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Experimental limit on the decay W±→π±γ at the CERN >pp collider

Physics Letters B 277:1-2 (1992) 203-208

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 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 Müller, DJ Munday, M Nessi, F Nessi-Tedaldi, C Onions, T Pal, MA Parker, G Parrour, F Pastore, E Pennacchio, JM Pentney, M Pepe, 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 Simak, SL Singh, V Sondermann

Abstract:

Results are given on a search for the decay W±→π±γ with the UA2 detector in pp collisions at √s=630 GeV. No signal for such a process is observed and upper limits on the ration R=Γ(W±→π±γ)/ Γ(W±→e±v)<4.9× 10-3 and on the branching ratio BR(W±→π±γ)<5. 4×10-4 are derived at 95% confidence level. © 1992.
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Measurement of baryon production in B-meson decay

Physical Review D American Physical Society (APS) 45:3 (1992) 752-770

Authors:

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

Physics Letters B 275:1-2 (1992) 202-208

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 Friodevaux, G Fumagalli, JM Gaillard, F Gianotti, O Gildemeister, C Gössling, VG Goggi, S Grünendahl, 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 Müller, DJ Munday, M Nessi, F Nessi-Tedaldi, C Onions, T Pal, MA Parker, G Parrour, F Pastore, E Pennacchio, JM Pentney, M Pepe, 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 Simak, SL Singh, V Sondermann

Abstract:

Results on the cross section for the production of electron pairs in pp collisions at √s = 630 GeV are presented. The measured value is σ = 405 ± 51 (syst.) ± 84 (syst.) pb, in the invariant mass interval 10 < m< 70 GeV. The results are compared to recent theoretical calculations which include O(αs2) QCD contributions. The comparison of these data with those of lower energy experiments show approximate scaling as a function of the variable √τ = m √s. © 1992.
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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.
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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
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