Experimental study of the orientation of three-jet events in e+e- annihilation at PETRA
Zeitschrift für Physik C Particles and Fields 47:2 (1990) 181-186
Authors:
W Braunschweig, R Gerhards, FJ Kirschfink, HU Martyn, HM Fischer, H Hartmann, J Hartmann, E Hilger, A Jocksch, R Wedemeyer, B Foster, AJ Martin, F Barreiro, E Bernardi, J Chwastowski, A Eskreys, K Gather, K Genser, H Hultschig, P Joos, J Körner, H Kowalski, A Ladage, B Löhr, D Lüke, P Mättig, D Notz, JM Pawlak, KU Pösnecker, E Ros, D Trines, R Walczak, G Wolf, H Kolanoski, T Kracht, J Krüger, E Lohrmann, G Poelz, W Zeuner, J Hassard, J Shulman, D Su, I Tomalin, A Watson, G Cases, L Hervas, A Leites, J del Peso, MG Bowler, PN Burrows, R Cashmore, ME Veitch, JC Hart, DH Saxon, S Brandt, M Holder, L Labarga, Y Eisenberg, U Karshon, G Mikenberg, A Montag, D Revel, E Ronat, A Shapira, N Wainer, G Yekutieli, A Caldwell, D Muller, S Ritz, D Strom, M Takashima, SL Wu, G Zobernig
Abstract:
The full TASSO data have been used to study the orientation of three-jet events in e+e- annihilation. The polar angle distributions of the normal to the three-jet plane as well as the polar angle distribution of the most energetic jet have been measured as a function of the thrust cut-off used to select the three-jet sample. The data corrected for radiation and detector effects are compared to QCD predictions and fair agreement is found. As a consistency check we also present measurements of the azimuthal correlations between the lepton and hadron planes. A significant azimuthal dependence is found, consistent again with the QCD predictions. © 1990 Springer-Verlag.