Pseudorapidity distributions of charged particles in pp($\rm\overline{p}$), p(d)A and AA collisions using Tsallis thermodynamics

Inelasticity resulting from rapidity spectra analysis

In this work we study the pseudorapidity spectra o charged particles produced in proton+proton and proton+antiproton interactions in a wide energy range using the non-extensive Tsallis approach. We evaluate the inelasticity coefficients of the discussed reactions which remain approximately independent of the collision energy.

从格点量子色动力学研究核子海的味结构

Flavor Structure of the Nucleon Sea from Lattice QCD

我们提出了第一个直接晶格计算的等矢量海夸克部分子分布的形式主义最近开发的作者之一。我们使用$N_f=2+1+1$ HISQ格点规范系综（由MILC协作产生）和三叶草价费米子与π介子质量310兆电子伏。我们能够得到的核子海味结构的定性特征，即使在这个大的π介子质量：我们观察到违反戈特弗里德求和规则，表明$\overline{d}(x) > \overline{u}(x)$ ;螺旋度分布服从$Δ\overline{u}(x) > Δ\overline{d}(x)$，这是一致的大轻子赝快度和小轻子赝快度的STAR数据。

利用PYTHIA8研究$\sqrt{s}$=13 TeV质子-质子碰撞中开粲重味强子产生的多重数、横动量和赝快度依赖关系

Multiplicity, transverse momentum and pseudorapidity dependence of open-heavy flavored hadron production in proton+proton collisions at $\sqrt{s}$= 13 TeV using PYTHIA8

本研究利用PYTHIA8蒙特卡洛事件产生器，研究13 TeV质子-质子碰撞中开粲重味强子产生的多重数、横动量和赝快度依赖，结合Tsallis统计分析有效温度等，尝试建立初末态关联。

从高能碰撞的横动量谱解出粒子的随机热运动和源的集体膨胀

Disentangling random thermal motion of particles and collective expansion of source from transverse momentum spectra in high energy collisions

本文在多尺度热模型的框架下，描述了金-金（Au-Au）、铜-铜（Cu-Cu）、铅-铅（Pb-Pb）、质子-铅（Pb-Pb）中末态轻味粒子的横动量谱的实验结果（$p$ -Pb）和质子-质子（$p$ - $p$）碰撞在各种能量，测量的凤凰，星，爱丽丝，和CMS合作，通过使用Tsallis标准（Tsallis形式的费米-狄拉克或玻色-爱因斯坦），Tsallis，和两个或三个组件的标准分布，实际上可以被视为不同类型的“温度计”或“温标”和“速度计”。在这三个分布中的一个中心参数是有效温度，它包含了发射源的动力学冻结温度的信息，并反映了粒子的随机热运动以及源的集体膨胀的影响。为了解开这两种影响，我们从有效温度的截距中提取动力学冻结温度（$T$）曲线作为粒子静止质量的函数（$m_0$）当绘制$T$与$m_0$的曲线图时，平均横向动量斜率的平均横向流速当绘制$\langle p_T \rangle$与$\overline{m}$时，（$\langle p_T \rangle$）曲线作为平均移动质量（$\overline{m}$）的函数。

Elliptic flow of identified particles in Pb-Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV

In this paper, by using a Tsallis-Pareto-type function and the multisource thermal model, the elliptic flow coefficients of particles $π^{\pm }$, $K^{\pm }$, $p+\overline{p}$, $Λ+\overline{% Λ}$, and $K_{S}^{0}$ produced in Pb-Pb collisions at the center-of-mass energy of $\sqrt{s_{NN}}=5.02$ TeV are investigated. In the process of collisional evolution, because of geometric structure, pressure gradient, and thermal diffusion effects, deformation and translation occurred in the isotropic emission source, leading to anisotropy in the azimuth distribution of the final-state particles. Based on t…

Radial Flow and Differential Freeze-out in Proton-Proton Collisions at $\sqrt{s}= 7$ TeV at the LHC

We analyse the transverse momentum ($p_{\rm T}$)-spectra as a function of charged-particle multiplicity at midrapidity ($|y| < 0.5$) for various identified particles such as $π^{\pm}$, $K^{\pm}$, $K_S^0$, $p+\overline{p}$, $ϕ$, $K^{*0} + \overline {K^{*0}}$, and $Λ$ + $\barΛ$ in proton-proton collisions at $\sqrt{s}$ = 7 TeV using Boltzmann-Gibbs Blast Wave (BGBW) model and thermodynamically consistent Tsallis distribution function. We obtain the multiplicity dependent kinetic freeze-out temperature ($T_{\rm kin}$) and radial flow ($β$) of various particles after fitting the $p_{\rm T}$-distri…

利用PYTHIA8通过前后关联探究pp碰撞中粒子产生的非微扰QCD方面

Probing non-perturbative QCD aspects on particle production in pp collisions with forward-backward correlations using \texttt{PYTHIA8}

利用PYTHIA8模拟研究LHC pp碰撞中的前后关联，揭示色重连和QCD辐射对广延、强度及强强度量的不同影响，并验证与实验数据的一致性。

Thermal freeze-out parameters and pseudo-entropy from charged hadron spectra in high energy collisions

We collected the transverse momentum (mass) spectra of charged hadrons ($π^{-}$, $π^{+}$, $K^{-}$, $K^{+}$, $\overline{p}$, and $p$) produced in collisions over a center-of-mass energy range from 2.70 to 200 GeV (per nucleon pair). The modified Tsallis--Pareto-type function (the TP-like function) with average transverse flow velocity is used to describe the contribution of participant or constituent quarks to transverse momentum of considered hadron. The experimental spectra of $π^{\mp}$ and $K^{\mp}$ (or $\overline{p}$ and $p$) are fitted by the convolution of two (or three) TP-like functions…

2.76 TeV Pb-Pb碰撞中横动量谱的热力学分析：温度、冻结参数和非广延性的中心度依赖性

Thermodynamic Analysis of Transverse Momentum Spectra in Pb-Pb Collisions at 2.76 TeV: Centrality Dependence of Temperature, Freezeout Parameters and Non-Extensitivity

本文利用Tsallis分布拟合ALICE数据中Pb-Pb碰撞的横动量谱，提取温度、冻结参数等热力学量，发现其随中心度增加而增大，而q参数减小，并支持差分冻结假设。