Strangeness in Quark Matter 2016

Ds± meson production in Au+Au collisions at sNN=200 GeV in STAR

28 Jun 2016, 14:00

20m

Joseph Wood Krutch Theatre (Clark Kerr Campus)

Contributed Talk Heavy Quark Production

Speaker

Long Zhou (USTC && BNL)

Description

Heavy quarks, predominantly produced in hard scattering processes at the initial stages of heavy-ion collisions, are considered as excellent probes to the strongly interacting deconfined medium formed in these collisions. In particular the $D_s($c$\overline{s}/\overline{c}$s) production is expected to be affected by both the strangeness enhancement and the primordial charm quark production. Thus the modification of the $D_s$ meson spectra in heavy-ion collisions provides a new interesting probe to study key properties of the hot nuclear medium. The Heavy Flavor Tracker, installed into the STAR experiment since 2014, is designed to extend STAR's capability of measuring heavy flavor production via the topological reconstruction of displaced decay vertices. It provides a unique opportunity for precise measurement of the $D_s$ meson production in heavy-ion collisions at RHIC energies. We will present the measurement of $D_s$ meson production via the decay channel $D_s\to \varphi (1020)+\pi$ in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV. Preliminary results on the nuclear modification factor ($R_{AA}$) and the production ratio $D_s/D^0$ will be presented.

Presentation materials

SQM_LongZhou_v9.pdf

Peer reviewing

Paper

Accepted on 8 Nov 2016 by Jochen Thaeder

SQM_2016_proceeding_myVersion_v6.pdf