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JETP Letters

, 93:683 | Cite as

Variation of jet quenching from RHIC to LHC and thermal suppression of the QCD coupling constant

  • B. G. Zakharov
Fields, Particles, and Nuclei

Abstract

We perform a joint jet tomographic analysis of the data on the nuclear modification factor R AA from PHENIX at RHIC and ALICE at LHC. The computations are performed accounting for radiative and collisional parton energy loss with running coupling constant. Our results show that the observed slow variation of R AA from RHIC to LHC indicates that the QCD coupling constant is suppressed in the quark-gluon plasma produced at LHC.

Keywords

JETP Letter Fragmentation Function Gluon Emission Parton Energy Loss Collisional Energy Loss 
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.

References

  1. 1.
    P. M. Jacobs and M. van Leeuwen, Nucl. Phys. A 774, 237 (2006).ADSCrossRefGoogle Scholar
  2. 2.
    K. Aamodt et al. (ALICE), Phys. Lett. B 696, 30 (2011), arXiv:1012.1004 [nucl-ex].ADSCrossRefGoogle Scholar
  3. 3.
    R. Baier, Y. L. Dokshitzer, A. H. Mueller, et al., Nucl. Phys. B 483, 291 (1997); Nucl. Phys. B 484, 265 (1997); R. Baier, Y. L. Dokshitzer, A. H. Mueller, and D. Schiff, Nucl. Phys. B 531, 403 (1998).ADSCrossRefGoogle Scholar
  4. 4.
    B. G. Zakharov, JETP Lett. 63, 952 (1996); JETP Lett. 65, 615 (1997); JETP Lett. 70, 176 (1999); Phys. At. Nucl. 61, 838 (1998).ADSCrossRefGoogle Scholar
  5. 5.
    R. Baier, D. Schiff, and B. G. Zakharov, Ann. Rev. Nucl. Part. 50, 37 (2000), arXiv:hep-ph/0002198.ADSCrossRefGoogle Scholar
  6. 6.
    U. A. Wiedemann, Nucl. Phys. A 690, 731 (2001).ADSCrossRefGoogle Scholar
  7. 7.
    M. Gyulassy, P. Levai, and I. Vitev, Nucl. Phys. B 594, 371 (2001).ADSzbMATHCrossRefGoogle Scholar
  8. 8.
    P. Arnold, G. D. Moore, and L. G. Yaffe, J. High Energy Phys. 0206, 030 (2002).MathSciNetADSCrossRefGoogle Scholar
  9. 9.
    B. G. Zakharov, JETP Lett. 86, 444 (2007), arXiv:0708.0816 [hep-ph].ADSCrossRefGoogle Scholar
  10. 10.
    R. Baier, Yu. L. Dokshitzer, A. H. Mueller, and D. Schiff, J. High Energy Phys. 0109, 033 (2001).ADSCrossRefGoogle Scholar
  11. 11.
    A. Adare et al., Phys. Rev. Lett. 101, 232301 (2008).ADSCrossRefGoogle Scholar
  12. 12.
    S. S. Adler et al., Phys. Rev. C 71, 034908 (2005).ADSCrossRefGoogle Scholar
  13. 13.
    K. Aamodt et al. (ALICE Collab.), Phys. Rev. Lett. 105, 252301 (2010).ADSCrossRefGoogle Scholar
  14. 14.
    K. Aamodt et al. (ALICE Collab.), Phys. Rev. Lett. 106, 032301 (2011).ADSCrossRefGoogle Scholar
  15. 15.
    B. G. Zakharov, JETP Lett. 88, 781 (2008), arXiv:0811.0445 [hep-ph].ADSCrossRefGoogle Scholar
  16. 16.
    T. Sjostrand, L. Lonnblad, S. Mrenna, and P. Skands, arXiv:hep-ph/0308153.Google Scholar
  17. 17.
    S. Kretzer, H. L. Lai, F. Olness, and W. K. Tung, Phys. Rev. D 69, 114005 (2004).ADSCrossRefGoogle Scholar
  18. 18.
    K. J. Eskola, V. J. Kolhinen, and C. A. Salgado, Eur. Phys. J. C 9, 61 (1999).ADSGoogle Scholar
  19. 19.
    B. A. Kniehl, G. Kramer, and B. Potter, Nucl. Phys. B 582, 514 (2000).ADSCrossRefGoogle Scholar
  20. 20.
    B. G. Zakharov, JETP Lett. 80, 617 (2004), arXiv:hep-ph/0410321.ADSCrossRefGoogle Scholar
  21. 21.
    P. Levai and U. Heinz, Phys. Rev. C 57, 1879 (1998).ADSCrossRefGoogle Scholar
  22. 22.
    O. Kaczmarek and F. Zantow, Phys. Rev. D 71, 114510 (2005).ADSCrossRefGoogle Scholar
  23. 23.
    N. N. Nikolaev and B. G. Zakharov, Phys. Lett. B 327, 149 (1994).ADSCrossRefGoogle Scholar
  24. 24.
    Yu. L. Dokshitzer, V. A. Khoze, and S. I. Troyan, Phys. Rev. D 53, 89 (1996).ADSCrossRefGoogle Scholar
  25. 25.
    J. D. Bjorken, Fermilab preprint 82/59-THY (1982, unpublished).Google Scholar
  26. 26.
    J. D. Bjorken, Phys. Rev. D 27, 140 (1983).ADSCrossRefGoogle Scholar
  27. 27.
    T. Hirano, U. W. Heinz, D. Kharzeev, et al., Phys. Lett. B 636, 299 (2006).ADSCrossRefGoogle Scholar
  28. 28.
    B. Müller and K. Rajagopal, Eur. Phys. J. C 43, 15 (2005).ADSCrossRefGoogle Scholar
  29. 29.
    W. A. Horowitz and M. Gyulassy, arXiv:1104.4958[hep-ph].Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • B. G. Zakharov
    • 1
  1. 1.Landau Institute for Theoretical PhysicsRussian Academy of SciencesMoscowRussia

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