当前位置: X-MOL 学术J. Phys. G Nucl. Partic. Phys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Updated analysis of jet quenching at RHIC and LHC within the light cone path integral approach
Journal of Physics G: Nuclear and Particle Physics ( IF 3.5 ) Pub Date : 2021-04-28 , DOI: 10.1088/1361-6471/abc5fc
B G Zakharov

We present results of a detailed analysis of experimental data on the nuclear modification factor R AA and the flow coefficient v 2 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 α s 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 χ 2 optimized values of ${\alpha }_{\mathrm{s}}^{\mathrm{f}\mathrm{r}}$, the theoretical predictions are in reasonable agreement with data on R AA and v 2. 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.



中文翻译:

更新了光锥路径积分法中 RHIC 和 LHC 的射流淬火分析

我们展示了对RHIC 的 0.2 TeV Au + Au 碰撞和 LHC 的 2.76 和 5.02 TeV Pb + Pb 和 5.44 TeV 轻强子的核修饰因子R AA和流动系数v 2的实验数据的详细分析结果Xe + Xe 碰撞。我们在光锥路径积分 (LCPI) 方法中执行计算以诱导胶子发射。我们使用运行α s,它在某个值的低动量下被冻结${\alpha }_{\mathrm{s}}^{\mathrm{f}\mathrm{r}}$。我们发现 RHIC 数据支持稍大的 值${\alpha }_{\mathrm{s}}^{\mathrm{f}\mathrm{r}}$。对于 的χ 2优化值${\alpha }_{\mathrm{s}}^{\mathrm{f}\mathrm{r}}$,理论预测与R AAv 2。对 QGP 的不同形成时间和寿命进行的计算表明,RHIC 和 LHC 能量下的射流淬火对 QCD 物质演化的初始和最后阶段仅微弱敏感。

更新日期:2021-04-28
down
wechat
bug