Thermal photons as a quark-gluon plasma thermometer reexamined

Physical Review C - Nuclear Physics

Volumn 89, Issue 4, 2014, Pages

  Shen, Chun ^a   Heinz, Ulrich ^a   Paquet, Jean François ^b   Gale, Charles ^c  

^a OHIO STATE UNIVERSITY   (United States)

^b MCGILL UNIVERSITY   (Canada)

^c FRANKFURT INSTITUTE FOR ADVANCED STUDIES   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84899670880     PISSN: 05562813     EISSN: 1089490X     Source Type: Journal    
DOI: 10.1103/PhysRevC.89.044910     Document Type: Article

References (53)

1. E. L. Feinberg, Nuovo Cimento A 34, 391 (1976). NCIBAW 0369-3554 10.1007/BF02728616
2. E. V. Shuryak, Phys. Lett. B 78, 150 (1978); PYLBAJ 0370-2693 10.1016/0370-2693(78)90370-2
3. E. V. Shuryak, Yad. Fiz. 28, 796 (1978)
4. E. V. Shuryak, [Sov. J. Nucl. Phys. 28, 408 (1978)].
5. K. Kajantie and H. I. Miettinen, Z. Phys. C 9, 341 (1981). ZPCFD2 0170-9739 10.1007/BF01548770
6. K. Kajantie, M. Kataja, L. D. McLerran, and P. V. Ruuskanen, Phys. Rev. D 34, 811 (1986). 0556-2821 10.1103/PhysRevD.34.811
7. S. Turbide, C. Gale, E. Frodermann, and U. Heinz, Phys. Rev. C 77, 024909 (2008). PRVCAN 0556-2813 10.1103/PhysRevC.77.024909
8. A. Adare (PHENIX Collaboration), Phys. Rev. Lett. 104, 132301 (2010) PRLTAO 0031-9007 10.1103/PhysRevLett.104.132301
9. M. Wilde (ALICE Collaboration), Nucl. Phys. A 904-905, 573c (2013). NUPABL 0375-9474 10.1016/j.nuclphysa.2013.02.079
10. Y. Aoki, Z. Fodor, S. D. Katz, and K. K. Szabo, Phys. Lett. B 643, 46 (2006). PYLBAJ 0370-2693 10.1016/j.physletb.2006.10.021
11. A. Bazavov, Phys. Rev. D 85, 054503 (2012). PRVDAQ 1550-7998 10.1103/PhysRevD.85.054503
12. H. van Hees, C. Gale, and R. Rapp, Phys. Rev. C 84, 054906 (2011). PRVCAN 0556-2813 10.1103/PhysRevC.84.054906
13. R. Rapp, Acta Phys. Pol., B 42, 2823 (2011) APOBBB 0587-4254 10.5506/APhysPolB.42.2823;
14. PoS (CPOD2013) 008.
15. C. Shen, U. Heinz, J.-F. Paquet, I. Kozlov, and C. Gale, arXiv:1308.2111;
16. C. Shen, U. Heinz, J.-F. Paquet, and C. Gale (unpublished).
17. F. Gelis, H. Niemi, P. V. Ruuskanen, and S. S. Rasanen, J. Phys. G 30, S1031 (2004). JPGPED 0954-3899 10.1088/0954-3899/30/8/053
18. T. S. Biro, E. van Doorn, B. Müller, M. H. Thoma, and X. N. Wang, Phys. Rev. C 48, 1275 (1993). PRVCAN 0556-2813 10.1103/PhysRevC.48.1275
19. H. Song and U. Heinz, Phys. Lett. B 658, 279 (2008) PYLBAJ 0370-2693 10.1016/j.physletb.2007.11.019;
20. H. Song and U. Heinz, Phys. Rev. C 77, 064901 (2008) PRVCAN 0556-2813 10.1103/PhysRevC.77.064901;
21. H. Song and U. Heinz, Phys. Rev. C 78, 024902 (2008). PRVCAN 0556-2813 10.1103/PhysRevC.78.024902
22. C. Shen, U. Heinz, P. Huovinen, and H. Song, Phys. Rev. C 82, 054904 (2010). PRVCAN 0556-2813 10.1103/PhysRevC.82.054904
23. H. Song, S. A. Bass, U. Heinz, T. Hirano, and C. Shen, Phys. Rev. Lett. 106, 192301 (2011) PRLTAO 0031-9007 10.1103/PhysRevLett.106.192301;
24. H. Song, S. A. Bass, U. Heinz, T. Hirano, and C. Shen, Phys. Rev. Lett. 109, 139904 (E) (2012) PRLTAO 0031-9007 10.1103/PhysRevLett.109.139904;
25. H. Song, S. A. Bass, U. Heinz, T. Hirano, and C. Shen, Phys. Rev. C 83, 054910 (2011) PRVCAN 0556-2813 10.1103/PhysRevC.83.054910;
26. H. Song, S. A. Bass, U. Heinz, T. Hirano, and C. Shen, Phys. Rev. C 86, 059903 (E) (2012) PRVCAN 0556-2813 10.1103/PhysRevC.86.059903.
27. C. Shen, U. Heinz, P. Huovinen, and H. Song, Phys. Rev. C 84, 044903 (2011). PRVCAN 0556-2813 10.1103/PhysRevC.84.044903
28. Z. Qiu, C. Shen, and U. Heinz, Phys. Lett. B 707, 151 (2012). PYLBAJ 0370-2693 10.1016/j.physletb.2011.12.041
29. P. Huovinen and P. Petreczky, Nucl. Phys. A 837, 26 (2010). NUPABL 0375-9474 10.1016/j.nuclphysa.2010.02.015
30. M. Klasen, C. Klein-Bösing, F. König, and J. P. Wessels, J. High Energy Phys. 10 (2013) 119. 10.1007/JHEP10(2013)119
