Quark Matter 2019 - the XXVIIIth International Conference on Ultra-relativistic Nucleus-Nucleus Collisions

Directed flow of pions, kaons and protons in Au+Au collisions at sNN= 54.4 GeV in STAR

4 Nov 2019, 17:40

20m

Wanda Han Show Theatre & Wanda Reign Wuhan Hotel

Poster Presentation Collective dynamics and final state interaction Poster Session

Speaker

Shaoqiu Fan (Central China Normal University)

Description

Rapidity-odd component of directed flow ($v_1$) measurement at various beam energy gives a new insight on the properties of the medium created in heavy-ion collisions. Both hydrodynamic and nuclear transport models indicate that $v_1$(y) is sensitive to the details of expansion during the early stages of collision fireball. In this poster, we will present directed flow ($v_1$) as a function of rapidity of identified particles (${\pi }^{+}$, ${\pi }^{-}$, $K^{+}$, $K^{+}$, $p$ and $\overline{p}$) at 54.4 GeV in Au+Au collisions at RHIC-STAR. The $v_1$(y) slope will be discussed and compared with results from Beam Energy Scan I.