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Measurement of the asymmetry ofb quark production ine+e− annihilation at

Zeitschrift für Physik C Particles and Fields Springer Nature 48:3 (1990) 433-444

Authors:

TASSO Collaboration, W Braunschweig, R Gerhards, FJ Kirschfink, H-U Martyn, HM Fischer, H Hartmann, J Hartmann, E Hilger, A Jocksch, R Wedemeyer, B Foster, AJ Martin, E Bernardi, J Chwastowski, A Eskreys, K Genser, H Hultschig, P Joos, H Kowalski, A Ladage, B Löhr, D Lüke, P Mättig, D Notz, JM Pawlak, K-U Pösnecker, E Ros, D Trines, R Walczak, G Wolf, H Kolanoski, J Krüger, E Lohrmann, G Poelz, W Zeuner, D Binnie, J Hassard, J Shulman, D Su, I Tomalin, A Watson, F Barreiro, G Cases, L Hervas, J del Peso, MG Bowler, PN Burrows, RJ Cashmore, ME Veitch, JC Hart, DH Saxon, S Brandt, M Holder, Y Eisenberg, U Karshon, A Montag, D Revel, E Ronat, N Wainer, A Caldwell, D Muller, S Ritz, D Strom, M Takashima, Sau Lan Wu, G Zobernig
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Observation of laser oscillation in nitric oxide at 218 nm.

Opt Lett 15:8 (1990) 437-439

Authors:

SM Hooker, CE Webb

Abstract:

We have recently proposed a scheme to produce coherent radiation at eight or more wavelengths between 158 and 242 nm by optically pumping a high-lying electronic level of nitric oxide. We report here the successful operation of this scheme to produce laser oscillation at 218 nm. The possibility of using this scheme to produce laser oscillation at other wavelengths is discussed.
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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.
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Global jet properties at 14-44 GeV center of mass energy in e+e- annihilation

Zeitschrift für Physik C Particles and Fields 47:2 (1990) 187-198

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, E Bernardi, J Chwastowski, A Eskreys, K Genser, H Hultschig, P Joos, 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, J Krüger, E Lohrmann, G Poelz, W Zeuner, J Hassard, J Shulman, D Su, I Tomalin, F Barreiro, G Cases, L Hervas, J del Peso, MG Bowler, PN Burrows, RJ Cashmore, ME Veitch, JC Hart, DH Saxon, S Brandt, M Holder, Y Eisenberg, U Karshon, A Montag, D Revel, E Ronat, N Wainer, A Caldwell, D Muller, S Ritz, D Strom, M Takashima, SL Wu, G Zobernig

Abstract:

Jet properties in e+e- annihilation at center of mass energies of 14, 22, 35 and 43.7 GeV were studied with the data collected in the TASSO detector at PETRA, using the same evaluation procedures for all the energies. The total hadronic cross section ratio for the center of mass energy interval 39-47 GeV was determined to be ℛ=4.11±0.05 (stat)±0.18(syst.) at {Mathematical expression} GeV. Corrected distributions of global shape variables are presented as well as the inclusive charged particle distributions for scaled momentum and transverse momentum. The center of mass energy evolution of the average sphericity, thrust, aplanarity and particle momentum is shown. © 1990 Springer-Verlag.
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Strange meson production in e+e- annihilation

Zeitschrift für Physik C Particles and Fields 47:2 (1990) 167-179

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, 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, JF de Trocóniz, 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 inclusive production of strange mesons in e+e- annihilations. Differential and total cross sections have been measured in the centre of mass energy range 14 to 44 GeV for K0, {Mathematical expression} and 34.5 to 44 GeV for K*± (892). We have investigated the strange meson production properties in jets by studying the rapidity and pt2 distributions as well as the evolution of the multiplicities as a function of the event sphericity. We find no evidence that the strange meson yields increase with increasing sphericity faster than the total charged multiplicity. © 1990 Springer-Verlag.
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