Title: QCD jets in a hot and dense medium: A study of shower formation time and collision kernels

Journal Article · · Physical Review. C

With the use of , a model which considers evolving QCD jets against a fluid dynamical background, it is shown that the introduction of formation time to the parton shower after the initial hard scattering is essential for a simultaneous description of charged hadron and jet R A A . This inclusion also improves jet shape ratios at small angle and jet fragmentation function ratios of leading charged hadrons. The  framework is then aimed at a study of the leading-order, next-to-leading-order, and nonperturbative collision kernels. Sizable differences in the modification of jet substructure observables, i.e., jet shape and fragmentation functions, are observed. Such differences are caused by the difference in the radiation rates of relatively soft gluons that survive in the evolution in medium. Published by the American Physical Society 2025

Sponsoring Organization:
USDOE
OSTI ID:
2564512
Journal Information:
Physical Review. C, Journal Name: Physical Review. C Journal Issue: 5 Vol. 111; ISSN PRVCAN; ISSN 2469-9985
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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