A study of multi-jet events at the CERN pp collider and a search for double parton scattering

Physics Letters B 268:1 (1991) 145-154

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, V Simak, SL Singh, V Sondermann

Abstract:

A study of events containing at least four high transverse momentum jets and a search for double parton scattering (DPS) have been performed using data collected with the UA2 detector at the CERN pp Collider (√s=630 GeV). The results are in good agreement with leading order QCD calculations. A value of σDPS<0.82 nb at 95% confidence level (CL) is obtained for the DPS cross section. © 1991.

Inclusive chi (2P) production in Upsilon (3S) decay.

Physical review letters 67:13 (1991) 1696-1700

Authors:

R Morrison, D Schmidt, M Procario, DR Johnson, K Lingel, P Rankin, JG Smith, 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, 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, JR Patterson, D Peterson, M Pisharody, D Riley, M Sapper, M Selen, H Worden, M Worris, P Avery, A Freyberger, J Rodriguez, J Yelton, K Kinoshita, F Pipkin, R Wilson, J Wolinski, D Xiao, AJ Sadoff, R Ammar, P Baringer, D Coppage, R Davis, P Haas, M Kelly, N Kwak, H Lam

Measurement of the inclusive B* cross section above the Upsilon (4S).

Physical review letters 67:13 (1991) 1692-1695

Authors:

DS Akerib, B Barish, DF Cowen, G Eigen, R Stroynowski, J Urheim, AJ Weinstein, R Morrison, D Schmidt, M Procario, DR Johnson, K Lingel, P Rankin, JG Smith, J Alexander, 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, 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, JR Patterson, D Peterson, M Pisharody, D Riley, M Sapper, M Selen, H Worden, M Worris, P Avery, A Freyberger, J Rodriguez, J Yelton, K Kinoshita, F Pipkin, R Wilson, J Wolinski, D Xiao, AJ Sadoff, R Ammar, P Baringer

Study of continuum D*+ spin alignment.

Physical review. D, Particles and fields 44:3 (1991) 593-600

Authors:

Y Kubota, JK Nelson, D Perticone, R Poling, S Schrenk, 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, IP Shipsey, M Battle, H Kroha, K Sparks, EH Thorndike, C Wang, MS Alam, IJ Kim, WC Li, B Nemati, V Romero, CR Sun, P Wang, MM Zoeller, M Goldberg, T Haupt, N Horwitz, V Jain, MD Mestayer, GC Moneti, Y Rozen, P Rubin, T Skwarnicki, S Stone, M Thusalidas, W Yao, G Zhu, AV Barnes, J Bartelt, SE Csorna, T Letson, P Avery, J Alexander, M Artuso, C Bebek, K Berkelman, D Besson, T Browder, DG Cassel, E Cheu

Inclusive production of the charmed baryon Lambda c+ from e+e- annihilations at sqrt s =10.55 GeV.

Physical review. D, Particles and fields 43:11 (1991) 3599-3610

Authors:

P Avery, D Besson, L Garren, J Yelton, K Kinoshita, FM Pipkin, M Procario, R Wilson, J Wolinski, D Xiao, Y Zhu, R Ammar, P Baringer, D Coppage, P Haas, N Kwak, H Lam, S Ro, Y Kubota, JK Nelson, D Perticone, R Poling, R Fulton, T Jensen, DR Johnson, H Kagan, R Kass, F Morrow, J Whitmore, P Wilson, D Bortoletto, J Dominick, RL McIlwain, DH Miller, CR Ng, SF Schaffner, EI Shibata, IP Shipsey, W Yao, K Sparks, EH Thorndike, C Wang, MS Alam, IJ Kim, WC Li, XC Lou, V Romero, CR Sun, P Wang, MM Zoeller, M Goldberg, T Haupt, N Horwitz, V Jain, MD Mestayer, GC Moneti, Y Rozen, P Rubin, V Sharma, T Skwarnicki, M Thulasidas, G Zhu, SE Csorna, T Letson