Investigations of anisotropic collectivity using multi-particle correlations in pp , p – Pb and Pb – Pb collisions Katarı́na Gajdošová ( on behalf of the ALICE Collaboration )
Investigations of anisotropic collectivity using multi-particle correlations in pp , p – Pb and Pb – Pb collisions Katarı́na Gajdošová ( on behalf of the ALICE Collaboration )
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发表时间：
2017
影响因子：
3.8
通讯作者：
Niels Bohr Istitute
中科院分区：
文献类型：
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作者：
Niels Bohr Istitute
两种和多粒子方位角相关性已被证明是探测重型离子碰撞中强烈相互作用物质的特性的出色工具，用于多粒子累积的结果已被解释为小碰撞中集体的证据。系统（PP和PB）在本文中提供了对系统波动的新见解。在√s= 13的PP碰撞中，结果与√nnn= 5.02 tev的P – PB碰撞中的测量结果进行了比较。将列出η间隙表示Cn {4，|Δη|}，它能够进一步抑制多粒子累积的非流量效应。 PP碰撞。
Twoand multi-particle azimuthal correlations have proven to be an excellent tool to probe the properties of the strongly interacting matter created in heavy-ion collisions. Recently, the results obtained for multi-particle cumulants have been interpreted as evidence for collectivity in the small collision systems (pp and p–Pb) providing new insights into the systems’ fluctuating initial conditions. In this article, first ALICE results on twoand multi-particle cumulants as a function of charged hadron multiplicity produced at midrapidity (|η| < 1.0) in pp collisions at √s = 13 TeV are reported. The results are compared with measurements in p–Pb collisions at √ sNN = 5.02 TeV and in Pb–Pb collisions at √ sNN = 2.76 TeV. A new method for the 4-particle cumulant with an η gap denoted as cn{4, |Δη|} will be presented, which is capable of further suppressing non-flow effects in multi-particle cumulants. The results allow for further understanding of the origin of multi-particle correlations in pp collisions.