Yields and elliptic flow of d(dbar) and He3(He3bar) in Au+Au collisions at sqrt(sNN)= 200 GeV

Abstract

We present the transverse momentum spectra at mid-rapidity for $d$, $\bar{d}$ ($1<p_{T}<4 GeV/c$) and $^{3}He$, $\bar{^{3}He}$ ($2<p_{T}<6 GeV/c$) measured by the STAR experiment at RHIC and extract the coalescence parameters $B_{2}$ and $B_{3}$ (respectively). We also present the $v_{2}$ measurement for $d(\bar{d})$ and $^{3}He(\bar{^{3}He})$. We find that the $d(\bar{d})$ and $p(\bar{p})$ $v_{2}$ follows the atomic mass number A scaling within errors and a negative $v_{2}$ has been observed for $\bar{d}$ at low $p_{T}$.