Measurement of D0 elliptic flow using the Heavy Flavor Tracker detector in Au plus Au collisions at √SNN=200 GeV

被引：0

作者：

Lipiec, Andrzej ^{[1
]}

机构：

[1] Warsaw Univ Technol, Koszykowa 75, Warsaw, Poland

来源：

PHOTONICS APPLICATIONS IN ASTRONOMY, COMMUNICATIONS, INDUSTRY, AND HIGH ENERGY PHYSICS EXPERIMENTS 2017 | 2017年 / 10445卷

关键词：

QGP; STAR; charm; heavy flavor; elliptic flow; D-0;

D O I：

10.1117/12.2280968

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In heavy ion collisions at relativistic energies conducted at Relativistic Heavy Ion Collider (RHIC, Upton, USA) a new state of matter, Quark Gluon Plasma (QGP), is produced. QGP is a state of matter with partonic (i.e. gluons + quarks) degrees of freedom and is believed to be existing only during first moments after the Big Bang, and possibly inside of the heaviest neutron stars. One of the key QGP signatures is the elliptic flow (v(2)) - a coefficient that describes spatial assymetry of particle yield. It has been observed that v(2) of particles composed of light quarks (i.e. up, down and strange) follow the same trends when scaled to the number of constituent quarks. Such observations implied that all light quarks gain the same flow in the heavy ion collision. On the other hand it was speculated that heavy quarks (charm and bottom) should have smaller v(2) bacause of their in-medium energy losses. Due to their heavy mass, c quarks are produced mostly before QGP is formed, which makes them excellent probes to study this hot, dense and strongly interacting medium. The Solenoidal Tracker At RHIC (STAR) experiment took data with the newly installed Heavy Flavor Tracker (HFT) detector. Thanks to the state-of-the-art tracking resolution of the HFT it is possible to measure D-0 mesons with unprecedented precision. This paper presents the STAR experiment measurement of D-0 elliptic flow.

引用

页数：7

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