A search for scalar leptoquarks at the CERN pp collider

Physics Letters B 274:3-4 (1992) 507-512

Authors:

J Alitti, G Ambrosini, R Ansari, D Autiero, P Bareyre, IA Bertram, G Blaylock, P Bonamy, K Borer, M Bourliaud, D Buskulic, G Carboni, D Cavalli, V Cavasinni, P Cenci, JC Chollet, C Conta, G Costa, F Costantini, L Cozzi, A Cravero, M Curatolo, A Dell'Acqua, T DelPrete, RS DeWolf, L DiLella, Y Ducros, GF Egan, KF Einsweiler, B Esposito, L Fayard, A Federspiel, R Ferrari, M Fraternali, D Froidevaux, G Fumagalli, JM Gaillard, F Gianotti, O Gildemeister, C Gössling, VG Goggi, S Grünendahl, K Hara, S Hellman, J Hřivnáč, H Hufnagel, E Hugentobler, K Hultqvist, E Iacopini, J Incandela, K Jakobs, P Jenni, EE 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, JP Meyer, M Moniez, R Moning, M Morganti, L Müller, DJ Munday, M Nessi, F Nessi-Tedaldi, C Onions, T Pal, MA Parker, G Parrour, F Pastore, E Pennacchio, JM Pentney, M Peper, L Perini, C Petridou, P Petroff, H Plothow-Besch, G Polesello, A Poppleton, K Pretzl, M Primavera, M Punturo, JP Repellin, A Rimoldi, M Sacchi, P Scampoli, J Schacher, B Schmidt, V Šimák, SL Singh, V Sondermann

Abstract:

A search has been made for scalar leptoquark pair production with the upgraded UA2 detector at the CERN pp Collider at √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. © 1992.

Inclusive and exclusive decays of B mesons to final states including charm and charmonium mesons

Physical Review D American Physical Society (APS) 45:1 (1992) 21-35

Authors:

D Bortoletto, DN Brown, J Dominick, RL McIlwain, DH Miller, M Modesitt, EI Shibata, S Schaffner, IPJ Shipsey, M Battle, H Kroha, K Sparks, EH Thorndike, C-H Wang, M Goldberg, T Haupt, N Horwitz, V Jain, GC Moneti, Y Rozen, P Rubin, T Skwarnicki, V Sharma, S Stone, M Thusalidas, W-M Yao, G Zhu, AV Barnes, J Bartelt, SE Csorna, T Letson, MD Mestayer, J Alexander, M Artuso, C Bebek, K Berkelman, D Besson, TE Browder, DG Cassel, E Cheu, DM Coffman, PS Drell, R Ehrlich, RS Galik, M Garcia-Sciveres, B Geiser, B Gittelman, SW Gray, AM Halling, DL Hartill, BK Heltsley, K Honscheid, J Kandaswamy, N Katayama, DL Kreinick, JD Lewis, GS Ludwig, J Masui, J Mevissen, NB Mistry, S Nandi, CR Ng, E Nordberg, C O'Grady, D Peterson, M Pisharody, D Riley, M Sapper, M Selen, A Silverman, H Worden, M Worris, P Avery, A Freyberger, L Garren, J Rodriguez, J Yelton, K Kinoshita, F Pipkin, M Procario, R Wilson, J Wolinski, D Xiao, Y Zhu, AJ Sadoff, R Ammar, P Baringer, D Coppage, R Davis, P Haas, M Kelly, N Kwak, H Lam, S Ro, Y Kubota, JK Nelson, D Perticone, R Poling, S Schrenk, MS Alam, IJ Kim, WC Li, B Nemati, V Romero, CR Sun, P-N Wang, MM Zoeller, G Crawford, R Fulton, KK Gan, T Jensen, DR Johnson, H Kagan, R Kass, R Malchow, F Morrow, J Whitmore, P Wilson

A MEASUREMENT OF IOTA-TOT(GAMMA-P) AT ROOT-S=210GEV

PHYSICS LETTERS B 293:3-4 (1992) 465-477

Authors:

