大型强子对撞机上ALICE实验在轻离子碰撞中的奇异粒子产生
Strangeness production in light-ion collisions with ALICE at the LHC
浏览论文内容
中文总结 AI 辅助
ALICE实验利用LHC质心系5.36TeV的OO碰撞数据，首次测量该系统中（多）奇异粒子产额随带电粒子多重数的变化，以探究奇异增强的系统大小演化并与模型对比。
中文摘要 AI 辅助
对质子-质子（pp）和质子-核（p--A）碰撞的测量表明，小型碰撞系统展现出传统上被认为仅属于重离子碰撞的多数特征，例如奇异强子产额随碰撞多重数的平滑增长（即奇异增强）。一个关键问题是这些效应如何随系统大小演化，以及是否能在统一框架内对其进行描述。ALICE实验在质心系能量√s=5.36TeV下采集的氧-氧（OO）碰撞数据，为探索介于pp碰撞和铅-铅（Pb--Pb）碰撞之间的中等大小系统提供了前所未有的机会。本文中，我们首次给出OO碰撞中（多）奇异粒子产生随带电粒子多重数变化的结果，这使我们能在可比多重数下研究不同系统大小间的奇异增强，为奇异粒子产生机制提供新见解。实验结果与多种蒙特卡洛产生器的模型预测进行了比较。
英文摘要
Measurements in pp and p--A collisions have revealed that small collision systems exhibit most of the signs traditionally attributed to heavy-ion collisions, such as the smooth increase of the strange hadron yields with the collision multiplicity (strangeness enhancement). A key question is how these effects evolve with system size and whether they can be described within a unified framework. The recently collected oxygen--oxygen (OO) collision data by ALICE at $\sqrt{s}$ = 5.36 TeV provide an unprecedented opportunity to explore an intermediate-size system that naturally bridges the gap between pp and Pb--Pb collisions. In this contribution, we present the first results on the production of (multi-)strange particles as a function of charged-particle multiplicity in OO collisions. This allows us to investigate strangeness enhancement across different system sizes at comparable multiplicities, providing new insights into the mechanisms of strangeness production. The experimental results are compared with model predictions from various Monte Carlo generators.
