Inclusive jet and hadron suppression in a multistage approach

• Main Authors: Kumar, A, Tachibana, Y, Sirimanna, C, Vujanovic, G, Cao, S, Majumder, A, Chen, Y, Du, L, Ehlers, R, Everett, D, Fan, W, He, Y, Mulligan, J, Park, C, Angerami, A, Arora, R, Bass, S. A, Dai, T, Elfner, H, Fries, R. J, Gale, C, Garza, F, Heffernan, M, Heinz, U, Jacak, B. V, Jacobs, P. M, Jeon, S, Kauder, K, Kasper, L, Ke, W, Kelsey, M, Kim, B, KordellII, M, Latessa, J, Lee, Y. -J, Liyanage, D, Lopez, A, Luzum, M, Mak, S, Mankolli, A, Martin, C, Mehryar, H, Mengel, T, Nattrass, C, Oliinychenko, D, Paquet, J. -F, Putschke, J. H, Roland, G, Schenke, B, Schwiebert, L, Sengupta, A, Shen, C, Silva, A, Soeder, D, Soltz, R. A, Staudenmaier, J, Strickland, M, Velkovska, J, Wang, X. -N, Wolpert, R. L
• Format: Journal Article
• Language: English
• Published: 16-04-2023
• Subjects: Physics - High Energy Physics - Phenomenology; Physics - Nuclear Theory
• DOI: 10.48550/arxiv.2204.01163

Phys. Rev. C 107, no.3, 034911 (2023) We present a new study of jet interactions in the quark-gluon plasma created
in high-energy heavy-ion collisions, using a multistage event generator within
the JETSCAPE framework. We focus on medium-induced modifications in the rate of
inclusive jets and high transverse momentum (high-$p_{\mathrm{T}}$) hadrons.
Scattering-induced jet energy loss is calculated in two stages: A high
virtuality stage based on the MATTER model, in which scattering of highly
virtual partons modifies the vacuum radiation pattern, and a second stage at
lower jet virtuality based on the LBT model, in which leading partons gain and
lose virtuality by scattering and radiation. Coherence effects that reduce the
medium-induced emission rate in the MATTER phase are also included. The TRENTo
model is used for initial conditions, and the (2+1)dimensional VISHNU model is
used for viscous hydrodynamic evolution. Jet interactions with the medium are
modeled via 2-to-2 scattering with Debye screened potentials, in which the
recoiling partons are tracked, hadronized, and included in the jet clustering.
Holes left in the medium are also tracked and subtracted to conserve transverse
momentum. Calculations of the nuclear modification factor ($R_{\mathrm{AA}}$)
for inclusive jets and high-$p_{\mathrm{T}}$ hadrons are compared to
experimental measurements at the BNL Relativistic Heavy Ion Collider (RHIC) and
the CERN Large Hadron Collider (LHC). Within this framework, we find that with
one extra parameter which codifies the transition between stages of jet
modification -- along with the typical parameters such as the coupling in the
medium, the start and stop criteria etc. -- we can describe these data at all
energies for central and semicentral collisions without a rescaling of the jet
transport coefficient $\hat{q}$.