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Search for new sequential leptons in e+e- annihilation at petra energies

Physics Letters B 99:2 (1981) 163-168

Authors:

R Brandelik, W Braunschweig, K Gather, V Kadansky, FJ Kirschfink, K Lübelsmeyer, HU Martyn, G Peise, J Rimkus, HG Sander, D Schmitz, AS von Dratzig, D Trines, W Wallraff, H Boerner, HM Fischer, H Hartmann, E Hilger, W Hillen, G Knop, L Koepke, H Kolanoski, P Leu, R Wedemeyer, N Wermes, M Wollstadt, H Burkhardt, DG Cassel, D Heyland, H Hultschig, P Joos, W Koch, P Koehler, U Kötz, H Kowalski, A Ladage, D Lüke, HL Lynch, P Mättig, D Notz, J Pyrlik, R Riethmüller, P Söding, BH Wiik, G Wolf, R Fohrmann, M Holder, G Poelz, O Römer, R Rüsch, P Schmüser, I Al-Agil, DM Binnie, PJ Dornan, MA Downie, DA Garbutt, WG Jones, SL Lloyd, D Pandoulas, J Sedgbeer, RA Stern, S Yarker, C Youngman, IC Brock, RJ Cashmore, R Devenish, P Grossmann, J Illingworth, M Ogg, GL Salmon, TR Wyatt, KW Bell, B Foster, JC Hart, J Proudfoot, DR Quarrie, DH Saxon, PL Woodworth, E Duchovni, Y Eisenberg, U Karshon, G Mikenberg, D Revel, E Ronat, A Shapira, T Barklow, J Freeman, P Lecomte, T Meyer, G Rudolph, E Wicklund, S Lan Wu, G Zobernig
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Ξ(1320) and Ξ(1530) production in K-p interactions at 4.2 GeV/c

Nuclear Physics, Section B 178:1 (1981) 1-30

Authors:

M Mazzucato, D Pennino, M Aguilar-Benitez, R Armenteros, C Dionisi, P Gavillet, M Losty, PF Loverre, R Blokzijl, B Jongejans, JC Kluyver, J Engelen, WK Kittel, W Metzger, R Van De Walle, B Foster, P Grossman, J Wells

Abstract:

The reactions K-p → Ξ 0 -(1320)K 0 +, Ξ-(1320)K+(890), Ξ 0 -(1530) K 0 - and Ξ 0 -(1530)K 0 +(890) are studied at 4.2 GeV/c incident momentum. The data come from a high-statistics bubble chamber experiment with a sensitivity of ∼ 133 events/μb. Total anddifferential cross sections are presented. The results are compared to the SU(3)-related processes K+p → pK+ and K+p → pK+(890) in the backward hemisphere. In the forward hemisphere "forbidden" peaks are observed and current ideas about them are discussed. © 1981.
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Two-photon excitation of the tensor meson f0(1270)

Zeitschrift für Physik C Particles and Fields 10:2 (1981) 117-122

Authors:

R Brandelik, W Braunschweig, K Gather, FJ Kirschfink, K Lübelsmeyer, 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, L Köpke, H Kolanoski, P Leu, R Wedemeyer, N Wermes, M Wollstadt, H Burkhardt, DG Cassel, S Cooper, D Heyland, H Hultschig, P Joos, W Koch, P Koehler, U Kötz, H Kowalski, A Ladage, D Lüke, HL Lynch, P Mättig, D Notz, J Pyrlik, R Riethmüller, P Söding, BH Wiik, G Wolf, R Fohrmann, M Holder, G Poelz, O Römer, R Rüsch, P Schmüser, I Al-Agil, R Beuselinck, DM Binnie, PJ Dornan, DA Garbutt, WG Jones, SL Lloyd, D Pandoulas, J Sedgbeer, RA Stern, S Yarker, IC Brock, RJ Cashmore, R Devenish, P Grossmann, J Illingworth, M Ogg, GL Salmon, TR Wyatt, C Youngman, KW Beli, B Foster, JC Hart, J Proudfoot, DR Quarrie, DH Saxon, PL Woodworth, E Duchovni, Y Eisenberg, U Karshon, G Mikenberg, D Revel, E Ronat, A Shapira, T Barklow, J Freeman, P Lecomte, T Meyer, G Rudolph, E Wicklund, SL Wu, G Zobernig

Abstract:

We have measured charged particle pair production in two-photon scattering at the e+e- storage ring PETRA. While the main source of such events is the production of lepton pairs, the presence of an additional process is clearly indicated by the measured invariant mass distribution of the two particles and their angular distributions. We determine that the excess is mainly due to the decay f0(1270)→π+π-. We derive a width Γ(f0→γγ)=3.2±0.2±0.6 keV (statistical and systematic). © 1981 Springer-Verlag.
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A large scintillator array for particle identification by time of flight

Nuclear Instruments and Methods Elsevier 179:1 (1981) 27-38

Authors:

KW Bell, JA Blissett, B Foster, JC Hart, AG Parham, BT Payne, J Proudfoot, DH Saxon, PL Woodworth
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2-PHOTON EXCITATION OF THE TENSOR MESON FO-(1270)

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS 10:2 (1981) 117-122

Authors:

R BRANDELIK, W BRAUNSCHWEIG, K GATHER, FJ KIRSCHFINK, K LUBELSMEYER, HU MARTYN, G PEISE, J RIMKUS, HG SANDER, D SCHMITZ, AS VONDRATZIG, D TRINES, W WALLRAFF, H BOERNER, HM FISCHER, H HARTMANN, E HILGER, W HILLEN, G KNOP, L KOPKE, H KOLANOSKI, P LEU, R WEDEMEYER, N WERMES, M WOLLSTADT, H BURKHARDT, DG CASSEL, S COOPER, D HEYLAND, H HULTSCHIG, P JOOS, W KOCH, P KOEHLER, U KOTZ, H KOWALSKI, A LADAGE, D LUKE, HL LYNCH, P MATTIG, D NOTZ, J PYRLIK, R RIETHMULLER, P SODING, BH WIIK, G WOLF, R FOHRMANN, M HOLDER, G POELZ, O ROMER, R RUSCH, P SCHMUSER, I ALAGIL, R BEUSELINCK, DM BINNIE, PJ DORNAN, DA GARBUTT, WG JONES, SL LLOYD, D PANDOULAS, J SEDGBEER, RA STERN, S YARKER, IC BROCK, RJ CASHMORE, R DEVENISH, P GROSSMANN, J ILLINGWORTH, M OGG, GL SALMON, TR WYATT, C YOUNGMAN, KW BELL, B FOSTER, JC HART, J PROUDFOOT, DR QUARRIE, DH SAXON, PL WOODWORTH, E DUCHOVNI, Y EISENBERG, U KARSHON, G MIKENBERG, D REVEL, E RONAT, A SHAPIRA, T BARKLOW, J FREEMAN, P LECOMTE, T MEYER, G RUDOLPH, E WICKLUND, SL WU, G ZOBERNIG
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