Plasma-Wakefield Accelerator Group: publications

Search for spinless bosons in e+e- annihilation

Physics Letters B 154:2-3 (1985) 236-242

Authors:

M Althoff, W Braunschweig, FJ Kirschfink, HU Martyn, R Rosskamp, D Schmitz, H Siebke, W Wallraff, J Eisenmann, HM Fischer, H Hartmann, A Jocksch, G Knop, H Kolanoski, H Kück, V Mertens, R Wedemeyer, B Foster, A Eskreys, R Fohrmann, K Gather, H Hultschig, P Joos, B Klima, U Kötz, H Kowalski, A Ladage, B Löhr, D Lüke, P Mättig, D Notz, RJ Nowak, J Pyrlik, M Rushton, W Schütte, D Trines, T Tymieniecka, G Wolf, G Yekutieli, W Zeuner, E Hilger, T Kracht, HL Krasemann, P Leu, E Lohrmann, D Pandoulas, G Poelz, KU Pösnecker, R Beuselinck, DM Binnie, PJ Dornan, DA Garbutt, C Jenkins, TD Jones, WG Jones, J McCardle, JK Sedgbeer, J Thomas, WAT Wan Abdullah, MG Bowler, P Bull, RJ Cashmore, PEL Clarke, P Dauncey, R Devenish, P Grossmann, CM Hawkes, DJ Mellor, C Youngman, SL Lloyd, KW Bell, GE Forden, JC Hart, J Harvey, DK Hasell, DH Saxon, F Barreiro, S Brandt, M Dittmar, M Holder, G Kreutz, B Neumann, E Duchovni, Y Eisenberg, U Karshon, G Mikenberg, R Mir, D Revel, E Ronat, A Shapira, G Baranko, A Caldwell, M Cherney, JM Izen, M Mermikides, S Ritz, G Rudolph, D Strom, M Takashima, H Venkataramania

Abstract:

We have measured the cross sections for e⁺e^- → e⁺e^-, e⁺e^- → μ⁺μ^-, e⁺e^- → γγ and e⁺e^- → hadrons in an energy scan at center of mass energies between 39.79 and 46.72 GeV in 30 MeV steps. New spinless bosons, whose existence has been postulated as a possible means to explain the anomalously large radiative width of the Z⁰ found at the CERN SPS pp collider, are ruled out in the scan region. The data are used to set limits on the couplings to lepton, photon and quark pairs of bosons with masses above 46.72 GeV. © 1985.

A study of 3-jet events in e⁺e^- annihilation into hadrons at 34.6 GeV c.m. energy

Zeitschrift für Physik C Particles and Fields 29:1 (1985) 29-40

Authors:

M Althoff, W Braunschweig, FJ Kirschfink, HU Martyn, R Rosskamp, D Schmitz, H siebke, W Wallraff, J Eisenmann, HM Fischer, H Hartmann, J Jocksch, G Knop, H Kolanoski, H Kück, V Mertens, R Wedemeyer, B Foster, A Wood, E Bernardi, Y Eisenberg, A Eskreys, R Fohrmann, K Gather, H Hultschig, P Joos, U Karshon, B Klima, U Kötz, H Kowalski, A Ladage, B Löhr, D Lüke, P Mättig, G Mikenberg, D Notz, J Pyrlik, W Schütte, D Trines, T Tymieniecka, G Wolf, W Zeuner, E Hilger, T Kracht, HL Krasemann, E Lohrmann, D Pandoulas, G Poelz, KU Pösnecker, DM Binnie, PJ Dornan, DA Garbutt, C Jenkins, WG Jones, JK Sedgbeer, D Su, J Thomas, WAT Wan Abdullan, F Barreiro, L Labarga, E Ros, MG Bowler, P Bull, RJ Cashmore, P Dauncey, R Devenish, CM Hawkes, G Heath, DJ Mellor, SL Lloyd, KW Bell, GE Forden, JC Hart, DK Hasell, DH Saxon, S Brandt, M Dittmar, M Holder, G Kreutz, B Neumann, E Duchovni, A Montag, R Mir, D Revel, E Ronat, G Yekutieli, A Shapira, G Baranko, A Caldwell, M Cherney, M Hildebrandt, JM Izen, M Mermikides, S Ritz, G Rudolph, D Strom, M Takashima, H Venkataramania, E Wicklund, SL Wu

Abstract:

Three-jet events produced by e+e- annihilation into hadrons at 34.6 GeV c.m. energy were studied by comparing them with 2nd order QCD and two different models of fragmentation. The distribution of low energy particles in the 3-jet plane is found to be better described by the LUND color string model than by the independent jet model. The opposite is true for more energetic particles flowing between the 3 jets. The average transverse momenta in jets can be described with values of σq between 350 and 500 MeV/c for the gluon jet. © 1985 Springer-Verlag.