31. C. Song, Phys. Rev. C 47, 2861 (1993). PRVCAN 0556-2813 10.1103/PhysRevC.47.2861
32. S. Turbide, R. Rapp, and C. Gale, Phys. Rev. C 69, 014903 (2004). PRVCAN 0556-2813 10.1103/PhysRevC.69.014903
33. S. Turbide, Ph.D. thesis, McGill University, 2006.
34. The minimum photon (Equation presented) at which the pQCD calculation can be made is determined by the choice of factorization, renormalization, and fragmentation scales, which are all chosen here to be equal to a constant times the photon (Equation presented). At the RHIC, this constant is chosen to be (Equation presented), yielding good agreement of the pQCD calculation with low-(Equation presented) proton-proton data from the PHENIX Collaboration. In the absence of low-(Equation presented)(Equation presented) data at the LHC, the scales were chosen to be (Equation presented). The consequence of this choice is that the minimum (Equation presented) at which the pQCD calculation can be made at the RHIC is 3.0 GeV(Equation presented), while the minimum at the LHC is 1.5 GeV(Equation presented). The fits were done using the calculated results above these values. The reliability of the specific form chosen for the extrapolation can be verified by setting the photon momentum scaling factor to a larger number (e.g., 2 instead of 1/2 or 1), which permits one to extend the pQCD calculation to lower (Equation presented). We have made sure that in such a case the calculation could still be well described by a function of the form (Equation presented).
35. M. Dion, J.-F. Paquet, B. Schenke, C. Young, S. Jeon, and C. Gale, Phys. Rev. C 84, 064901 (2011). PRVCAN 0556-2813 10.1103/PhysRevC.84.064901
36. P. Aurenche, J. Ph. Guillet, E. Pilon, M. Werlen, and M. Fontannaz, Phys. Rev. D 73, 094007 (2006). PRVDAQ 1550-7998 10.1103/PhysRevD.73.094007
37. J.-F. Paquet, M.Sc. thesis, McGill University, 2011.
38. K. J. Eskola, H. Paukkunen, and C. A. Salgado, J. High Energy Phys. 04 (2009) 065. JHEPFG 1029-8479 10.1088/1126-6708/2009/04/065
39. R. Chatterjee, H. Holopainen, I. Helenius, T. Renk, and K. J. Eskola, Phys. Rev. C 88, 034901 (2013). PRVCAN 0556-2813 10.1103/PhysRevC.88.034901
40. G.-Y. Qin, J. Ruppert, C. Gale, S. Jeon, and G. D. Moore, Phys. Rev. C 80, 054909 (2009). PRVCAN 0556-2813 10.1103/PhysRevC.80.054909
41. R. J. Fries, B. Müller, and D. K. Srivastava, Phys. Rev. Lett. 90, 132301 (2003) PRLTAO 0031-9007 10.1103/PhysRevLett.90.132301;
42. S. Turbide, C. Gale, S. Jeon, and G. D. Moore, Phys. Rev. C 72, 014906 (2005). PRVCAN 0556-2813 10.1103/PhysRevC.72.014906
43. R. Chatterjee, H. Holopainen, T. Renk, and K. J. Eskola, Phys. Rev. C 83, 054908 (2011). PRVCAN 0556-2813 10.1103/PhysRevC.83.054908
44. J. I. Kapusta, P. Lichard, and D. Seibert, Phys. Rev. D 44, 2774 (1991) 0556-2821 10.1103/PhysRevD.44.2774;
45. J. I. Kapusta, P. Lichard, and D. Seibert, Phys. Rev. D 47, 4171 (E) (1993). 0556-2821 10.1103/PhysRevD.47.4171
46. T. Hirano and K. Tsuda, Phys. Rev. C 66, 054905 (2002). PRVCAN 0556-2813 10.1103/PhysRevC.66.054905
47. O. Linnyk, W. Cassing, and E. Bratkovskaya, Phys. Rev. C 89, 034908 (2014). PRVCAN 0556-2813 10.1103/PhysRevC.89.034908
48. B. Bannier (PHENIX Collaboration), arXiv:1404.3024.
49. R. C. Hwa and K. Kajantie, Phys. Rev. D 32, 1109 (1985). 0556-2821 10.1103/PhysRevD.32.1109
50. R. Chatterjee, E. S. Frodermann, U. Heinz, and D. K. Srivastava, Phys. Rev. Lett. 96, 202302 (2006) PRLTAO 0031-9007 10.1103/PhysRevLett.96.202302;
51. U. Heinz, R. Chatterjee, E. S. Frodermann, C. Gale, and D. K. Srivastava, Nucl. Phys. A 783, 379 (2007). NUPABL 0375-9474 10.1016/j.nuclphysa.2006.11.090
52. A. Adare (PHENIX Collaboration), Phys. Rev. Lett. 109, 122302 (2012). PRLTAO 0031-9007 10.1103/PhysRevLett.109.122302
53. D. Lohner (Alice Collaboration), J. Phys.: Conf. Ser. 446, 012028 (2013). 10.1088/1742-6596/446/1/012028