Prof Roman Walczak: Publications

Inclusive proton and antiproton production in π± hydrogen and π± nucleus interactions at 30 GeV/c

Zeitschrift für Physik A Hadrons and nuclei Springer Nature 324:1 (1986) 1-8

Authors:

MC Abreu, T Armstrong, M Baubillier, W Beusch, A Burns, JM Gago, A Jacholkowski, K Knudson, S Otwinowski, D Perrin, A Palano, M Pimenta, E Quercigh, Z Strachman, M Szeptycka, S Tkaczyk, R Walczak, R Zitoun

Nuclear stopping power in αα anddd collisions

Zeitschrift für Physik A Hadrons and nuclei Springer Nature 325:1 (1986) 7-14

Authors:

W Bell, A Breakstone, G Claesson, HB Crawley, GM Dallavalle, K Doroba, D Drijard, F Fabbri, A Firestone, MA Faessler, HG Fischer, SY Fung, S Garpman, W Geist, G Giacomelli, R Gokieli, M Gorbics, CR Gruhn, P Hanke, M Heiden, W Herr, TJ Ketel, EE Kluge, JW Lamsa, T Lohse, I Lund, R Mankel, WT Meyer, G Mornacchi, T Nakada, I Otterlund, M Panter, H Pugh, A Putzer, K Rauschnabel, B Rensch, F Rimondi, M Schmelling, L Schroeder, R Sosnowski, E Stenlund, TJM Symons, M Szczekowski, R Szwed, O Ullaland, R Walczak, D Wegener, M Wunsch

Inclusive π0 production by e+e- annihilation at 34.6 GeV center of mass energy

Zeitschrift Fur Physik C Particles and Fields 33:1 (1986) 13-22

Authors:

W Braunschweig, R Gerhards, FJ Kirschfink, HU Martyn, P Rosskamp, E Vogel, W Wallraff, B Bock, J Eisenmann, HM Fischer, H Hartmann, E Hilger, A Jocksch, H Kolanoski, H Kück, V Mertens, R Wedemeyer, B Foster, AJ Martin, E Bernardi, Y Eisenberg, A Eskreys, K Gather, H Hultschig, P Joos, B Klima, H Kowalski, A Ladage, B Löhr, D Lüke, P Mättig, A Montag, D Notz, A Shapira, D Trines, T Tymieniecka, G Tysarczyk, R Walczak, G Wolf, G Yekutieli, W Zeuner, T Kracht, HL Krasemann, J Krueger, E Lohrmann, G Poelz, KU Poesnecker, DM Binnie, PJ Dornan, DA Garbutt, C Jenkins, WG Jones, JK Sedgbeer, J Shulman, D Su, AP Watson, F Barreiro, E Ros, C Balkwill, MG Bowler, PN Burrows, RJ Cashmore, P Dauncey, R Devenish, G Heath, DJ Mellor, P Ratoff, I Tomalin, JM Yelton, SL Lloyd, GE Forden, JC Hart, DK Hasell, DH Saxon, S Brandt, M Holder, L Labarga, B Neumann, U Karshon, G Mikenberg, R Mir, D Revel, E Ronat, N Wainer, G Baranko, A Caldwell, M Cherney, JM Izen, S Ritz, D Strom, M Takashima, E Wicklund, SL Wu, G Zobernig

Abstract:

The cross section for the process e⁺e^-→϶�⁰+ anything has been measured at an average center of mass energy of 34.6 GeV for π⁰ energies between 0.7 and 17 GeV. The angular distribution for π⁰ energies larger than 2 GeV is of the form dσ/dΩ∼1+Acos²θ, with A=1.2±0.5. The ratio of π⁰ to π^± production in the measured energy range is 2σ(π⁰)/(σ(π⁺)+σ(π^-))=1.13±0.18 The form of the differential cross sections agrees within the errors. The mean π⁰ multiplicity is 5.8±0.9. © 1986 Springer-Verlag.

Search for two-photon production of resonances decaying into K {Mathematical expression} and K {Mathematical expression}π

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 Kück, 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 Löhr, D Lüke, P Mättig, 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 Pösnecker, DM Binnie, PJ Dornan, DA Garbutt, C Jenkins, WG Jones, JK Sedgbeer, D Su, J Thomas, WAT Wan 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

Abstract:

An analysis of the production of KS⁰KS⁰ and K^±Ks⁰π^∓ by two quasi-real photons is presented. The cross section for γγ→K⁰ {Mathematical expression}, which is given for the γγ invariant mass range from K {Mathematical expression} threshold to 2.5 GeV, is dominated by the f′(1525) resonance and an enhancement near the K {Mathematical expression} threshold. Upper limits on the product of the two-photon width times the branching ratio into K {Mathematical expression} pairs are given for Θ(1700), h(2030), and ξ(2220). For exclusive two-photon production of K^±Ks⁰π^∓ no significant signal was observed. Upper limits are given on the cross section of γγ→K⁺ {Mathematical expression}π^- or K^-K⁰π⁺ between 1.4 and 3.2 GeV and on the product of the γγ width times the branching ratio into the K {Mathematical expression}π final states for the ηc(2980) and the ι(1440), yielding Γ(γγ)→i(1440))·BR(i(1440)→K {Mathematical expression}π<2.2 keV at 95% C.L. © 1985 Springer-Verlag.

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

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