Speaker
Ms
Olga Rusňáková
(CTU Prague)
Description
Non-Photonic Electron Measurement With STAR Experiment
Olga Rusňáková (for the STAR Collaboration)
Heavy quarks, primarily produced in initial hard scattering processes at the Relativistic Heavy Ion Collider (RHIC), are important tools for understanding the properties of the Quark-Gluon Plasma (QGP). The heavy quark interaction with the QGP can be studied through non-photonic electrons (NPE), which are produced from semi-leptonic decays of heavy flavor hadrons. In p+p collisions measurements of heavy flavor production serve as a test of the pQCD framework and are used as a baseline in comparison with measurements in heavy ion collisions. In Au+Au and $d$+Au the hot and cold nuclear matter effects can be quantified through the nuclear modification factors ($R_{AA}$, $R_{dA}$). The energy dependence of $R_{AA}$ and elliptic flow $v_2$ can be used to further probe the interaction between heavy quarks and the medium.
In this talk, we will present a new measurement of NPE production in p+p collisions at $\sqrt{s}$=200 GeV in a broad transverse momentum range of 0.5 - 8 GeV/c. We will discuss the energy dependence of NPE production and azimuthal anisotropy measurements in Au+Au collisions at $\sqrt{s_{NN}}$=39, 62.4 and 200 GeV. Nuclear modification factors $R_{AA}$ in Au+Au collisions and $R_{dA}$ in $d$+Au collisions at $\sqrt{s_{NN}}$=200 GeV will be presented too.
Primary author
Ms
Olga Rusňáková
(CTU Prague)
