Jet angularities in dijet production in proton-proton and heavy-ion collisions at RHIC

Yang-Ting Chien, Oleh Fedkevych, Daniel Reichelt, Steffen Schumann

Published 2024-04-05Version 1

We study jet angularities for dijet production at the Relativistic Heavy Ion Collider (RHIC) in proton-proton (pp) and nucleus-nucleus (AA) collisions at 200 GeV nucleon-nucleon center-of-mass collision energy. In particular, we provide $\mathrm{NLL}$ resummed predictions for angularity observables of groomed and ungroomed jets produced in $\rm pp$ collisions matched to next-to-leading order QCD calculations resulting in $\mathrm{NLO+NLL^\prime}$ accuracy. Our parton-level predictions are corrected for non-perturbative effects, such as hadronization and underlying event, using parton-to-hadron level transfer matrices obtained with the Sherpa event generator. Furthermore, we use the Q-Pythia and JEWEL generators to estimate the impact of the interaction between quarks and gluons produced by the parton shower with the dense medium formed in heavy-ion collisions on the considered jet angularities.