M DERRICK, D KRAKAUER, S MAGILL, B MUSGRAVE, J REPOND, K SUGANO, R STANEK, RL TALAGA, J THRON, F ARZARELLO, R AVED, G BARBAGLI, G BARI, M BASILE, L BELLAGAMBA, D BOSCHERINI, G BRUNI, P BRUNI, GC ROMEO, G CASTELLINI, M CHIARINI, L CIFARELLI, F CINDOLO, F CIRALLI, A CONTIN, S DAURIA, C DELPAPA, F FRASCONI, P GIUSTI, G IACOBUCCI, G LAURENTI, G LEVI, Q LIN, B LISOWSKI, G MACCARRONE, A MARGOTTI, T MASSAM, R NANIA, C NEMOZ, F PALMONARI, G SARTORELLI, R TIMELLINI, YZ GARCIA, A ZICHICHI, A BARGENDE, F BARREIRO, J CRITTENDEN, H DABBOUS, K DESCH, B DIEKMANN, M GEERTS, G GEITZ, B GUTJAHR, H HARTMANN, J HARTMANN, D HAUN, K HEINLOTH, E HILGER, HP JAKOB, S KRAMARCZYK, M KUCKES, A MASS, S MENGEL, J MOLLEN, H MUSCH, E PAUL, R SCHATTEVOY, B SCHNEIDER, JL SCHNEIDER, R WEDEMEYER, A CASSIDY, DG CUSSANS, N DYCE, HF FAWCETT, B FOSTER, R GILMORE, GP HEATH, M LANCASTER, TJ LLEWELLYN, J MALOS, CJS MORGADO, RJ TAPPER, SS WILSON, RR RAU, A BERNSTEIN, A CALDWELL, I GIALAS, JA PARSONS, S RITZ, F SCIULLI, PB STRAUB, L WAI, S YANG, T BARILLARI, M SCHIOPPA, G SUSINNO, W BURKOT, J CHWASTOWSKI, A DWURAZNY, A ESKREYS, B NIZIOL, Z JAKUBOWSKI, K PIOTRZKOWSKI, M ZACHARA, L ZAWIEJSKI, P BORZEMSKI, K ESKREYS, K JELEN, D KISIELEWSKA, T KOWALSKI, J KULKA, E RULIKOWSKAZAREBSKA, L SUSZYCKI, J ZAJAC, T KEDZIERSKI, A KOTANSKI, M PRZYBYCIEN, LAT BAUERDICK, U BEHRENS, JK BIENLEIN, C COLDEWEY, A DANNEMANN, K DIERKS, W DORTH, G DREWS, P ERHARD, M FLASINSKI, I FLECK, A FURTJES, R GLASER, P GOTTLICHER, T HAAS, L HAGGE, W HAIN, D HASELL, H HULTSCHIG, G JAHNEN, P JOOS, M KASEMANN, R KLANNER, W KOCH, U KOTZ, H KOWALSKI, J LABS, A LADAGE, B LOHR, M LOWE, D LUKE, J MAINUSCH, O MANCZAK, M MOMAYEZI, S NICKEL, D NOTZ, I PARK, KU POSNECKER, M ROHDE, E ROS, U SCHNEEKLOTH, J SCHROEDER, W SCHULZ, F SELONKE, E TSCHESLOG, T TSURUGAI, F TURKOT, W VOGEL, T WOENIGER, G WOLF, C YOUNGMAN, HJ GRABOSCH, A LEICH, A MEYER, C RETHFELDT, S SCHLENSTEDT, R CASALBUONI, S DECURTIS, D DOMINICI, A FRANCESCATO, M NUTI, P PELFER, G ANZIVINO, R CASACCIA, I LAAKSO, S DEPASQUALE, S QIAN, L VOTANO, A BAMBERGER, A FREIDHOF, T POSER, S SOLDNERREMBOLD, G THEISEN, T TREFZGER, NH BROOK, PJ BUSSEY, AT DOYLE, JR FORBES, VA JAMIESON, C RAINE, DH SAXON, G GLOTH, U HOLM, H KAMMERLOCHER, B KREBS, T NEUMANN, K WICK, A HOFMANN, W KROGER, J KRUGER, E LOHRMANN, J MILEWSKI, M NAKAHATA, N PAVEL, G POELZ, R SALOMON, A SEIDMAN, W SCHOTT, BH WIIK, F ZETSCHE, TC BACON, I BUTTERWORTH, C MARKOU, D MCQUILLAN, DB MILLER, MM MOBAYYEN, A PRINIAS, A VORVOLAKOS, T BIENZ, H KREUTZMANN, U MALLIK, E MCCLIMENT, M ROCO, MZ WANG, P CLOTH, D