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COMPARISON OF E+E- ANNIHILATION WITH QCD AND DETERMINATION OF THE STRONG COUPLING-CONSTANT

PHYSICS LETTERS B 94:3 (1980) 437-443

Authors:

R BRANDELIK, W BRAUNSCHWEIG, K GATHER, V KADANSKY, K LUBELSMEYER, P MATTIG, HU MARTYN, G PEISE, J RIMKUS, HG SANDER, D SCHMITZ, A SCHULTZVONDRATZIG, D TRINES, W WALLRAFF, H BOERNER, HM FISCHER, H HARTMANN, E HILGER, W HILLEN, L KOEPKE, G KNOP, P LEU, B LOHR, R WEDEMEYER, N WERMES, M WOLLSTADT, H BURKHARDT, DG CASSEL, D HEYLAND, H HULTSCHIG, P JOOS, W KOCH, P KOEHLER, U KOTZ, H KOWALSKI, A LADAGE, D LUKE, HL LYNCH, G MIKENBERG, D NOTZ, J PYRLIK, R RIETHMULLER, M SCHLIWA, P SODING, BH WIIK, G WOLF, R FOHRMANN, M HOLDER, G POELZ, O ROMER, R RUSCH, P SCHMUSER, DM BINNIE, PJ DORNAN, NA DOWNIE, DA GARBUTT, WG JONES, SL LLOYD, D PANDOULAS, J SEDGBEER, S YARKER, C YOUNGMAN, RJ BARLOW, I BROCK, RJ CASHMORE, R DEVENISH, P GROSSMANN, J ILLINGWORTH, M OGG, B ROE, GL SALMON, T WYATT, KW BELL, B FOSTER, JC HART, J PROUDFOOT, DR QUARRIE, DH SAXON, PL WOODWORTH, Y EISENBERG, U KARSHON, D REVEL, E RONAT, A SHAPIRA, J FREEMAN, P LECOMTE, T MEYER, SL WU, G ZOBERNIG
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K0-PRODUCTION IN E+E- ANNIHILATIONS AT 30 GEV CENTER OF MASS-ENERGY

PHYSICS LETTERS B 94:1 (1980) 91-95

Authors:

R BRANDELIK, W BRAUNSCHWEIG, K GATHER, V KADANSKY, K LUBELSMEYER, P MATTIG, HU MARTYN, G PEISE, J RIMKUS, HG SANDER, D SCHMITZ, A SCHULTZVONDRATZIG, D TRINES, W WALLRAFF, H BOERNER, HM FISCHER, H HARTMANN, E HILGER, W HILLEN, L KOEPKE, G KNOP, P LEU, B LOHR, R WEDEMEYER, N WERMES, M WOLLSTADT, H BURKHARDT, DG CASSEL, D HEYLAND, H HULTSCHIG, P JOOS, W KOCH, P KOEHLER, U KOTZ, H KOWALSKI, A LADAGE, D LUKE, HL LYNCH, G MIKENBERG, D NOTZ, J PYRLIK, R RIETHMULLER, M SCHLIWA, P SODING, BH WIIK, G WOLF, R FOHRMANN, M HOLDER, G POELZ, O ROMER, R RUSCH, P SCHMUSER, DM BINNIE, PJ DORNAN, NA DOWNIE, DA GARBUTT, WG JONES, SL LLOYD, D PANDOULAS, J SEDGBEER, S YARKER, C YOUNGMAN, RJ BARLOW, I BROCK, RJ CASHMORE, R DEVENISH, P GROSSMANN, J ILLINGWORTH, M OGG, B ROE, GL SALMON, T WYATT, KW BELL, B FOSTER, JC HART, J PROUDFOOT, DR QUARRIE, DH SAXON, PL WOODWORTH, Y EISENBERG, U KARSHON, D REVEL, E RONAT, A SHAPIRA, J FREEMAN, P LECOMTE, T MEYER, SL WU, G ZOBERNIG
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TEST OF QED IN E+E- ANNIHILATION AT ENERGIES BETWEEN 12 AND 31.6 GEV

PHYSICS LETTERS B 94:2 (1980) 259-265

Authors:

R BRANDELIK, W BRAUNSCHWEIG, K GATHER, V KADANSKY, K LUBELSMEYER, P MATTIG, HU MARTYN, G PEISE, J RIMKUS, HG SANDER, D SCHMITZ, A SCHULTZVONDRATZIG, D TRINES, W WALLRAFF, H BOERNER, HM FISCHER, H HARTMANN, E HILGER, W HILLEN, G KNOP, L KOEPKE, P LEU, B LOHR, R WEDEMEYER, N WERMES, M WOLLSTADT, H BURKHARDT, DG CASSEL, D HEYLAND, H HULTSCHIG, P JOOS, W KOCH, P KOEHLER, U KOTZ, H KOWALSKI, A LADAGE, D LUKE, HL LYNCH, G MIKENBERG, D NOTZ, J PYRLIK, R RIETHMULLER, M SCHLIWA, P SODING, BH WIIK, G WOLF, R FOHRMANN, M HOLDER, G POELZ, O ROMER, R RUSCH, P SCHMUSER, DM BINNIE, PJ DORNAN, NA DOWNIE, DA GARBUTT, WG JONES, SL LLOYD, D PANDOULAS, J SEDGBEER, S YARKER, C YOUNGMAN, RJ BARLOW, I BROCK, RJ CASHMORE, R DEVENISH, P GROSSMANN, J ILLINGWORTH, M OGG, B ROE, GL SALMON, T WYATT, KW BELL, B FOSTER, JC HART, J PROUDFOOT, DR QUARRIE, DH SAXON, PL WOODWORTH, Y EISENBERG, U KARSHON, D REVEL, E RONAT, A SHAPIRA, J FREEMAN, P LECOMTE, T MEYER, SL WU, G ZOBERNIG
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Energy scan for narrow states in e+e- annihilation at C.M. energies between 29.90 and 31.46 GeV

