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Centrality dependence of particle production at RHIC and the combinational approach

  • Bhaskar De
  • S. Bhattacharyya
Article

Abstract.

The newly proposed combinational approach, called the grand combination of models (GCM), as will be described in detail in the text, is still under our careful scrutiny. By applying it, we have attempted to analyze here the characteristics of both the transverse momentum (\(p_{\rm {T}}\))-, and centrality dependence of the production of the main varieties of the secondaries measured in AuAu collisions at BNL-RHIC at both \(\sqrt{s_{{NN}}} = 130\) GeV and \(\sqrt{s_{{NN}}} = 200\) GeV by PHENIX Collaboration. Besides, with the help of it, we have also investigated the nature of the centrality dependence of the average transverse momenta of the various major categories of particles in AuAu collisions at RHIC. The model seems to survive quite smoothly the acid tests of the latest PHENIX data, as it accommodates data modestly well on these twin aspects. The study reveals a kind of universality of nature of the hadronic secondaries and also of the basic particle and nuclear interactions at high energies. However, in the end, we precisely point out both the strengths and limitations of the specific model under consideration here.

Keywords

Transverse Momentum Specific Model Careful Scrutiny Main Variety Major Category 
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.

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References

  1. 1.
    PHENIX Collaboration (T. Chujo), talk presented at Quark Matter 2002, Proceedings of the 16th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions, Nantes, France, 18-24 July 2002, edited by H. Gutbrod, J. Aichelin, K. Werner, Nucl. Phys. A 715, 151 (2003) and references therein, nucl-ex/0209027, http:// www.phenix.bnl.gov/WWW/publish/chujo/presentation/QM2002\(\_\)chujo\(\_\)v2.pdf.CrossRefGoogle Scholar
  2. 2.
    PHENIX Collaboration (S. Mioduszewski), talk presented at Quark Matter 2002, Proceedings of the 16th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions, Nantes, France, 18-24 July 2002, edited by H. Gutbrod, J. Aichelin, K. Werner, Nucl. Phys. A 715, 199 (2003), nucl-ex/0210021.CrossRefGoogle Scholar
  3. 3.
    PHENIX Collaboration (J. Jia), talk presented at Quark Matter 2002, Proceedings of the 16th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions, Nantes, France, 18-24 July 2002, edited by H. Gutbrod, J. Aichelin, K. Werner, Nucl. Phys. A 715, 769 (2003), nucl-ex/0209029, http://www.phenix. bnl.gov/WWW/publish/jjia/qm02.pdf.CrossRefGoogle Scholar
  4. 4.
    STAR Collaboration (C. Adler), Phys. Rev. Lett. 89, 202301 (2002).CrossRefGoogle Scholar
  5. 5.
    PHENIX Collaboration (J.M.B. Hoy), PhD Thesis, State University of New York at Stony Brook (http://www.phenix.bnl.gov/thesis.html).Google Scholar
  6. 6.
    M.A. Faessler, Phys. Rep. 115, 1 (1984).CrossRefGoogle Scholar
  7. 7.
    T. Peitzmann, Phys. Lett. B 450, 7 (1999).CrossRefGoogle Scholar
  8. 8.
    H.R. Schmidt, J. Schukraft, J. Phys. G 19, 1705 (1993).CrossRefGoogle Scholar
  9. 9.
    R. Hagedorn, Riv. Nuovo Cimento 6, 1 (1983).MATHGoogle Scholar
  10. 10.
    WA98 Collaboration (M.M. Aggarwal), Eur. Phys. J. C 23, 225 (2002).CrossRefGoogle Scholar
  11. 11.
    WA80 Collaboration (R. Albrecht), Eur. Phys. J. C 5, 255 (1998).CrossRefGoogle Scholar
  12. 12.
    D. Antreasyan, Phys. Rev. D 19, 764 (1979).CrossRefGoogle Scholar
  13. 13.
    S. Bhattacharyya, Lett. Nuovo Cimento 44, 119 (1985).Google Scholar
  14. 14.
    Bhaskar De, S. Bhattacharyya, P. Guptaroy, J. Phys. G 28, 2963 (2002).CrossRefGoogle Scholar
  15. 15.
    Bhaskar De, S. Bhattacharyya, to be published in Int. J. Mod. Phys. A, hep-ph/0306089.Google Scholar
  16. 16.
    Bhaskar De, S. Bhattacharyya, P. Guptaroy, Eur. Phys. J. A 16, 415 (2003).Google Scholar
  17. 17.
    Bhaskar De, S. Bhattacharyya, Mod. Phys. Lett. A 18, 1383 (2003), nucl-th/0211031.CrossRefGoogle Scholar
  18. 18.
    R.C. Hwa, C.B. Yang, Phys. Rev. C 67, 034902 (2003).CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  1. 1.Physics and Applied Mathematics Unit (PAMU)Indian Statistical InstituteKolkataIndia

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