论文标题

粒子的产生是基础事件活性的函数,并且与爱丽丝的非常正向能量

Particle production as a function of underlying-event activity and very forward energy with ALICE

论文作者

Fan, Feng

论文摘要

在$ \ sqrt {s} _ {\ rm nn} = 5.02 $ tev中的PP和P-PB碰撞中的带电粒子产生的测量值讨论了朝向,远距离和横向区域。这三个区域是按事件定义的,相对于轨道,最大的横向动量($ p _ {\ rm t}^{\ rm trig} $)。横向区域对基础事件(UE)敏感,但还包括初始状态和最终辐射(ISR-FSR)的贡献。因此,它被进一步细分为两个区域,根据它们的相对多样性定义:trans-max(具有最大多重性的亚横向区域)和分别对UE和ISR-FSR敏感的Trans-Min(具有最小多重性的亚横向区域)。在三个定义的横向区域中探索了类似KNO样的缩放特性。最后,报告了$ p _ {\ rm t}^{\ rm trig} $与接近梁快速度(非常正向能量)中检测到的能量的关系。

Measurements of charged-particle production in pp and p-Pb collisions at $\sqrt{s}_{\rm NN}=5.02$ TeV in the toward, away and transverse regions are discussed. These three regions are defined event by event relative to the track with the largest transverse momentum ($p_{\rm T}^{\rm trig}$). The transverse region is sensitive to the underlying event (UE), but it also includes contributions from initial- and final-state radiation (ISR-FSR). Therefore, it is further subdivided in two regions, defined according to their relative multiplicity: trans-max (the sub-transverse region with the largest multiplicity) and trans-min (the sub-transverse region with the smallest multiplicity) regions which are sensitive to UE and ISR-FSR, respectively. KNO-like scaling properties are explored in the three defined transverse regions. Finally, the relationship between $p_{\rm T}^{\rm trig}$ and the energy detected in a region close to beam rapidity (very forward energy) is reported.

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