Updated analysis of jet quenching at RHIC and LHC within the light cone path integral approach
Abstract
We present results of a detailed analysis of experimental data on the nuclear modification factor RAA and the flow coefficient v2 for light hadrons from RHIC for 0.2 TeV Au + Au collisions and from LHC for 2.76 and 5.02 TeV Pb + Pb, and 5.44 TeV Xe + Xe collisions. We perform calculations within the light-cone path integral (LCPI) approach to induced gluon emission. We use running αs which is frozen at low momenta at some value ${\alpha }_{\mathrm{s}}^{\mathrm{f}\mathrm{r}}$ . We find that the RHIC data support somewhat larger value of ${\alpha }_{\mathrm{s}}^{\mathrm{f}\mathrm{r}}$ . For the χ2 optimized values of ${\alpha }_{\mathrm{s}}^{\mathrm{f}\mathrm{r}}$ , the theoretical predictions are in reasonable agreement with data on RAA and v2. Calculations made for different formation times and life-times of the QGP show that jet quenching at the RHIC and LHC energies is only weakly sensitive to the initial and final stages of the QCD matter evolution.
- Publication:
-
Journal of Physics G Nuclear Physics
- Pub Date:
- May 2021
- DOI:
- 10.1088/1361-6471/abc5fc
- arXiv:
- arXiv:2007.09772
- Bibcode:
- 2021JPhG...48e5009Z
- Keywords:
-
- heavy ion collisions;
- jet quenching;
- quark gluon plasma;
- High Energy Physics - Phenomenology;
- Nuclear Theory
- E-Print:
- 26 pages, 12 figures. Accepted in J.Phys. G