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Systematic comparison of jet energy-loss schemes in a realistic hydrodynamic medium

Publication ,  Journal Article
Bass, SA; Gale, C; Majumder, A; Nonaka, C; Qin, GY; Renk, T; Ruppert, J
Published in: Physical Review C - Nuclear Physics
February 2, 2009

We perform a systematic comparison of three different jet energy-loss approaches. These include the Armesto-Salgado-Wiedemann scheme based on the approach of Baier-Dokshitzer-Mueller-Peigne-Schiff and Zakharov (BDMPS-Z/ASW), the higher twist (HT) approach and a scheme based on the Arnold-Moore-Yaffe (AMY) approach. In this comparison, an identical medium evolution will be utilized for all three approaches: this entails not only the use of the same realistic three-dimensional relativistic fluid dynamics (RFD) simulation, but also the use of identical initial parton-distribution functions and final fragmentation functions. We are, thus, in a unique position to not only isolate fundamental differences between the various approaches but also make rigorous calculations for different experimental measurements using state of the art components. All three approaches are reduced to versions containing only one free tunable parameter, this is then related to the well-known transport parameter q. We find that the parameters of all three calculations can be adjusted to provide a good description of inclusive data on RAA vs transverse momentum. However, we do observe slight differences in their predictions for the centrality and azimuthal angular dependence of RAA vs pT. We also note that the values of the transport coefficient q in the three approaches to describe the data differ significantly. © 2009 The American Physical Society.

Duke Scholars

Published In

Physical Review C - Nuclear Physics

DOI

EISSN

1089-490X

ISSN

0556-2813

Publication Date

February 2, 2009

Volume

79

Issue

2

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

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Bass, S. A., Gale, C., Majumder, A., Nonaka, C., Qin, G. Y., Renk, T., & Ruppert, J. (2009). Systematic comparison of jet energy-loss schemes in a realistic hydrodynamic medium. Physical Review C - Nuclear Physics, 79(2). https://doi.org/10.1103/PhysRevC.79.024901
Bass, S. A., C. Gale, A. Majumder, C. Nonaka, G. Y. Qin, T. Renk, and J. Ruppert. “Systematic comparison of jet energy-loss schemes in a realistic hydrodynamic medium.” Physical Review C - Nuclear Physics 79, no. 2 (February 2, 2009). https://doi.org/10.1103/PhysRevC.79.024901.
Bass SA, Gale C, Majumder A, Nonaka C, Qin GY, Renk T, et al. Systematic comparison of jet energy-loss schemes in a realistic hydrodynamic medium. Physical Review C - Nuclear Physics. 2009 Feb 2;79(2).
Bass, S. A., et al. “Systematic comparison of jet energy-loss schemes in a realistic hydrodynamic medium.” Physical Review C - Nuclear Physics, vol. 79, no. 2, Feb. 2009. Scopus, doi:10.1103/PhysRevC.79.024901.
Bass SA, Gale C, Majumder A, Nonaka C, Qin GY, Renk T, Ruppert J. Systematic comparison of jet energy-loss schemes in a realistic hydrodynamic medium. Physical Review C - Nuclear Physics. 2009 Feb 2;79(2).

Published In

Physical Review C - Nuclear Physics

DOI

EISSN

1089-490X

ISSN

0556-2813

Publication Date

February 2, 2009

Volume

79

Issue

2

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics