A search has been made for scalar leptoquark pair production with the upgraded UA2 detector at the CERN ppBAR Coolider at square-root s = 630 GeV, investigating decays of the leptoquark into a quark and either an electron or an electron neutrino. From an event sample corresponding to an integrated luminosity of 13 pb-1 a lower limit has been determined for the mass of first generation leptoquarks, yielding 67 GeV (95% CL) for a scalar leptoquark decaying with a 50% branching ratio into a quark and an electron.
A SEARCH FOR SCALAR LEPTOQUARKS AT THE CERN PBARP COLLIDER / J. Alitti, G. Ambrosini, R. Ansari, D. Autiero, P. Bareyre, I. Bertram, G. Blaylock, P. Bonamy, K. Borer, M. Bourliaud, D. Buskulic, G. Carboni, D. Cavalli, V. Cavasinni, P. Cenci, J. Chollet, C. Conta, G. Costa, F. Costantini, L. Cozzi, A. Cravero, M. Curatolo, A. Dellacqua, T. Delprete, R. Dewolf, L. Dilella, Y. Ducros, G. Egan, K. Einsweiler, B. Esposito, 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, J. Hrivnac, H. Hufnagel, E. Hugentobler, K. Hultqvist, E. Iacopini, J. Incandela, K. Jakobs, P. Jenni, E. Kluge, 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, M. Nessi, F. Nessitedaldi, C. Onions, T. Pal, M. Parker, G. Parrour, F. Pastore, E. Pennacchio, J. Pentney, M. Pepe, L. Perini, C. Petridou, P. Petroff, H. Plothowbesch, G. Polesello, A. Poppleton, K. Pretzl, M. Primavera, M. Punturo, J. Repellin, A. Rimoldi, M. Sacchi, P. Scampoli, J. Schacher, B. Schmidt, V. Simak, S. Singh, V. Sondermann, R. Spiwoks, S. Stapnes, C. Talamonti, F. Tondini, S. Tovey, E. Tsesmelis, G. Unal, M. Valdatanappi, V. Vercesi, A. Weidberg, P. Wells, T. White, D. Wood, S. Wotton, H. Zaccone, A. Zylberstejn. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 274:3-4(1992), pp. 507-512. [10.1016/0370-2693(92)92024-B]
A SEARCH FOR SCALAR LEPTOQUARKS AT THE CERN PBARP COLLIDER
L. Perini;
1992
Abstract
A search has been made for scalar leptoquark pair production with the upgraded UA2 detector at the CERN ppBAR Coolider at square-root s = 630 GeV, investigating decays of the leptoquark into a quark and either an electron or an electron neutrino. From an event sample corresponding to an integrated luminosity of 13 pb-1 a lower limit has been determined for the mass of first generation leptoquarks, yielding 67 GeV (95% CL) for a scalar leptoquark decaying with a 50% branching ratio into a quark and an electron.
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