Jet Nuclear Modification Factor from the AdS/CFT Correspondence

International Workshop on Discovery Physics at the LHC

Morad, R.^1 ; Horowitz, W.A.^1

Department of Physics, University of Cape Town, Private Bag X3, Rondebosch

7701, South Africa^1

关键词: Center-of-mass energies;    Coupled calculation;    Expanding plasmas;    Heavy ion collision;    Loss of lights;    Nuclear modification factors;    Pb-Pb collisions;    Separation of scale;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/623/1/012021/pdf
DOI  :  10.1088/1742-6596/623/1/012021

来源: IOP

【 摘 要 】

We define a novel definition of the holographic light hadron jet by a separation of scales from plasma to jet, which leads to the re-emergence of the late-time Bragg peak in the instantaneous jet energy loss rate. We use the holographic energy loss of light quark and our new jet prescription in AdS/CFT to calculate the nuclear modification factor of jet for a brick of plasma (both static and expanding plasma) and compare the AdS/CFT results with the experimental data for most central Pb-Pb collision at LHC at 2.76 TeV center-of-mass energy. Defining a renormalized AdS/CFT jets that we argue better reflect QCD physics, we find a surprisingly good agreement between our toy model which is the first fully strongly coupled calculations, and preliminary jet suppression data from heavy ion collisions at LHC.