A search has been made with the upgraded UA2 experiment at the CERN pp Collider at s=630 GeV for multi-jet events with large transverse momentum imbalance in a data sample corresponding to an integrated luminosity of 7.4 pb-1. Under the assumption that the photino is the lightest stable supersymmetric (SUSY) particle, the data have been used to deduce lower limits in a minimal SUSY model for the squark (mq) and the gluino (mg) masses. The 90% CL bounds are mg> 74 GeV independent of mg, mg> 79 GeV independent of mg, and and m> 106 GeV for mq=mq=m.
A search for squark and gluino production at the cern pbarp collider / 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, R. Geiges, F. Gianotti, O. Gildemeister, C. Gossling, V. Goggi, S. Grunendahl, J. Hansen, 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, L. Rasmussen, J. Repellin, A. Rimoldi, 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. - 235:3/4(1990), pp. 363-372.
A search for squark and gluino production at the cern pbarp collider
L. Perini;
1990
Abstract
A search has been made with the upgraded UA2 experiment at the CERN pp Collider at s=630 GeV for multi-jet events with large transverse momentum imbalance in a data sample corresponding to an integrated luminosity of 7.4 pb-1. Under the assumption that the photino is the lightest stable supersymmetric (SUSY) particle, the data have been used to deduce lower limits in a minimal SUSY model for the squark (mq) and the gluino (mg) masses. The 90% CL bounds are mg> 74 GeV independent of mg, mg> 79 GeV independent of mg, and and m> 106 GeV for mq=mq=m.
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