A search for supersymmetric decays of the Z boson into a pair of scalar electrons or winos (partners of the electron and W boson) has been made with the upgraded UA2 experiment at the CERN pp collider at s = 630 GeV. The analysis of the sample of electron pairs, corresponding to an integrated luminosity of 7.4 pb-1, shows no evidence for such exotic decays. The 90% confidence level lower mass limits obtained exclude selectron masses up to e40 GeV/c2 in the case of a light photino, and wino masses up to 45 GeV/c2 in the case of a light scalar neutrino.

SEARCH FOR SCALAR ELECTRONS AND WINOS AT THE CERN PBARP COLLIDER / T. AKESSON, J. ALITTI, R. ANSARI, R. ANSORGE, P. BAGNAIA, P. BAREYRE, G. BLAYLOCK, P. BONAMY, M. BONESINI, K. BORER, D. BUSKULIC, G. CARBONI, D. CAVALLI, V. CAVASINNI, P. CENCI, J. CHOLLET, C. CONTA, G. COSTA, F. COSTANTINI, A. DELLACQUA, B. DELOTTO, T. DELPRETE, R. DEWOLF, L. DILELLA, G. EGAN, K. EINSWEILER, L. FAYARD, A. FEDERSPIEL, R. FERRARI, M. FRATERNALI, D. FROIDEVAUX, G. FUMAGALLI, J. GAILLARD, F. GIANOTTI, O. GILDEMEISTER, C. GOSSLING, V. GOGGI, S. GRUNENDAHL, K. HARA, S. HELLMAN, E. HUGENTOBLER, K. HULTQVIST, E. IACOPINI, J. INCANDELA, K. JAKOBS, P. JENNI, E. KLUGE, T. KOCH, N. KURZ, S. LAMI, P. LARICCIA, M. LEFEBVRE, L. LINSSEN, M. LIVAN, P. LUBRANO, C. MAGNEVILLE, L. MANDELLI, L. MAPELLI, M. MAZZANTI, K. MEIER, B. MERKEL, J. MEYER, M. MONIEZ, R. MONING, M. MORGANTI, L. MULLER, D. MUNDAY, C. ONIONS, T. PAL, M. PARKER, G. PARROUR, F. PASTORE, E. PENNACCHIO, J. PENTNEY, M. PEPE, L. PERINI, C. PETRIDOU, P. PETROFF, F. PIROVANO, H. PLOTHOWBESCH, G. POLESELLO, A. POPPLETON, M. PRIMAVERA, L. RASMUSSEN, J. REPELLIN, A. RIMOLDI, J. RUSHBROOKE, P. SCAMPOLI, J. SCHACHER, S. SINGH, S. STAPNES, A. STIRLING, S. TOVEY, M. VALDATANAPPI, V. VERCESI, G. VOLPINI, A. WEIDBERG, P. WELLS, T. WHITE, D. WOOD, S. WOTTON, H. ZACCONE. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 238:2-4(1990), pp. 442-450.

SEARCH FOR SCALAR ELECTRONS AND WINOS AT THE CERN PBARP COLLIDER

L. PERINI;
1990

Abstract

A search for supersymmetric decays of the Z boson into a pair of scalar electrons or winos (partners of the electron and W boson) has been made with the upgraded UA2 experiment at the CERN pp collider at s = 630 GeV. The analysis of the sample of electron pairs, corresponding to an integrated luminosity of 7.4 pb-1, shows no evidence for such exotic decays. The 90% confidence level lower mass limits obtained exclude selectron masses up to e40 GeV/c2 in the case of a light photino, and wino masses up to 45 GeV/c2 in the case of a light scalar neutrino.
Settore FIS/04 - Fisica Nucleare e Subnucleare
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/179993
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