Jet quenching for heavy flavors in $AA$ and $pp$ collisions

Abstract

We perform a global analysis of experimental data on jet quenching for heavy flavors for scenarios with and without quark-gluon plasma formation in $pp$ collisions. We find that the theoretical predictions for the nuclear modification factor $R_{AA}$ for heavy flavors at the LHC energies are very similar for these scenarios, and the results for $R_{AA}$ and $v_2$ agree reasonably with the LHC data. The agreement with data at the RHIC top energy becomes somewhat better for the intermediate scenario, in which the quark-gluon plasma formation in $pp$ collisions occurs only at the LHC energies. Our fits to heavy flavor $R_{AA}$ show that description of jet quenching for heavy flavors requires somewhat bigger ${\alpha }_s$ than data on jet quenching for light hadrons.

15 pages, 12 figures

References in corpus (8)

• EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
• Heavy quarks and jets as probes of the QGP
• Parton energy loss in an expanding quark-gluon plasma: Radiative vs collisional
• Jet quenching with running coupling including radiative and collisional energy losses
• Anomalous mass dependence of radiative quark energy loss in a finite-size quark-gluon plasma
• Jet quenching with $T$-dependent running coupling
• Medium effects for hadron-tagged jets in proton-proton collisions
• Charm and beauty isolation from heavy flavor decay electrons in p+p and Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV at LHC