The Strangeness Signal in Hadron Production at Relativistic Energy

  • Reinhard Stock
Conference paper
Part of the NATO Science Series book series (NAII, volume 166)

Abstract

Strangeness enhancement is discussed as a feature specific to relativistic nuclear collisions which create a “fireball” of strongly interacting matter at high energy density. At very high energy this is suggested to be partonic matter, but at lower energy it should consist of yet unknown hadronic degrees of freedom. The freeze-out of this high density state to a hadron gas can tell us about properties of fireball matter. The hadron gas at the instant of its formation captures conditions directly at the QCD phase boundary at top SPS and RHIC energy, chiefly the critical temperature and energy density.

Keywords

Grand Canonical Ensemble Hadron Production RHIC Energy Hadron Multiplicity Strange Hadron 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
This is a preview of subscription content, log in to check access.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    A. Ukawa, Nucl. Phys. A638 (1998) 339c; E. Laerman, Nucl. Phys. A610 (1996) 1c.Google Scholar
  2. [2]
    T. Alber et al., NA49 Coll., Phys. Rev. Lett. 75 (1995) 3814.ADSCrossRefGoogle Scholar
  3. [3]
    L. Ramello et al., NA50 Coll., Nucl. Phys. A638 (1998) 26c.Google Scholar
  4. [4]
    T. Matsui and H. Satz, Phys. Lett. B178 (1986) 416; D. Kharzeev, Nucl. Phys. A638 (1998) 279c.Google Scholar
  5. [5]
    S. A. Bass, J. Phys. G28 (2002) 1543.Google Scholar
  6. [6]
    F. Karsch, Nucl. Phys. A698 (2002) 199.MATHCrossRefGoogle Scholar
  7. [7]
    M. Alford, K. Rajagopal and F. Wilczek, Phys.Lett. B422 (1998) 247.Google Scholar
  8. [8]
    A. Mischke et al., NA49, nucl-ex/0201012.Google Scholar
  9. [9]
    In order to avoid a misunderstanding I have to add that this picture of a nearly stopped fireball applies only up to SPS energy. At the ten times higher RHIC energy, is=200 GeV per nucleon pair, final phase space already looks like a fire-saussage in beam direction. However a more involved study shows that hydrodynamic equilibrium persists in each slice.Google Scholar
  10. [10]
    J. D. Bjorken, Phys. Rev. D27 (1983)140.Google Scholar
  11. [11]
    M. M Aggarwal et al., WA98, Phys. Rev. Lett. 85 (2000)Google Scholar
  12. ; G. Agakichiev et al., NA45, Phys. Lett. B422 (1998) 405.Google Scholar
  13. [12]
    J. Ellis and K. Geiger, Phys. Rev. D54 (1996) 1967.Google Scholar
  14. [13]
    V. Koch, B. Müller and J. Rafelski, Phys. Rev. 142 (1986) 167Google Scholar
  15. F. Becattini, Z. Phys. C69 (1996) 485;Google Scholar
  16. J. Letessier, J. Rafelski and A. Tounsi, Nucl. Phys. A590 (1995) 613Google Scholar
  17. R. Stock, Nucl. Phys. A661 (1999) 282Google Scholar
  18. P. Braun-Munzinger, P. Heppe anf J. Stachel, Phys. Lett. B465 (1999) 15Google Scholar
  19. J. Letessier and J. Rafelski, Hadrons and Quark-Gluon Plasma, Cambridge Univ. Press 2002.Google Scholar
  20. [14]
    R. Hagedorn, Nuovo Cimento 35 (1965) 395.Google Scholar
  21. [15]
    J. Bartke et al., NA35, Z. Phys. C48 (1990) 191Google Scholar
  22. P. Foka et al., NA35, Nucl. Phys. A583 (1995)Google Scholar
  23. T. Alber et al., NA35, Z. Phys. C64 (1994) 195.Google Scholar
  24. [16]
    B. Müller and J. Rafelski, Phys. Rev. Lett. 48 (1982) 1066Google Scholar
  25. R. Hagedorn and J. R.felski, Phys. Lett. 97B (1980) 180.Google Scholar
  26. [17]
    S. V. Afanasiev et al., NA49, Nucl. Phys. A698 (2002) 104.CrossRefGoogle Scholar
  27. [18]
