Multi-partonic medium induced cascades in expanding media

Abstract

Going beyond the simplified gluonic cascades, we introduce both gluon and quark degrees of freedom for partonic cascades inside the medium. We then solve the set of coupled evolution equations numerically with splitting kernels calculated for static, exponential, and Bjorken expanding media to arrive at medium-modified parton spectra for quark and gluon initiated jets. Using these, we calculate the inclusive jet $R_{AA}$ where the phenomenologically driven combinations of quark and gluon jet fractions are included. Then, the rapidity dependence of the jet $R_{AA}$ is examined. We also study the path-length dependence of jet quenching for different types of expanding media by calculating the jet $v_2$. Additionally, we study the sensitivity of observables on effects from nuclear modification of parton distribution functions, vacuum-like emissions in the plasma, and the time of the onset of the quenching. All calculations are compared with recently measured data.

15 pages, 5 figures

References in corpus (10)

• New parton distributions for collider physics
• EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
• The theory and phenomenology of perturbative QCD based jet quenching
• Measurements of the Nuclear Modification Factor for Jets in Pb+Pb Collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV with the ATLAS Detector
• Jet physics in heavy-ion collisions
• Measurement of jet suppression in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Q-PYTHIA: a medium-modified implementation of final state radiation
• A Monte Carlo Model for 'Jet Quenching'
• Multistage Monte-Carlo simulation of jet modification in a static medium
• Quenching effects in the cumulative jet spectrum

Cited by in corpus (7)

• Dynamically groomed jet radius in heavy-ion collisions
• Medium-induced radiation with vacuum propagation in the pre-hydrodynamics phase
• A unified picture of medium-induced radiation
• Pushing forward jet substructure measurements in heavy-ion collisions
• Effects of the formation time of parton shower on jet quenching in heavy-ion collisions
• Transverse momentum broadening of medium-induced cascades in expanding media
• System of evolution equations for quark and gluon jet quenching with broadening