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Title: Production of K{sup +} and of K{sup -} mesons in heavy-ion collisions from 0.6A to 2.0A GeV incident energy

Abstract

This paper summarizes the yields and the emission patterns of K{sup +} and of K{sup -} mesons measured in inclusive C+C, Ni+Ni, and Au+Au collisions at incident energies from 0.6A to 2.0A GeV using the Kaon Spectrometer KaoS at GSI. For Ni+Ni collisions at 1.5A and at 1.93A GeV as well as for Au+Au at 1.5A GeV, detailed results are presented of the multiplicities, of the inverse slope parameters, and of the anisotropies in the angular emission patterns as a function of the collision centrality. When comparing transport-model calculations to the measured K{sup +} production yields, an agreement is only obtained for a soft nuclear equation of state (compression modulus K{sub N}{approx_equal}200 MeV). The production of K{sup -} mesons at energies around 1A to 2A GeV is dominated by the strangeness-exchange reaction K{sup -}N<-->{pi}Y (Y={lambda},{sigma}) which leads to a coupling between the K{sup -} and K{sup +} yields. However, both particle species show distinct differences in their emission patterns suggesting different freeze-out conditions for K{sup +} and K{sup -} mesons.

Authors:
;  [1]; ; ;  [2];  [3]; ; ;  [4]; ; ; ; ; ; ;  [2];  [5];  [3]; ; more »;  [6];  [6];  [7] « less
  1. Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany)
  2. Gesellschaft fuer Schwerionenforschung, D-64220 Darmstadt (Germany)
  3. (Germany)
  4. Phillips-Universitaet, D-35037 Marburg (Germany)
  5. Uniwersytet Jagiellonski, PL-30059 Krakow (Poland)
  6. Forschungszentrum Dresden-Rossendorf, D-01314 Dresden (Germany)
  7. (Germany) (and others)
Publication Date:
OSTI Identifier:
20991032
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevC.75.024906; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ANISOTROPY; EMISSION; EQUATIONS OF STATE; FREEZING OUT; GEV RANGE 01-10; HEAVY ION REACTIONS; MEV RANGE 100-1000; POTASSIUM IONS; SPECTROMETERS; STRANGENESS-EXCHANGE REACTIONS; TRANSPORT THEORY

Citation Formats

Foerster, A., Oeschler, H., Uhlig, F., Lang, S., Schmah, A., Technische Universitaet Darmstadt, D-64289 Darmstadt, Boettcher, I., Kohlmeyer, B., Menzel, M., Brill, D., Koczon, P., Laue, F., Mang, M., Schwab, E., Senger, P., Speer, J., Debowski, M., Forschungszentrum Dresden-Rossendorf, D-01314 Dresden, Dohrmann, F., Naumann, L., Scheinast, W., Grosse, E., and Technische Universitaet Dresden, D-01062 Dresden. Production of K{sup +} and of K{sup -} mesons in heavy-ion collisions from 0.6A to 2.0A GeV incident energy. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.024906.
Foerster, A., Oeschler, H., Uhlig, F., Lang, S., Schmah, A., Technische Universitaet Darmstadt, D-64289 Darmstadt, Boettcher, I., Kohlmeyer, B., Menzel, M., Brill, D., Koczon, P., Laue, F., Mang, M., Schwab, E., Senger, P., Speer, J., Debowski, M., Forschungszentrum Dresden-Rossendorf, D-01314 Dresden, Dohrmann, F., Naumann, L., Scheinast, W., Grosse, E., & Technische Universitaet Dresden, D-01062 Dresden. Production of K{sup +} and of K{sup -} mesons in heavy-ion collisions from 0.6A to 2.0A GeV incident energy. United States. doi:10.1103/PHYSREVC.75.024906.
Foerster, A., Oeschler, H., Uhlig, F., Lang, S., Schmah, A., Technische Universitaet Darmstadt, D-64289 Darmstadt, Boettcher, I., Kohlmeyer, B., Menzel, M., Brill, D., Koczon, P., Laue, F., Mang, M., Schwab, E., Senger, P., Speer, J., Debowski, M., Forschungszentrum Dresden-Rossendorf, D-01314 Dresden, Dohrmann, F., Naumann, L., Scheinast, W., Grosse, E., and Technische Universitaet Dresden, D-01062 Dresden. Thu . "Production of K{sup +} and of K{sup -} mesons in heavy-ion collisions from 0.6A to 2.0A GeV incident energy". United States. doi:10.1103/PHYSREVC.75.024906.
@article{osti_20991032,
title = {Production of K{sup +} and of K{sup -} mesons in heavy-ion collisions from 0.6A to 2.0A GeV incident energy},
author = {Foerster, A. and Oeschler, H. and Uhlig, F. and Lang, S. and Schmah, A. and Technische Universitaet Darmstadt, D-64289 Darmstadt and Boettcher, I. and Kohlmeyer, B. and Menzel, M. and Brill, D. and Koczon, P. and Laue, F. and Mang, M. and Schwab, E. and Senger, P. and Speer, J. and Debowski, M. and Forschungszentrum Dresden-Rossendorf, D-01314 Dresden and Dohrmann, F. and Naumann, L. and Scheinast, W. and Grosse, E. and Technische Universitaet Dresden, D-01062 Dresden},
abstractNote = {This paper summarizes the yields and the emission patterns of K{sup +} and of K{sup -} mesons measured in inclusive C+C, Ni+Ni, and Au+Au collisions at incident energies from 0.6A to 2.0A GeV using the Kaon Spectrometer KaoS at GSI. For Ni+Ni collisions at 1.5A and at 1.93A GeV as well as for Au+Au at 1.5A GeV, detailed results are presented of the multiplicities, of the inverse slope parameters, and of the anisotropies in the angular emission patterns as a function of the collision centrality. When comparing transport-model calculations to the measured K{sup +} production yields, an agreement is only obtained for a soft nuclear equation of state (compression modulus K{sub N}{approx_equal}200 MeV). The production of K{sup -} mesons at energies around 1A to 2A GeV is dominated by the strangeness-exchange reaction K{sup -}N<-->{pi}Y (Y={lambda},{sigma}) which leads to a coupling between the K{sup -} and K{sup +} yields. However, both particle species show distinct differences in their emission patterns suggesting different freeze-out conditions for K{sup +} and K{sup -} mesons.},
doi = {10.1103/PHYSREVC.75.024906},
journal = {Physical Review. C, Nuclear Physics},
number = 2,
volume = 75,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}