论文标题
在LHC上，PP，P-PB，XE-XE和PB-PB碰撞中带电粒子产生的多重性依赖性
Multiplicity dependence of charged-particle production in pp, p-Pb, Xe-Xe and Pb-Pb collisions at the LHC
论文作者
论文摘要
乘数（$ n _ {\ rm ch} $）分布和横向动量（$ p _ {\ rm t} $）在$ |η|的运动范围内包容性主电荷粒子的光谱<0.8 $和0.15 GEV/$ C $ $ <p_ {t} <$ 10 GEV/$ C $在PP，P-PB，XE-XE和PB-PB碰撞中，每核对$ \ sqrt {s _ {s _ {\ rm nn} $ nnn} $ nn} $ 13 $ 13 $ 13 $ 13.76 $ tev collision collisions。顺序二维展开程序用于提取主电荷颗粒的横向动量与相应碰撞的带电粒子多重性之间的相关性。这种相关性彻底地描述了碰撞的最终状态的重要特征，因此可以用作对理论模型的严格检验。将$ p _ {\ rm t} $光谱得出的多重分布以及均值和标准偏差与最先进的模型预测进行了比较。在各种碰撞能量和系统尺寸上，始终如一地提供这些块状颗粒产生的基本观测值，可以作为调谐蒙特卡洛事件发生器的重要输入。
Multiplicity ($N_{\rm ch}$) distributions and transverse momentum ($p_{\rm T}$) spectra of inclusive primary charged particles in the kinematic range of $|η| < 0.8$ and 0.15 GeV/$c$ $< p_{T} <$ 10 GeV/$c$ are reported for pp, p-Pb, Xe-Xe and Pb-Pb collisions at centre-of-mass energies per nucleon pair ranging from $\sqrt{s_{\rm NN}} = 2.76$ TeV up to $13$ TeV. A sequential two-dimensional unfolding procedure is used to extract the correlation between the transverse momentum of primary charged particles and the charged-particle multiplicity of the corresponding collision. This correlation sharply characterises important features of the final state of a collision and, therefore, can be used as a stringent test of theoretical models. The multiplicity distributions as well as the mean and standard deviation derived from the $p_{\rm T}$ spectra are compared to state-of-the-art model predictions. Providing these fundamental observables of bulk particle production consistently across a wide range of collision energies and system sizes can serve as an important input for tuning Monte Carlo event generators.
