Extracting $\hat{q}$ from single inclusive data at RHIC and at the LHC for different centralities: a new puzzle? - INSPIRE

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Extracting $\hat{q}$ from single inclusive data at RHIC and at the LHC for different centralities: a new puzzle?

Dec 20, 2016

4 pages

Part of Proceedings, 8th International Conference on Hard and Electromagnetic Probes of High-energy Nuclear Collisions: Hard Probes 2016 (HP2016) : Wuhan, Hubei, China, September 23-27, 2016, 105-108

Published in:

Nucl.Part.Phys.Proc. 289-290 (2017) 105-108

Contribution to:

- HP2016
, 105-108

Published: Aug, 2017

e-Print:

1612.06781 [nucl-th]

DOI:

10.1016/j.nuclphysbps.2017.05.020

View in:

ADS Abstract Service

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Abstract: (Elsevier)

We present here an extraction of the jet transport coefficient, q̂ , using RHIC and LHC single-inclusive high- p T data for different centralities. We fit a K -factor that determines the deviation of this coefficient from an ideal estimate, K≡q̂/(2ϵ3/4) , where ϵ is given by hydrodynamic simulations. As obtained already in previous studies, this K -factor is found to be larger at RHIC than at the LHC. However it is, unexpectedly, basically no-dependent on the centrality of the collision. Taken at face value this result, the K -factor would not depend on local properties of the QGP as temperature, but on global collision variables such as the center of mass energy.

Note:

4 pages, 4 figures, proceedings for the 8th International Conference on Hard and Electromagnetic Probes of High-energy Nuclear Collisions (Hard Probes 2016)

quark gluon: plasma
transverse momentum: high
inclusive reaction
Brookhaven RHIC Coll
CERN LHC Coll
transport theory
hydrodynamics
temperature
numerical calculations

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