Hybrid Hadronization of Jet Showers from $e^++e^-$ to $A+A$ with JETSCAPE

Author:

Cameron Parker, Aaron Angerami, Ritu Arora, Steffen Bass, Shanshan Cao, Yi Chen, Raymond Ehlers, Hannah Elfner, Wenkai Fan, Rainer J. Fries, Charles Gale, Yayun He, Ulrich Heinz, Barbara Jacak, Peter Jacobs, Sangyong Jeon, Yi Ji, Lauren Kasper, Michael Kordell II, Amit Kumar, Joseph Latessa, Yen-Jie Lee, Roy Lemmon, Dananjaya Liyanage, Arthur Lopez, Matt Luzum, Abhijit Majumder, Simon Mak, Andi Mankolli, Christal Martin, Haydar Mehryar, Tanner Mengel, James Mulligan, Christine Nattrass, Jaime Norman, Jean-Francois Paquet, Joern H. Putschke, Gunther Roland, Bjoern Schenke, Loren Schwiebert, Arjun Sengupta, Chun Shen, Chathuranga Sirimanna, Ron A. Soltz, Ismail Soudi, Michael Strickland, Yasuki Tachibana, Julia Velkovska, Gojko Vujanovic, Xin-Nian Wang, Wenbin Zhao

Keyword:

High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Nuclear Experiment (nucl-ex), Nuclear Theory (nucl-th)

journal:

date:

2023-10-30 16:00:00

Abstract

In this talk we review jet production in a large variety of collision systems using the JETSCAPE event generator and Hybrid Hadronization. Hybrid Hadronization combines quark recombination, applicable when distances between partons in phase space are small, and string fragmentation appropriate for dilute parton systems. It can therefore smoothly describe the transition from very dilute parton systems like $e^++e^-$ to full $A+A$ collisions. We test this picture by using JETSCAPE to generate jets in various systems. Comparison to experimental data in $e^++e^-$ and $p+p$ collisions allows for a precise tuning of vacuum baseline parameters in JETSCAPE and Hybrid Hadronization. Proceeding to systems with jets embedded in a medium, we study in-medium hadronization for jet showers. We quantify the effects of an ambient medium, focusing in particular on the dependence on the collective flow and size of the medium. Our results clarify the effects we expect from in-medium hadronization of jets on observables like fragmentation functions, hadron chemistry and jet shape.

PDF: Hybrid Hadronization of Jet Showers from $e^++e^-$ to $A+A$ with JETSCAPE.pdf