FILGES, L CHEN, R IMLAY, S KARTIK, HJ KIM, RR MCNEIL, W METCALF, G CASES, L HERVAS, L LABARGA, J DELPESO, J ROLDAN, J TERRON, JF DETROCONIZ, F IKRAIAM, JK MAYER, GR SMITH, F CORRIVEAU, DJ GILKINSON, DS HANNA, LW HUNG, JW MITCHELL, PM PATEL, LE SINCLAIR, DG STAIRS, R ULLMANN, GL BASHINDZHAGYAN, PF ERMOLOV, YA GOLUBKOV, VA KUZMIN, EN KUZNETSOV, AA SAVIN, AG VORONIN, NP ZOTOV, S BENTVELSEN, A DAKE, J ENGELEN, P DEJONG, S DEJONG, M DEKAMPS, P KOOIJMAN, A KRUSE, H VANDERLUGT, V ODELL, J STRAVER, A TENNER, H TIECKE, H UIJTERWAAL, J VERMEULEN, L WIGGERS, E DEWOLF, R VANWOUDENBERG, R YOSHIDA, B BYLSMA, LS DURKIN, C LI, TY LING, KW MCLEAN, WN MURRAY, SK PARK, TA ROMANOWSKI, R SEIDLEIN, GA BLAIR, JM BUTTERWORTH, A BYRNE, RJ CASHMORE, AM COOPERSARKAR, RCE DEVENISH, DM GINGRICH, PM HALLAMBAKER, N HARNEW, T KHATRI, KR LONG, P LUFFMAN, J MCARTHUR, P MORAWITZ, J NASH, SJP SMITH, NC ROOCROFT, FF WILSON, G ABBIENDI, R BRUGNERA, R CARLIN, F DALCORSO, M DEGIORGI, U DOSSELLI, C FANIN, F GASPARINI, S LIMENTANI, M MORANDIN, M POSOCCO, J STANCO, R STROILI, C VOCI, JN LIM, BY OH, J WHITMORE, M BONORI, U CONTINO, G DAGOSTINI, M GUIDA, M IORI, S MARI, G MARINI, M MATTIOLI, D MONALDI, A NIGRO, JC HART, NA MCCUBBIN, TP SHAH, TL SHORT, E BARBERIS, N CARTIGLIA, C HEUSCH, B HUBBARD, J LESLIE, JST NG, K OSHAUGHNESSY, HF SADROZINSKI, A SEIDEN, E BADURA, J BILTZINGER, H CHAVES, M ROST, RJ SEIFERT, AH WALENTA, W WEIHS, G ZECH, S DAGAN, R HEIFETZ, A LEVY, D ZERZION, T HASEGAWA, M HAZUMI, T ISHII, S KASAI, M KUZE, Y NAGASAWA, M NAKAO, H OKUNO, K TOKUSHUKU, T WATANABE, S YAMADA, M CHIBA, R HAMATSU, T HIROSE, S KITAMURA, S NAGAYAMA, Y NAKAMITSU, M ARNEODO, M COSTA, MI FERRERO, L LAMBERTI, S MASELLI, C PERONI, A SOLANO, A STAIANO, M DARDO, DC BAILEY, D BANDYOPADHYAY, F BENARD, S BHADRA, M BRKIC, BD BUROW, FS CHLEBANA, MB CROMBIE, GF HARTNER, GM LEVMAN, JF MARTIN, RS ORR, JD PRENTICE, CR SAMPSON, GG STAIRS, RJ TEUSCHER, TS YOON, FW BULLOCK, CD CATTERALL, JC GIDDINGS, TW JONES, AM KHAN, JB LANE, PL MAKKAR, D SHAW, J SHULMAN, K BLANKENSHIP, J KOCHOCKI, B LU, LW MO, K CHARCHULA, J CIBOROWSKI, J GAJEWSKI, G GRZELAK, M KASPRZAK, M KRZYZANOWSKI, K MUCHOROWSKI, RJ NOWAK, JM PAWLAK, K STOJDA, A STOPCZYNSKI, R SZWED, T TYMIENIECKA, R WALCZAK, AK WROBLEWSKI, JA ZAKRZEWSKI, AF ZARNECKI, M ADAMUS, H ABRAMOWICZ, Y EISENBERG, C GLASMAN, U KARSHON, A MONTAG, D REVEL, EE RONAT, A SHAPIRA, I ALI, B BEHRENS, U CAMERINI, S DASU, C FORDHAM, C FOUDAS, A GOUSSIOU, M LOMPERSKI, RJ LOVELESS, P NYLANDER, M PTACEK, DD REEDER, WH SMITH, S SILVERSTEIN, WR FRISKEN, KM FURUTANI, Y IGA

