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.
Settore BIO/09 - Fisiologia
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/179995
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