Speaker
Dr
Md Nasim
(UCLA)
Description
The primary purpose of relativistic heavy–ion collisions at the Relativistic Heavy Ion Collider (RHIC) is to create QCD matter under high temperature and high density – Quark-Gluon Plasma (QGP), and study its properties. Due to their large masses, heavy quarks are produced on a short time scale in hard partonic scatterings during the early stages of the nucleus–nucleus collisions and the probability of thermal production in the QGP phase is expected to be small. Therefore, they are considered a good probe to study the QGP. Among all the open charm mesons, the charm-strange meson, DS, is particularly sensitive to the charm quark hadronization in the hot nuclear medium because of its unique valence quark composition. The production of DS can be influenced by the charm-quark recombination with strange quarks whose production is enhanced in the deconfined matter. The Heavy Flavor Tracker at STAR provides an opportunity for DS measurements by reconstructing displaced decay vertices.
We will present the invariant yield and elliptic flow of DS as a function of transverse momentum in Au+Au collisions at √sNN = 200 GeV. The ratio between the yields of strange and non-strange open charm mesons will also be presented. The elliptic flow of DS will be compared to those of light mesons.
Author
Dr
Md Nasim
(UCLA)
