Speaker
Katarína Gajdošová
Description
Properties of a hot and dense strongly interacting form of matter called the Quark-Gluon Plasma (QGP) are being studied in ultrarelativistic heavy-ion collisions at the Relativistic Heavy Ion Collider (RHIC). Heavy quarks are created during early stages of heavy-ion collisions in hard processes before the QGP is formed. Their identities are not lost during the evolution of the QGP and subsequent phases, which makes them a good probe for the study of the properties of the QGP. Non-Photonic Electrons (NPE) that originate from semileptonic decays of $D$ and $B$ hadrons can serve as a good proxy for heavy flavor quarks. The nuclear modification factor $R_{AA}$ of NPE is sensitive to the interaction of heavy quarks with the QGP and thus the QGP properties.
Measurements of NPE $R_{AA}$ have revealed a strong suppression at high $p_T$ in Au+Au collisions at $\sqrt{s_{NN}} = 200 $ GeV at the Relativistic Heavy Ion Collider. In the year 2012 STAR collected data in U+U collisions at $\sqrt{s_{NN}} = 193$ GeV. In the most central U+U collisions a higher energy density can be achieved than that in Au+Au collisions, which is expected to enhance the suppression of NPE. In this poster the preliminary results on NPE $R_{AA}$ with $1.2 < p_T < 6.0$ GeV/$c$ in 0-5% most central U+U collisions will be presented and compared to those in Au+Au collisions.
| On behalf of collaboration: | STAR |
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Primary author
Katarína Gajdošová
