M; Gordon, A; Hamilton, R; Huth, J; others, and

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1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna (Italy)
3. Brandeis University, Waltham, Massachusetts 02254 (United States)
4. University of California at Los Angeles, Los Angeles, California 90024 (United States)
5. University of Chicago, Chicago, Illinois 60637 (United States)
6. Duke University, Durham, North Carolina 27708 (United States)
7. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
8. University of Florida, Gainesville, Florida 32611 (United States)
9. Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati (Italy)
10. University of Geneva, CH-1211 Geneva 4 (Switzerland)

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}

• OSTI ID: 656280
• Journal Information: Physical Review Letters, Vol. 80, Issue 24; Other Information: PBD: Jun 1998
• Country of Publication: United States
• Language: English

Related Subjects

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