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Direct comparison of phase-space distributions of K- and K+ mesons in heavy-ion collisions at SIS energies -- evidence for in-medium modifications of kaons?

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Abstract:

The ratio of K- to K+-meson yields has been measured in the systems 96Ru + 96Ru at 1.69 A GeV, 96Ru+96Zr at 1.69 A GeV, and 58Ni+58Ni at 1.93 A GeV incident beam kinetic energy. The yield ratio is observed to vary across the measured phase space. Relativistic transport-model calculations indicate that the data are best understood if in-medium modifications of the kaons are taken into account.

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Authors and Affiliations

  1. Gesellschaft für Schwerionenforschung, Darmstadt, Germany, , , , , , DE

    K. Wiśniewski, N. Herrmann, A. Andronic, R. Averbeck, A. Devismes, C. Finck, A. Gobbi, O. Hartmann, K.D. Hildenbrand, P. Koczon, T. Kress, R. Kutsche, Y. Leifels, W. Reisdorf & D. Schüll

  2. Institute of Experimental Physics, Warsaw University, Poland, , , , , , PL

    M. Kirejczyk, M. Kowalczyk, B. Sikora & K. Siwek-Wilczyńska

  3. Laboratoire de Physique Corpusculaire, IN2P3/CNRS and Université Blaise Pascal, Clermont-Ferrand, France, , , , , , FR

    P. Crochet, J.P. Alard, V. Barret, N. Bastid, A. Bendarag & P. Dupieux

  4. Physikalisches Institut der Universität Heidelberg, Heidelberg, Germany, , , , , , DE

    M. Eskef, H. Merlitz, S. Mohren, D. Pelte & M. Stockmeier

  5. National Institute for Nuclear Physics and Engineering, Bucharest, Romania, , , , , , RO

    D. Moisa, M. Petrovici, V. Simion & G. Stoicea

  6. Rudjer Boskovic Institute, Zagreb, Croatia, , , , , , HR

    Z. Basrak, R. Čaplar, N. Cindro, M. Dželalija & M. Korolija

  7. Institute for Theoretical and Experimental Physics, Moscow, Russia, , , , , , RU

    I. Belyaev, Y. Grishkin, A. Lebedev, V. Smolyankin, A. Somov & A. Zhilin

  8. KFKI Research Institute for Particle and Nuclear Physics, Budapest, Hungary, , , , , , HU

    G. Berek, Z. Fodor, J. Kecskemeti & Z. Seres

  9. Korea University, Seoul, South Korea, , , , , , KR

    B. Hong, Y.J. Kim, K.S. Lee, K.S. Sim & J.T. Yang

  10. Forschungszentrum Rossendorf, Dresden, Germany, , , , , , DE

    R. Kotte, W. Neubert, C. Plettner & D. Wohlfarth

  11. Kurchatov Institute, Moscow, Russia, , , , , , RU

    V. Manko, A. Nianine, M. Vasiliev & I. Yushmanov

  12. Institut de Recherches Subatomiques, IN2P3-CNRS and Université Louis Pasteur, Strasbourg, France, , , , , , FR

    F. Rami, B. de Schauenburg & P. Wagner

Authors
  1. K. Wiśniewski
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  2. P. Crochet
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  3. N. Herrmann
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  4. A. Andronic
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  5. R. Averbeck
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  6. A. Devismes
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  7. C. Finck
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  8. A. Gobbi
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  9. O. Hartmann
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  10. K.D. Hildenbrand
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  11. P. Koczon
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  12. T. Kress
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  13. R. Kutsche
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  14. Y. Leifels
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  15. W. Reisdorf
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  16. D. Schüll
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  17. J.P. Alard
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  18. V. Barret
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  19. Z. Basrak
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  20. N. Bastid
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  21. I. Belyaev
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  22. A. Bendarag
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  23. G. Berek
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  24. R. Čaplar
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  25. N. Cindro
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  26. P. Dupieux
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  27. M. Dželalija
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  28. M. Eskef
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  29. Z. Fodor
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  30. Y. Grishkin
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  31. B. Hong
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  32. J. Kecskemeti
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  33. Y.J. Kim
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  34. M. Kirejczyk
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  35. M. Korolija
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  36. R. Kotte
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  37. M. Kowalczyk
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  38. A. Lebedev
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  39. K.S. Lee
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  40. V. Manko
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  41. H. Merlitz
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  42. S. Mohren
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  43. D. Moisa
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  44. W. Neubert
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  45. A. Nianine
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  46. D. Pelte
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  47. M. Petrovici
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  48. C. Plettner
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  49. F. Rami
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  50. B. de Schauenburg
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  51. Z. Seres
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  52. B. Sikora
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  53. K.S. Sim
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  54. V. Simion
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  55. K. Siwek-Wilczyńska
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  56. V. Smolyankin
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  57. A. Somov
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  58. M. Stockmeier
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  59. G. Stoicea
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  60. M. Vasiliev
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  61. P. Wagner
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  62. D. Wohlfarth
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  63. J.T. Yang
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  64. I. Yushmanov
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  65. A. Zhilin
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Consortia

The FOPI Collaboration

Additional information

Received: 30 November 1998 / Accepted: 20 December 2000

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Wiśniewski, K., Crochet, P., Herrmann, N. et al. Direct comparison of phase-space distributions of K- and K+ mesons in heavy-ion collisions at SIS energies -- evidence for in-medium modifications of kaons?. Eur Phys J A 9, 515–519 (2000). https://doi.org/10.1007/s100500070008

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  • DOI: https://doi.org/10.1007/s100500070008

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