Correlations of Heavy Quarks Produced at Large Hadron Collider

Abstract

We study the correlations of heavy quarks produced in relativistic heavy ion collisions and find them to be quite sensitive to the effects of the medium and the production mechanisms. In order to put this on a quantitative footing, as a first step, we analyze the azimuthal, transverse momentum, and rapidity correlations of heavy quark-anti quark ($Q\overline{Q}$) pairs in $pp$ collisions at $\mathcal{O}$(${\alpha }_s^3$). This sets the stage for the identification and study of medium modification of similar correlations in relativistic collision of heavy nuclei at the Large Hadron Collider. Next we study the additional production of charm quarks in heavy ion collisions due to multiple scatterings, {\it viz.}, jet-jet collisions, jet-thermal collisions, and thermal interactions. We find that these give rise to azimuthal correlations which are quite different from those arising from prompt initial production at leading order and at next to leading order.

26 pages, 15 figures. Three new figures added, comparison to experimental data included, abstract and discussion expanded

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Cited by in corpus (6)

• Heavy Flavor Azimuthal Correlations in Cold Nuclear Matter
• Elliptic Flow in Pb+Pb Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV at the LHC Using Boltzmann Transport Equation with Non-extensive Statistics
• $b\bar{b}$ Kinematic Correlations in Cold Nuclear Matter
• Production of Charm Quarks in a Parton Cascade Model for Relativistic Heavy Ion Collisions at $\sqrt{s_{\text{NN}}}$= 200 GeV
• Azimuthal correlations of D-mesons in $p$+$p$ and $p$+Pb collisions at LHC energies
• Production of D-mesons in $p$+$p$ and $p$+Pb collisions at LHC energies