论文标题
与爱丽丝有关的陌生产生的多重性研究
Multiplicity dependent studies for strangeness production with ALICE
论文作者
论文摘要
爱丽丝实验研究了不同碰撞系统（PP，P-PB，XE-XE和PB-PB）和能量中的陌生产生。不同碰撞能和系统的奇怪粒子产量与暂停质量产量的比率不断增加，从低多重PP和高多种物质的PB-PB碰撞，与初始碰撞能量和碰撞颗粒无关。还可以观察到，对于具有较大陌生含量的颗粒，增强功能较大。在大型碰撞系统中观察到的其他几个特征，并解释为在小型系统中也观察到了与夸克Gluon血浆（QGP）形成相关的集体现象。这包括λ/k^{0} _ {s}的增强，在中间p_ {t}时，粒子p_ {t}光谱的演变具有多重性，以朝着更高的多样性。这些意外的结果促使使用爱丽丝探测器来了解对小型系统中这种行为的机制进行进一步的研究。
The ALICE experiment has studied strangeness production in different collision systems (pp, p-Pb, Xe-Xe and Pb-Pb) and energies. The ratio of the strange particle yield to pion yield as a function of multiplicity for different collision energies and systems follow a continuously increasing trend ("enhancement") from low multiplicity pp to high-multiplicity Pb-Pb collisions, independent of the initial collision energy and colliding particles. It is also observed that the enhancement is larger for the particles with larger strangeness content. Several other features that were observed in large collision systems and explained as due to collective phenomena related to the formation of the Quark Gluon Plasma (QGP) are also observed in small systems. This includes the enhancement of Λ/K^{0}_{S} yield ratios at intermediate p_{T}, the evolution of the particle p_{T} spectra with multiplicity towards higher multiplicity. These unexpected results have motivated to perform further studies using the ALICE detector for understanding the mechanisms responsible for such behaviour in small systems.
