Published September 27, 1990
| Version v1
Journal article
A direct search for neutralino production at LEP
Creators
- Akrawy, M.Z.
- Alexander, G.
- Allison, J.
- Allport, P.P.
- Anderson, K.J.
- Armitage, J.C.
- Arnison, G.T.J.
- Ashton, P.
- Azuelos, G.
- Baines, J.T.M.
- Ball, A.H.
- Banks, J.
- Barker, G.J.
- Barlow, R.J.
- Batley, J.R.
- Becker, J.
- Behnke, T.
- Bell, K.W.
- Bella, G.
- Bethke, S.
- Biebel, O.
- Binder, U.
- Bloodworth, I.J.
- Bock, P.
- Breuker, H.
- Brown, R.M.
- Brun, R.
- Buijs, A.
- Burckhart, H.J.
- Capiluppi, P.
- Carnegie, R.K.
- Carter, A.A.
- Carter, J.R.
- Chang, C.Y.
- Charlton, D.G.
- Chrin, J.T.M.
- Clarke, P.E.L.
- Cohen, I.
- Collins, W.J.
- Conboy, J.E.
- Couch, M.
- Coupland, M.
- Cuffiani, M.
- Dado, S.
- Dallavalle, G.M.
- Debu, P.
- Deninno, M.M.
- Dieckmann, A.
- Dittmar, M.
- Dixit, M.S.
- Duchovni, E.
- Duerdoth, I.P.
- Dumas, D.J.P.
- El Mamouni, H.
- Elcombe, P.A.
- Estabrooks, P.G.
- Etzion, E.
- Fabbri, F.
- Farthouat, P.
- Fischer, H.M.
- Fong, D.G.
- French, M.T.
- Fukunaga, C.
- Gaidot, A.
- Ganel, O.
- Gary, J.W.
- Gascon, J.
- Geddes, N.I.
- Gee, C.N.P.
- Geich-Gimbel, C.
- Gensler, S.W.
- Gentit, F.X.
- Giacomelli, G.
- Gibson, V.
- Gibson, W.R.
- Gillies, J.D.
- Goldberg, J.
- Goodrick, M.J.
- Gorn, W.
- Granite, D.
- Gross, E.
- Grunhaus, J.
- Hagedorn, H.
- Hagemann, J.
- Hansroul, M.
- Hargrove, C.K.
- Harrus, I.
- Hart, J.
- Hattersley, P.M.
- Hauschild, M.
- Hawkes, C.M.
- Heflin, E.
- Hemingway, R.J.
- Heuer, R.D.
- Hill, J.C.
- Hillier, S.J.
- Ho, C.
- Hobbs, J.D.
- Hobson, P.R.
- Hochman, D.
- Holl, B.
- Homer, R.J.
- Hou, S.R.
- Howarth, C.P.
- Humbert, R.
- Hughes-Jones, R.E.
- Igo-Kemenes, P.
- Ihssen, H.
- Imrie, D.C.
- Jawahery, A.
- Jeffreys, P.W.
- Jeremie, H.
- Jimack, M.
- Jobes, M.
- Jones, R.W.L.
- Jovanovic, P.
- Karlen, D.
- Kawagoe, K.
- Kawamoto, T.
- Kellogg, R.G.
- Kennedy, B.W.
- Kleinwort, C.
- Klem, D.E.
- Knop, G.
- Kobayashi, T.
- Kokott, T.P.
- Koepke, L.
- Kowalewski, R.
- Kreutzmann, H.
- Kroll, J.
- Kuwano, M.
- Kyberd, P.
- Lafferty, G.D.
- Lamarche, F.
- Larson, W.J.
- Layter, J.G.
- Le Du, P.
- Leblanc, P.
- Lee, A.M.
- Lehto, M.H.
- Lellouch, D.
- Lennert, P.
- Lessard, L.
- Levinson, L.
- Lloyd, S.L.
- Loebinger, F.K.
- Lorah, J.M.
- Lorazo, B.
- Losty, M.J.
- Ludwig, J.
- Ma, J.
- Macbeth, A.A.
- Mannelli, M.
- Marcellini, S.
- Maringer, G.
- Martin, A.J.
- Martin, J.P.
- Mashimo, T.
- Maettig, P.
- Maur, U.
- McMahon, T.J.
- McNutt, J.R.
- McPherson, A.C.
- Meijers, F.
- Menszner, D.
- Merritt, F.S.
- Mes, H.
- Michelini, A.
- Middleton, R.P.
- Mikenberg, G.
- Miller, D.J.
- Milstene, C.
- Minowa, M.
- Mohr, W.
- Montanari, A.
- Mori, T.
- Moss, M.W.
- Murphy, P.G.
- Murray, W.J.
- Nellen, B.
- Nguyen, H.H.
- Nozaki, M.
- O'Dowd, A.J.P.
- O'Neale, S.W.
- O'Neill, B.P.
- Oakham, F.G.
- Odorici, F.
- Ogg, M.
- Oh, H.
- Oreglia, M.J.
- Orito, S.
- Pansart, J.P.
- Patrick, G.N.
- Pawley, S.J.
- Pfister, P.
- Pilcher, J.E.
- Pinfold, J.L.
- Plane, D.E.
- Poli, B.
- Pouladdej, A.
- Pritchard, T.W.
- Quast, G.
- OPAL Collaboration
Description
A search has been performed for the production of neutralinos (χ,χ') in e+e- annihilation at energies near the Z0 pole. No evidence for these particles was found either in searches for events with two acoplanar jets, low visible energy, and missing pt (sensitive to Z0→χχ'→χχfanti f) or in searches for single-photon events (sensitive to Z0→χχ'→χχγ). Model independent upper limits (at the 95% CL) on the branching ratio for the decay mode Z0→χχ' of a few 10-4 are obtained for most of the range of neutralino masses that is kinematically accessible at LEP energies. Upper limits on the mixing factor of neutralinos are also placed as a function of the neutralino masses. (orig.)
Additional details
Publishing Information
- Journal Title
- Physics Letters, (Section) B
- Journal Volume
- 248
- Journal Issue
- 1/2
- Series
- Phys. Lett., B.
- Journal Page Range
- 211-219
- ISSN
- 0370-2693
- CODEN
- PYLBA
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 22007223
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANGULAR CORRELATION; ANNIHILATION; BRANCHING RATIO; CONFIGURATION MIXING; ELECTRON-POSITRON INTERACTIONS; ENERGY SPECTRA; EXPERIMENTAL DATA; GEV RANGE 10-100; HADRONS; JET MODEL; LIMITING VALUES; MIXING RATIO; MULTIPLE PRODUCTION; NEUTRAL PARTICLES; NEUTRAL-CURRENT INTERACTIONS; PHOTONS; RADIATIVE DECAY; REST MASS; SPARTICLES; SUPERSYMMETRY; TRANSVERSE MOMENTUM; WEAK PARTICLE DECAY; Z NEUTRAL BOSONS
- Descriptors DEC
- BOSONS; CORRELATIONS; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; INFORMATION; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; LEPTON-LEPTON INTERACTIONS; LINEAR MOMENTUM; MASS; MASSLESS PARTICLES; MATHEMATICAL MODELS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; POSTULATED PARTICLES; SPECTRA; SYMMETRY
Optional Information
- Collaborations
- OPAL Collaboration.