论文标题
Quarkonia生产是$ \ sqrt {s} = 13 $ tev with Alice的PP碰撞中带电的粒子多重性的函数
Quarkonia production as a function of charged-particle multiplicity in pp collisions at $\sqrt{s}=13$ TeV with ALICE
论文作者
论文摘要
在LHC Energies的PP碰撞中，最初的硬散射产生了沉重的夸克，然后这些夸克在开放的重风味Hadron或Quarkonia中进行强化（例如J/$ψ$，$ψ（2s）$，$υ$）。 Quarkonium生产作为带电粒子多重性的函数的研究链接软过程，并允许人们研究其相互作用。虽然在多方相互作用的背景下，可以很好地理解Quarkonium生产的线性增加，而Quarkonium产生的函数可以合理地理解，但相对于线性增加的偏差的观察需要对碰撞进行更详细的描述。在此贡献中，我们将在$ \ sqrt {s} = 13 $ tev中介绍J/$ψ$和$υ$生产的最新Alice测量值，以及PP碰撞中带电的粒子多重性的函数。在$υ（2s）$上的相对收益率上的双重比率超过$υ（1s）$和J/$ψ$超过$υ（1s）$作为带电粒子多重性的函数。
In pp collisions at LHC energies, heavy quarks are produced in initial hard scatterings and then these quarks hadronize in either open heavy-flavor hadrons or quarkonia (e.g. J/$ψ$, $ψ(2S)$, $Υ$). The study of quarkonium production as a function of charged-particle multiplicity links soft and hard processes and allows one to study their interplay. While a linear increase of quarkonium production as a function of charged-particle multiplicity can be reasonably well understood in the context of multi-parton interactions, the observation of deviations with respect to a linear increase requires a more detailed description of the collision. In this contribution, we will present the latest ALICE measurements at forward rapidity for J/$ψ$ and $Υ$ production as a function of charged-particle multiplicity in pp collisions at $\sqrt{s}=13$ TeV. The first measurement of the double ratios of relative yield of $Υ(2S)$ over $Υ(1S)$ and J/$ψ$ over $Υ(1S)$ as a function of charged-particle multiplicity will also be shown.
