A NLO analysis on fragility of dihadron tomography in high energy $AA$ collisions

Abstract

The dihadron spectra in high energy $AA$ collisions are studied within the NLO pQCD parton model with jet quenching taken into account. The high $p_T$ dihadron spectra are found to be contributed not only by jet pairs close and tangential to the surface of the dense matter but also by punching-through jets survived at the center while the single hadron high $p_T$ spectra are only dominated by surface emission. Consequently, the suppression factor of such high-$p_T$ hadron pairs is found to be more sensitive to the initial gluon density than the single hadron suppression factor.

arXiv comment4 pages, 4 figures, proceedings for the 19th international Conference on ultra-relativistic nucleus-nucleus collisions (QM2006), Shanghai, China, November 14-20, 2006

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Cited by in corpus (4)

• Bulk matter evolution and extraction of jet transport parameter in heavy-ion collisions at RHIC
• A study on the anomaly of $p$ over $\pi$ ratios in $Au+Au$ collisions with jet quenching
• Punch-through jets in $A+A$ collisions at RHIC/LHC
• Photon Radiation and Dilepton Production Induced by Rescattering in Strong Interacting Medium