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High Energy Physics - Phenomenology

arXiv:2401.04201 (hep-ph)
[Submitted on 8 Jan 2024]

Title:Measuring jet quenching with a Bayesian inference analysis of hadron and jet data by JETSCAPE

Authors:R. Ehlers, A. Angerami, R. Arora, S. A. Bass, S. Cao, Y. Chen, L. Du, H. Elfner, W. Fan, R. J. Fries, C. Gale, Y. He, U. Heinz, B. V. Jacak, P. M. Jacobs, S. Jeon, Y. Ji, L. Kasper, M. Kordell II, A. Kumar, R. Kunnawalkam-Elayavalli, J. Latessa, S. Lee, Y.-J. Lee, D. Liyanage, M. Luzum, S. Mak, A. Majumder, A. Mankolli, C. Martin, H. Mehryar, T. Mengel, J. Mulligan, C. Nattrass, J.-F. Paquet, C. Parker, J. H. Putschke, H. Roch, G. Roland, B. Schenke, L. Schwiebert, A. Sengupta, C. Shen, C. Sirimanna, D. Soeder, R. A. Soltz, I. Soudi, M. Strickland, Y. Tachibana, J. Velkovska, G. Vujanovic, X.-N. Wang, W. Zhao (JETSCAPE Collaboration)
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Abstract:The JETSCAPE Collaboration reports the first multi-messenger study of the QGP jet transport parameter $\hat{q}$ using Bayesian inference, incorporating all available hadron and jet inclusive yield and jet substructure data from RHIC and the LHC. The theoretical model utilizes virtuality-dependent in-medium partonic energy loss coupled to a detailed dynamical model of QGP evolution. Tension is observed when constraining $\hat{q}$ for different kinematic cuts of the inclusive hadron data. The addition of substructure data is shown to improve the constraint on $\hat{q}$, without inducing tension with the constraint due to inclusive observables. These studies provide new insight into the mechanisms of jet interactions in matter, and point to next steps in the field for comprehensive understanding of jet quenching as a probe of the QGP.
Comments: 4 pages, 2 figures. Proceedings of Quark Matter 2023 - XXXth International Conference on Ultra-relativistic Nucleus-Nucleus Collisions, Houston, TX, 3-9 September 2023
Subjects: High Energy Physics - Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
Cite as: arXiv:2401.04201 [hep-ph]
  (or arXiv:2401.04201v1 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.2401.04201

Submission history

From: Raymond Ehlers [view email]
[v1] Mon, 8 Jan 2024 19:27:36 UTC (1,477 KB)
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