Competition of Heavy Quark Radiative and Collisional Energy Loss in Deconfined Matter

快性与碰撞性中微子味不稳定性在非均匀系统中的动态竞争与碰撞阻尼

Dynamic Competition of Fast and Collisional Neutrino Flavor Instabilities with Collisional Damping in Spatially Inhomogeneous Systems

研究快性与碰撞性中微子味不稳定性在非均匀环境中与碰撞阻尼的动态竞争，揭示碰撞阻尼对集体味振荡动态的显著影响，发现系统最终趋于相同味平衡态。

Collisional dissociation of heavy mesons in dense QCD matter

In the framework of the reaction operator approach we calculate and resum the multiple elastic scattering of a fast $q \bar{q}$ system traversing dense nuclear matter. We derive the collisional broadening of the meson's transverse momentum and the distortion of its intrinsic light cone wave function. The medium-induced dissociation probability of heavy mesons is shown to be sensitive to the opacity of the quark-gluon plasma and the time dependence of its formation and evolution. We solve the system of coupled rate equations that describe the competition between the fragmentation of $c$- and $b…

重新审视色退禁闭介质内粲夸克与底夸克的能量损失

Reexamining charm versus bottom quark energy loss inside a color-deconfined medium

该研究通过包含汤川与弦型相互作用的线性玻尔兹曼输运模型，重新检验重夸克能量损失规律，发现底夸克与粲夸克的能量损失、核修正存在横动量依赖的反转层级，解释了低横动量下的实验观测并预言高横动量下的相反顺序。

The role of the stochastic color field fluctuations on $J/ψ$ suppression in ultra-relativistic heavy-ion collisions

We consider the effect of the stochastic color field fluctuations in addition to the collisional as well as the radiative energy losses in the propagation of charm quarks in the hot and dense deconfined medium of quarks and gluons created in ultra-relativistic heavy-ion collisions. These fluctuations lead to energy gain of the propagating charm quarks. We construct and solve Langevin transport equations for charm quarks under the evolving background matter described by the ($3+1$)-D relativistic viscous hydrodynamics. Considering the energy gain of charm quarks, the nuclear modification factor…

Effect of the chromo-electromagnetic field fluctuations on heavy quark propagation at the LHC energies

We consider the effect of the chromo-electromagnetic field fluctuations in addition to the collisional as well as the radiative energy loss suffered by heavy quarks while propagating through the hot and densed deconfined medium of quarks and gluons created in relativistic heavy ion collisions. The chromo-electromagnetic field fluctuations play an important role as it leads to an energy gain of heavy quarks of all momentum, significantly effective at the lower momentum region. With this, we have computed, for the first time, the nuclear modification factor (R_{AA}) of heavy mesons, viz., D-meso…

小碰撞系统中的轻强子和重强子产生

Light and heavy meson production in small collision systems

基于微扰QCD和流体动力学模拟，研究氧-氧和氖-氖碰撞中冷核物质与夸克-胶子等离子体效应的相互作用，给出中快度和前向快度的理论预测，并与LHC实验数据比较。