A MEASUREMENT OF SINGLE AND DOUBLE PROMPT PHOTON PRODUCTION AT THE CERN P(BAR)P COLLIDER

PHYSICS LETTERS B 288:3-4 (1992) 386-394

Authors:

J ALITTI, G AMBROSINI, R ANSARI, D AUTIERO, P BAREYRE, IA BERTRAM, G BLAYLOCK, P BONAMY, K BORER, M BOURLIAUD, D BUSKULIC, G CARBONI, D CAVALLI, V CAVASINNI, P CENCI, JC CHOLLET, C CONTA, G COSTA, F COSTANTINI, L COZZI, A CRAVERO, M CURATOLO, A DELLACQUA, T DELPRETE, RS DEWOLF, L DILELLA, Y DUCROS, GF EGAN, KF EINSWEILER, B ESPOSITO, L FAYARD, A FEDERSPIEL, R FERRARI, M FRATERNALI, D FROIDEVAUX, G FUMAGALLI, JM GAILLARD, F GIANOTTI, O GILDEMEISTER, C GOSSLING, VG GOGGI, S GRUNENDAHL, K HARA, S HELLMAN, J HRIVNAC, H HUFNAGEL, E HUGENTOBLER, K HULTQVIST, E IACOPINI, J INCANDELA, K JAKOBS, P JENNI, EE KLUGE, N KURZ, S LAMI, P LARICCIA, M LEFEBVRE, L LINSSEN, M LIVAN, P LUBRANO, C MAGNEVILLE, L MALGERI, L MANDELLI, L MAPELLI, M MAZZANTI, K MEIER, B MERKEL, JP MEYER, M MONIEZ, R MONING, M MORGANTI, L MULLER, DJ MUNDAY, M NESSI, F NESSITEDALDI, C ONIONS, T PAL, MA PARKER, G PARROUR, F PASTORE, E PENNACCHIO, JM PENTNEY, M PEPE, L PERINI, C PETRIDOU, P PETROFF, H PLOTHOWBESCH, G POLESELLO, A POPPLETON, K PRETZL, M PRIMAVERA, M PUNTURO, JP REPELLIN, A RIMOLDI, M SACCHI, P SCAMPOLI, J SCHACHER, B SCHMIDT, V SIMAK, SL SINGH, V SONDERMANN, R SPIWOKS, S STAPNES, C TALAMONTI, F TONDINI, SN TOVEY, E TSESMELIS, G UNAL, M VALDATANAPPI, V VERCESI, AR WEIDBERG, PS WELLS, TO WHITE, DR WOOD, SA WOTTON, H ZACCONE, A ZYLBERSTEJN

A MEASUREMENT OF THE W AND Z PRODUCTION CROSS-SECTIONS AND A DETERMINATION OF GAMMA-W AT THE CERN PBARP COLLIDER

PHYSICS LETTERS B 276:3 (1992) 365-374

Authors:

J ALITTI, G AMBROSINI, R ANSARI, D AUTIERO, P BAREYRE, IA BERTRAM, G BLAYLOCK, P BONAMY, K BORER, M BOURLIAUD, D BUSKULIC, G CARBONI, D CAVALLI, V CAVASINNI, P CENCI, JC CHOLLET, C CONTA, G COSTA, F COSTANTINI, L COZZI, A CRAVERO, M CURATOLO, A DELLACQUA, T DELPRETE, RS DEWOLF, L DILELLA, Y DUCROS, GF EGAN, KF EINSWEILER, B ESPOSITO, L FAYARD, A FEDERSPIEL, R FERRARI, M FRATERNALI, D FROIDEVAUX, G FUMAGALLI, JM GAILLARD, F GAINOTTI, O GILDEMEISTER, C GOSSLING, VG GOGGI, S GRUNENDAHL, K HARA, S HELLMAN, J HRIVNAC, H HUFNAGEL, E HUGENTOBLER, K HULTQVIST, E IACOPINI, J INCANDELA, K JAKOBS, P JENNI, EE 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, JP MEYER, M MONIEZ, R MONING, M MORGANTI, L MULLER, DJ MUNDAY, M NESSI, F NESSITEDALDI, C ONIONS, T PAL, MA PARKER, G PARROUR, F PASTORE, E PENNACCHIO, JM PENTNEY, M PEPE, L PERINI, C PETRIDOU, P PETROFF, H PLOTHOWBESCH, G POLESELLO, A POPPLETON, K PRETZL, M PRIMAVERA, M PUNTURO, JP REPELLIN, A RIMOLDI, M SACCHI, P SCAMPOLI, J SCHACHER, B SCHMIDT, V SIMAK, SL SINGH, V SONDERMANN, R SPIWOKS, S STAPNES, C TALAMONTI, F TONDINI, SN TOVEY, E TSESMELIS, G UNAL, M VALDATANAPPI, V VERCESI, AR WEIDBERG, PS WELLS, TO WHITE, DR WOOD, SA WOTTON, H ZACCONE, A ZYLBERSTEJN