Published June 2016 | Version v1
Journal article Metadata-only

Strange meson production in Al+Al collisions at 1.9 A GeV

Creators

  • 1. Technische Universitaet Muenchen, Physik Department E62, Garching (Germany)
  • 2. Excellence Cluster ''Origin and Structure of the Universe'', Garching (Germany)
  • 3. University of Warsaw, Institute of Experimental Physics, Faculty of Physics, Warsaw (Poland)
  • 4. Physikalisches Institut der Universitaet Heidelberg, Heidelberg (Germany)
  • 5. GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Darmstadt (Germany)
  • 6. Universite Blaise Pascal, Laboratoire de Physique Corpusculaire, IN2P3/CNRS, Clermont-Ferrand (France)
  • 7. Ruder Boskovic Institute, Zagreb (Croatia)
  • 8. Oesterreichische Akademie der Wissenschaften, Stefan-Meyer-Institut fuer subatomare Physik, Wien (Austria)
  • 9. University of Split, Split (Croatia)
  • 10. Wigner RCP, RMKI, Budapest (Hungary)
  • 11. Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)
  • 12. Korea University, Seoul (Korea, Republic of)
  • 13. National Centre for Nuclear Research, Otwock-Swierk (Poland)
  • 14. Helmholtz-Zentrum Dresden-Rossendorf, Institut fuer Strahlenphysik, Dresden (Germany)
  • 15. Harbin Institute of Technology, Harbin (China)
  • 16. National Research Centre ''Kurchatov Institute'', Moscow (Russian Federation)
  • 17. Institute for Nuclear Physics and Engineering, Bucharest (Romania)
  • 18. Institut Pluridisciplinaire Hubert Curien and Universite de Strasbourg, Strasbourg (France)
  • 19. Tsinghua University, Department of Physics, Beijing (China)
  • 20. Chinese Academy of Sciences, Institute of Modern Physics, Lanzhou (China)

Description

The production of K+, K- and φ (1020) mesons is studied in Al+Al collisions at a beam energy of 1.9A GeV which is close to or below the production threshold in NN reactions. Inverse slopes, anisotropy parameters, and total emission yields of K± mesons are obtained. A comparison of the ratio of kinetic energy distributions of K- and K+ mesons to the HSD transport model calculations suggests that the inclusion of the in-medium modifications of kaon properties is necessary to reproduce the ratio. The inverse slope and total yield of φ mesons are deduced. The contribution to K- production from φ meson decays is found to be [17±3(stat)+2-7(syst)] %. The results are in line with the previous K± and φ data obtained for different colliding systems at similar incident beam energies. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epja/i2016-16177-y

Additional details

Identifiers

DOI
10.1140/epja/i2016-16177-y;

Publishing Information

Journal Title
European Physical Journal. A
Journal Volume
52
Journal Issue
6
Series
Topical issue on the 3-D structure of the nucleon
Journal Page Range
p. 1-13
ISSN
1434-6001

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
47097884
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ALUMINIUM 27 REACTIONS; ALUMINIUM 27 TARGET; ANGULAR DISTRIBUTION; BRANCHING RATIO; DEEP INELASTIC HEAVY ION REACTIONS; ENERGY SPECTRA; EXPERIMENTAL DATA; GEV RANGE 10-100; HADRONIC PARTICLE DECAY; KAONS MINUS; KAONS PLUS; MINUS-PLUS RATIO; NUCLEAR TEMPERATURE; PARTICLE PRODUCTION; PHI-1020 MESONS; RELATIVISTIC RANGE
Descriptors DEC
BOSONS; DATA; DECAY; DIMENSIONLESS NUMBERS; DISTRIBUTION; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; HADRONS; HEAVY ION REACTIONS; INFORMATION; KAONS; MESONS; NUCLEAR REACTIONS; NUMERICAL DATA; PARTICLE DECAY; PHI MESONS; PSEUDOSCALAR MESONS; SPECTRA; STRANGE MESONS; STRANGE PARTICLES; TARGETS; VECTOR MESONS