论文标题
$ \ sqrt {s} = 13 $ tev的$π$，k和p生产的多重性依赖性
Multiplicity dependence of $π$, K, and p production in pp collisions at $\sqrt{s} = 13$ TeV
论文作者
论文摘要
本文介绍了$π^{\ pm} $，$ \ rm {k}^{\ pm} $，$ \ rm {p} $和$ \ bar {\ rm {p}} $ transversemenm（$ p _ {$ p _ {\ rm {\ rm {\ rm {t} $）spectry assprion fornctron fornctron fornctron fornctron fornctron fornctron fornctron fornctron-inform inform inform inform， （pp）$ \ sqrt {s} $ = 13 tev的碰撞与LHC的爱丽丝检测器。这样的研究使我们能够隔离光 - 流动颗粒产生的质量中心能量依赖性。此处报告的测量值涵盖了$ p _ {\ rm {t}} $从0.1 GEV/$ C $到20 GEV/$ C $，并且以速度间隔$ | y | <0.5 $完成。 $ p _ {\ rm {t}} $ - 微分粒子比值具有多样性的进化，类似于$ \ sqrt {s} $ = 7 tev在PP碰撞中观察到的，该tev在本文中讨论了一些水动力学和PQCD启动模型的定性描述。此外，$ p _ {\ rm {t}} $ - 在两个不同的质量中心能量下在PP碰撞中测得的积分的强子与铅率比在相似的乘数上进行比较时是一致的。这也延伸到奇怪的多散发剂，表明，在LHC能量下，在不同的碰撞能和碰撞系统下，具有颗粒多样性的粒子黑眼化学尺度。
This paper presents the measurements of $π^{\pm}$, $\rm{K}^{\pm}$, $\rm{p}$ and $\bar{\rm{p}}$ transverse momentum ($p_{\rm{T}}$) spectra as a function of charged-particle multiplicity density in proton-proton (pp) collisions at $\sqrt{s}$ = 13 TeV with the ALICE detector at the LHC. Such study allows us to isolate the center-of-mass energy dependence of light-flavour particle production. The measurements reported here cover a $p_{\rm{T}}$ range from 0.1 GeV/$c$ to 20 GeV/$c$ and are done in the rapidity interval $|y|<0.5$. The $p_{\rm{T}}$-differential particle ratios exhibit an evolution with multiplicity, similar to that observed in pp collisions at $\sqrt{s}$ = 7 TeV, which is qualitatively described by some of the hydrodynamical and pQCD-inspired models discussed in this paper. Furthermore, the $p_{\rm{T}}$-integrated hadron-to-pion yield ratios measured in pp collisions at two different center-of-mass energies are consistent when compared at similar multiplicities. This also extends to strange and multistrange hadrons, suggesting that, at LHC energies, particle hadrochemistry scales with particle multiplicity the same way under different collision energies and colliding systems.
