Weakness or Strength in the Golden Years of RHIC and LHC?

作者：Horowitz W A^*

来源：Nuclear Physics A, 2013, 910: 239-242.

DOI：10.1016/j.nuclphysa.2012.12.041

• QCD
• Relativistic heavy-ion collisions
• Quark-gluon plasma
• Jet quenching
• Jet Tomography

Recent LHC data suggest that perturbative QCD provides a qualitatively consistent picture of jet quenching. Constrained to RHIC pi(0) suppression, zero parameter WHDG energy loss predictions agree quantitatively with the charged hadron v(2) and D meson R-AA measured at LHC and qualitatively with the h(+/-) R-AA. On the other hand, RHIC-constrained LHC predictions from fully strongly-coupled AdS/CFT qualitatively oversuppress D mesons compared to data; light meson predictions are on less firm theoretical ground but also suggest oversuppression. More detailed data from heavy, especially B, mesons will continue to help clarify our picture of the physics of the quark-gluon plasma. Since the approach of pQCD predictions to LHC data occurs at momenta greater than or similar to 15 GeV/c, a robust consistency check between pQCD and both RHIC and LHC data requires RHIC jet measurements.

• 出版日期2013-8