Phenomenology of light quark jet quenching in AdS/CFT

Workshop for Young Scientists on the Physics of Ultrarelativistic Nucleus–Nucleus Collisions 2012

Ficnar, Andrej^1 ; Noronha, Jorge^2 ; Gyulassy, Miklos^1

Department of Physics, Columbia University, New York, NY 10027, United States^1

Instituto de Física, Universidade de São Paulo, 05315-970 São Paulo, Brazil^2

关键词: Expanding plasmas;    Higher derivatives;    Initial conditions;    Light hadrons;    Loss of lights;    Nuclear modification factors;    Path dependence;    Phenomenological modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/446/1/012002/pdf
DOI  :  10.1088/1742-6596/446/1/012002

来源: IOP

【 摘 要 】

We explore phenomenological signatures of light quark jet quenching within the AdS/CFT correspondence. Firstly, we note that the numerical studies indicate a linear path dependence of the instantaneous energy loss of light quarks modeled as falling strings. Secondly, we propose a phenomenological model for generic description of their energy loss and use it to compute the nuclear modification factor RAAfor light quarks in an expanding plasma with Glauber initial conditions. Comparing with the light hadron RAAdata at the LHC, a qualitative agreement is shown. Thirdly, we show how the observed quantitative disagreement can be partially alleviated by including the effects from higher derivative corrections to AdS5.