Close-to-threshold data on the elementary kaon and antikaon production channels in the proton-proton interaction have been taken using the COSY-11 installation at the cooler synchrotron COSY Jülich. The experimental technique applied at the internal COSY-11 facility—designed for meson production studies at small excess energies—is outlined. The threshold excitation functions for the kaon-hyperon production via the reactions and are presented. The magnitude of the production amplitudes is compared at equal excess energies and physical implications of the observed suppression in the threshold region are discussed. In addition, within a Dalitz plot analysis the spin-averaged S-wave scattering parameters could be extracted for the Λ-p channel. With the possibility of detecting all final state particles the elementary antikaon production in the reaction has been investigated. Results on the exclusive total cross section fix the scale of the strangeness dissociation into two kaons.
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1 June 2000
NUCLEAR PHYSICS AT STORAGE RINGS: Fourth International Conference - STORI99
12-16 Sep 1999
Bloomington, Indiana (USA)
Research Article|
June 01 2000
Hyperon and charged kaon pair production close to threshold
M. Wolke;
M. Wolke
1Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
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H.-H. Adam;
H.-H. Adam
2Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany
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J. T. Balewski;
J. T. Balewski
1Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
3Institute of Nuclear Physics, PL-31-342 Cracow, Poland
4Indiana University Cooler Facility, Bloomington, Indiana 47405
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A. Budzanowski;
A. Budzanowski
3Institute of Nuclear Physics, PL-31-342 Cracow, Poland
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C. Goodman;
C. Goodman
4Indiana University Cooler Facility, Bloomington, Indiana 47405
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D. Grzonka;
D. Grzonka
1Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
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L. Jarczyk;
L. Jarczyk
5Institute of Physics, Jagellonian University, PL-30-059 Cracow, Poland
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M. Jochmann;
M. Jochmann
6Zentrallabor für Elektronik, Forschungszentrum Jülich, D-52425 Jülich, Germany
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A. Khoukaz;
A. Khoukaz
2Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany
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K. Kilian;
K. Kilian
1Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
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M. Köhler;
M. Köhler
6Zentrallabor für Elektronik, Forschungszentrum Jülich, D-52425 Jülich, Germany
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P. Kowina;
P. Kowina
7Institute of Physics, University of Silesia, PL-40-007 Katowice, Poland
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T. Lister;
T. Lister
2Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany
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P. Moskal;
P. Moskal
1Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
5Institute of Physics, Jagellonian University, PL-30-059 Cracow, Poland
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N. Lang;
N. Lang
2Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany
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W. Oelert;
W. Oelert
1Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
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C. Quentmeier;
C. Quentmeier
2Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany
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R. Santo;
R. Santo
2Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany
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G. Schepers;
G. Schepers
1Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
2Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany
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U. Seddik;
U. Seddik
8Egyptian Atomic Energy Authority, 13759 Cairo, Egypt
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T. Sefzick;
T. Sefzick
1Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
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S. Sewerin;
S. Sewerin
1Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
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M. Siemaszko;
M. Siemaszko
7Institute of Physics, University of Silesia, PL-40-007 Katowice, Poland
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J. Smyrski;
J. Smyrski
5Institute of Physics, Jagellonian University, PL-30-059 Cracow, Poland
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A. Strzałkowski;
A. Strzałkowski
5Institute of Physics, Jagellonian University, PL-30-059 Cracow, Poland
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P. Wüstner;
P. Wüstner
6Zentrallabor für Elektronik, Forschungszentrum Jülich, D-52425 Jülich, Germany
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W. Zipper
W. Zipper
7Institute of Physics, University of Silesia, PL-40-007 Katowice, Poland
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AIP Conf. Proc. 512, 143–156 (2000)
Citation
M. Wolke, H.-H. Adam, J. T. Balewski, A. Budzanowski, C. Goodman, D. Grzonka, L. Jarczyk, M. Jochmann, A. Khoukaz, K. Kilian, M. Köhler, P. Kowina, T. Lister, P. Moskal, N. Lang, W. Oelert, C. Quentmeier, R. Santo, G. Schepers, U. Seddik, T. Sefzick, S. Sewerin, M. Siemaszko, J. Smyrski, A. Strzałkowski, P. Wüstner, W. Zipper; Hyperon and charged kaon pair production close to threshold. AIP Conf. Proc. 1 June 2000; 512 (1): 143–156. https://doi.org/10.1063/1.1291435
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