    C. Höhne et al., NA49, Nucl. Phys. A661 (1999) 485; J. Bächler et al., NA49, ibidem p 45.Google Scholar
  28. [19]
    F. Sikler, hep-ex/0102004.Google Scholar
  29. [20]
    F. Friese et al., NA49, Nucl. Phys. A698 (2002) 487.CrossRefGoogle Scholar
  30. [21]
    L. Ahle et al., E802, Phys. Rev.C60 (1999) 044904.Google Scholar
  31. [22]
    S. V. Afanasiev et al., NA49, Nucl. Phys. A715 (2003) 161.CrossRefGoogle Scholar
  32. [23]
    F. Antinori et al., WA97/NA57, Nucl. Phys. A698 (2002) 118.Google Scholar
  33. [24]
    C. Höhne (NA49), PhD thesis, Marburg University 2003.Google Scholar
  34. [25]
    T. Alexopoulos et al., E735 Coll., Nucl. Phys. A498 (1989)181Google Scholar
  35. [26]
    B. Cole, Nucl. Phys. A661 (1999) 366.CrossRefGoogle Scholar
  36. [27]
    T. Susa et al., NA49, Nucl. Phys. A698 (2002) 491.CrossRefGoogle Scholar
  37. [28]
    H. G. Fischer, Nucl. Phys. A715 (2003) 118.CrossRefGoogle Scholar
  38. [29]
    T. Susa et al., NA49, to be published; G. I. Veres et al., NA49, Nucl. Phys. A661 (1999) 383Google Scholar
  39. D. Barna PhD thesis, Budapest 2002.Google Scholar
  40. [30]
    F. Becattini, J. of Physics G28 (2002) 1553.CrossRefGoogle Scholar
  41. [31]
    F. Becattini, M. Gazdzicki and J. Sollfrank, Nucl. Phys. A638 (1998) 403Google Scholar
  42. J. Cleymans and K. Redlich, Phys. Rev. Lett. 81 (1998) 5284.Google Scholar
  43. [32]
    R. Hagedorn, Nucl. Phys. B24 (1979) 93.ADSCrossRefGoogle Scholar
  44. [33]
    R. Stock, Phys. Lett. B456 (1999) 277; U. Heinz, Nucl. Phys. A661 (1999) 140.Google Scholar
  45. [34]
    F. Becattini and L. Ferroni, hep-ph/030706.Google Scholar
  46. [35]
    P. Braun-Munzinger, I. Heppe and J. Stachel, Phys. Lett. B465 (1999) 15.Google Scholar
  47. [36]
    L. S. Barnby et al., STAR, J. of Physics G28 (2002) 1535.Google Scholar
  48. [37]
    P. Braun-Munzinger, D. Magestro and J. Stachel, ibidem p. 1745, and Phys. Lett. B518 (2001) 41.CrossRefGoogle Scholar
  49. [38]
    N. Xu and M. Kaneta, Nucl. Phys. A 698 (2002) 306.ADSCrossRefGoogle Scholar
  50. [39]
    P. Seyboth, Proc. ICPAQGP, Jaipur 2001, to be published by Ind. Acad. Science; T. Kollegger, NA49, J. of Physics G28 (2002) 1689; nucl-ex/0201019.Google Scholar
  51. [40]
    S. V. Afanasiev et al., NA49 Coll., Phys. Rev. C66 (2002) 054902.Google Scholar
  52. [41]
    F. Becattini et al., hep-ph/0310049.Google Scholar
  53. [42]
    Z. Fodor and S. Katz, hep-lat/0106002.Google Scholar
  54. [43]
    R. Stock, Nucl. Phys. A661 (1999) 282.CrossRefGoogle Scholar
  55. [44]
    K. Geiger and D. Srivastava, Phys. Rev. C56 (1997) 2718.Google Scholar
  56. [45]
    J. S. Hamieh, K. Redlich and A. Tounsi, Phys. Lett. B486 (2000) 61Google Scholar
  57. J. Cleymans et al., Phys. Rev. C56 (1997) 2747.Google Scholar
  58. [46]
    A. Tounsi and K. Redlich, hep-ph/0111159, and J. of Physics G28 (2002) 2095.ADSGoogle Scholar
  59. [47]
    J. Stachel, Nucl. Phys. A610 (1996) 509.CrossRefGoogle Scholar
  60. [48]
    H. W. Bartz et al., Phys. Rev. D40 (1989) 157.ADSGoogle Scholar
  61. [49]
    H. Appelshäuser et al., NA49, Eur. J. Phys. C2 (1998) 661.Google Scholar
  62. [50]
    A. K. Wroblewski, Acta Phys. Pol. B16 (1985) 379.Google Scholar
  63. [51]
    C. Höhne et al., NA49 Coll., Nucl. Phys. A715 (2003) 474.Google Scholar
  64. [52]
    UrQMD version 3.1, H. Weber, Thesis Frankfurt 2002.Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  • Reinhard Stock
    • 1
  1. 1.Johann Wolfgang Goethe-UniversityFrankfurt am MainGermany

Personalised recommendations