Physics Letters B 88:1-2 (1979) 199-202

Authors:

R Brandelik, W Braunschweig, K Gather, V Kadansky, K Lübelsmeyer, P Mättig, HU Martyn, G Peise, J Rimkus, HG Sander, D Schmitz, A Schultz von Dratzig, D Trines, W Wallraff, H Boerner, HM Fischer, H Hartmann, E Hilger, W Hillen, G Knop, P Leu, B Löhr, R Wedemeyer, N Wermes, M Wollstadt, DG Cassel, D Heyland, H Hultschig, P Joos, W Koch, P Koehler, U Kötz, H Kowalski, A Ladage, D Lüke, HL Lynch, G Mikenberg, D Notz, J Pyrlik, R Riethmüller, M Schliwa, P Söding, BH Wiik, G Wolf, R Fohrmann, M Holder, G Poelz, J Ringel, O Römer, R Rüsch, P Schmüser, DM Binnie, PJ Dornan, NA Downie, DA Garbutt, WG Jones, SL Lloyd, D Pandoulas, J Sedgbeer, S Yanker, C Youngman, RJ Barlow, RJ Cashmore, J Illingworth, M Ogg, B Roe, GL Salmon, KW Bell, W Chinowsky, B Foster, JC Hart, J Proudfoot, DR Quarrie, DH Saxon, PL Woodworth, Y Eisenberg, U Karshon, D Revel, E Ronat, A Shapira, J Freeman, P Lecomte, T Meyer, S Lan Wu, G Zobernig

Abstract:

A fine energy scan has been performed to search for narrow states in e+e- annihilation at c.m. energies between 29.90 and 31.46 GeV. No such state has been observed. The 90% confidence upper limit on the leptonic decay width times the hadronic decay branching ratio is ΓeeBh<1.6 keV. © 1979.
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Evidence for planar events in e+e- annihilation at high energies

Physics Letters B 86:2 (1979) 243-249

Authors:

R Brandelik, W Braunschweig, K Gather, V Kadansky, K Lübelsmeyer, P Mättig, HU Martyn, G Peise, J Rimkus, HG Sander, D Schmitz, A Schultz von Dratzig, D Trines, W Wallraff, H Boerner, HM Fischer, H Hartmann, E Hilger, W Hillen, G Knop, W Korbach, P Leu, B Löhr, F Roth, W Rühmer, R Wedemeyer, N Wermes, M Wollstadt, R Bühring, R Fohrmann, D Heyland, H Hultschig, P Joos, W Koch, U Kötz, H Kowalski, A Ladage, D Lüke, HL Lynch, G Mikenberg, D Notz, J Pyrlik, R Riethmüller, M Schliwa, P S̈oding, BH Wiik, G Wolf, M Holder, G Poelz, J Ringel, O Römer, R Rüsch, P Schmüser, DM Binnie, PJ Dornan, NA Downie, DA Garbutt, WG Jones, SL Lloyd, D Pandoulas, A Pevsner, J Sedgebeer, S Yarker, C Youngman, RJ Barlow, RJ Cashmore, J Illingworth, M Ogg, GL Salmon, KW Bell, W Chinowsky, B Foster, JC Hart, J Proudfoot, DR Quarrie, DH Saxon, PL Woodworth, Y Eisenberg, U Karshon, E Kogan, D Revel, E Ronat, A Shapira, J Freeman, P Lecomte, T Meyer, LW Sau, G Zobernig

Abstract:

Hadron jets produced in e+e- annihilation between 13 GeV and 31.6 GeV in c.m. at PETRA are analyzed. The transverse momentum of the jets is found to increase strongly with c.m. energy. The broadening of the jets is not uniform in azimuthal angle around the quark direction but tends to yield planar events with large and growing transverse momenta in the plane and smaller transverse momenta normal to the plane. The simple qq collinear jet picture is ruled out. The observation of planar events shows that there are three basic particles in the final state. Indeed, several events with three well-separated jets of hadrons are observed at the highest energies. This occurs naturally when the outgoing quark radiates a hard noncollinear gluon, i.e., e+e- → qqg with the quarks and the gluons fragmenting into hadrons with limited transverse momenta. © 1979.
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