The TASSO vertex detector

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 228:2-3 (1985) 267-277

Authors:

DM Binnie, W Cameron, AJ Campbell, B Foster, DA Garbutt, C Jenkins, WG Jones, J McCardle, DG Miller, J Thomas, H Hartmann, R Hensler, M Hildebrandt, D Hubert, A Ladage, B Lohr, RJ Nowak, K Rehlich, D Trines, G Wolf, JA Blissett, BT Payne, AG Parham, DH Saxon, DJ White, D Strom, H Venkataramania, Sau Lan Wu

A DETAILED STUDY OF STRANGE PARTICLE-PRODUCTION IN E+E- ANNIHILATION AT HIGH-ENERGY

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS 27:1 (1985) 27-37

Authors:

M ALTHOFF, W BRAUNSCHWEIG, FJ KIRSCHFINK, K LUBELSMEYER, HU MARTYN, P ROSSKAMP, D SCHMITZ, H SIEBKE, W WALLRAFF, J EISENMANN, HM FISCHER, H HARTMANN, A JOKSCH, G KNOP, H KOLANOSKI, H KUCK, V MERTENS, R WEDEMEYER, B FOSTER, A ESKREYS, K GATHER, M HILDEBRANDT, H HULTSCHIG, P JOOS, U KOTZ, H KOWALSKI, A LADAGE, B LOHR, D LUKE, P MATTIG, D NOTZ, RJ NOWAK, J PYRLIK, E RONAT, M RUSHTON, W SCHUTTE, D TRINES, T TYMIENIECKA, G WOLF, G YEKUTIELI, C XIAO, R FOHRMANN, E HILGER, T KRACHT, HL KRASEMANN, P LEU, E LOHRMANN, D PANDOULAS, G POELZ, KU POSNECKER, BH WIIK, R BEUSELINCK, DM BINNIE, AJ CAMPBELL, PJ DORNAN, DA GARBUTT, C JENKINS, TD JONES, WG JONES, J MCCARDLE, JK SEDGBEER, J THOMAS, WATW ABDULLAH, KW BELL, MG BOWLER, P BULL, RJ CASHMORE, PEL CLARKE, P DAUNCEY, R DEVENISH, P GROSSMANN, CM HAWKES, SL LLOYD, D MELLOR, C YOUNGMAN, GE FORDEN, JC HART, J HARVEY, DK HASELL, DH SAXON, PL WOODWORTH, F BARREIRO, S BRANDT, M DITTMAR, M HOLDER, G KREUTZ, B NEUMANN, E DUCHOVNI, Y EISENBERG, U KARSHON, G MIKENBERG, R MIR, D REVEL, A SHAPIRA, G BARANKO, A CALDWELL, M CHERNEY, JM IZEN, M MERMIKIDES, S RITZ, G RUDOLPH, D STROM, M TAKASHIMA, H VENKATARAMANIA, E WICKLUND, SL WU, G ZOBERNIG

SEARCH FOR 2-PHOTON PRODUCTION OF RESONANCES DECAYING INTO KKBAR AND KKBAR-PI

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS 29:2 (1985) 189-196

Authors:

M ALTHOFF, W BRAUNSCHWEIG, FJ KIRSCHFINK, HU MARTYN, R ROSSKAMP, H SIEBKE, W WALLRAFF, J EISENMANN, HM FISCHER, H HARTMANN, A JOCKSCH, G KNOP, H KOLANOSKI, H KUCK, V MERTENS, R WEDEMEYER, B FOSTER, A WOOD, E BERNARDI, Y EISENBERG, A ESKREYS, K GATHER, H HULTSCHIG, P JOOS, B KLIMA, H KOWALSKI, A LADAGE, B LOHR, D LUKE, P MATTIG, G MIKENBERG, D NOTZ, D REVEL, D TRINES, T TYMIENIECKA, R WALCZAK, G WOLF, W ZEUNER, E HILGER, T KRACHT, HL KRASEMANN, E LOHRMANN, G POELZ, KU POSNECKER, DM BINNIE, PJ DORNAN, DA GARBUTT, C JENKINS, WG JONES, JK SEDGBEER, D SU, J THOMAS, WATW ABDULLAH, F BARREIRO, L LABARGA, E ROS, MG BOWLER, P BULL, RJ CASHMORE, P DAUNCEY, R DEVENISH, CM HAWKES, G HEATH, DJ MELLOR, SL LLOYD, KW BELL, GE FORDEN, JC HART, DK HASELL, DH SAXON, S BRANDT, M DITTMAR, M HOLDER, G KREUTZ, B NEUMANN, E DUCHOVNI, U KARSHON, A MONTAG, R MIR, E RONAT, G YEKUTIELI, A SHAPIRA, G BARANKO, A CALDWELL, M CHERNEY, M HILDEBRANDT, JM IZEN, M MERMIKIDES, S RITZ, D STROM, M TAKASHIMA, H VENKATARAMANIA, E WICKLUND, SL WU, G ZOBERNIG

91̽��