Heavy Flavor and Jets at RHIC

TL;DR

This paper reports on heavy flavor and jet measurements at RHIC, showing suppression of J/ψ in Au-Au, modification of jets in central collisions, and differing behaviors in various collision systems, revealing insights into quark-gluon plasma effects.

Contribution

It provides new experimental results on heavy flavor suppression and jet modification in different collision systems at RHIC, highlighting the complex interactions in quark-gluon plasma.

Findings

J/ψ suppressed in Au-Au collisions

Jets are highly modified in central Au-Au collisions

Non-photonic electrons from D and B mesons are suppressed in Au-Au

Abstract

We present recent results for heavy flavor and jets produced in $\sqrt{s_{NN}} = 200$ GeV p-p, d-Au, Cu-Cu and Au-Au collisions at at RHIC. We find J/$\psi$ production is suppressed in Au-Au, but high energy J/$\psi$ are not suppressed in d-Au or Cu-Cu. Non-photonic electrons from D and B mesons are both suppressed in Au-Au. We study jets using two-particle 2D angular correlations as well as jet reconstruction algorithms. We find that jets show little if any suppression, but are highly modified in central Au-Au, becoming elongated in the $\eta$ direction and having fewer high-$p_t$ particles but many more low-$p_t$ particles for central Au-Au.