Flavor hierarchy of parton energy loss in quark-gluon plasma from a Bayesian analysis

The quenching of light and heavy flavor hadrons in relativistic heavy-ion collisions probes the color and flavor dependences of parton energy loss through a color-deconfined quark-gluon plasma (QGP), and thus offers an important test of QCD-based calculation at extremely high density and temperature...

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Main Authors: Wen-Jing Xing, Shanshan Cao, Guang-You Qin
Format: Article
Language:English
Published: Elsevier 2024-03-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269324000819
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author Wen-Jing Xing
Shanshan Cao
Guang-You Qin
author_facet Wen-Jing Xing
Shanshan Cao
Guang-You Qin
author_sort Wen-Jing Xing
collection DOAJ
description The quenching of light and heavy flavor hadrons in relativistic heavy-ion collisions probes the color and flavor dependences of parton energy loss through a color-deconfined quark-gluon plasma (QGP), and thus offers an important test of QCD-based calculation at extremely high density and temperature. By combining a next-to-leading order perturbative QCD calculation of parton production, a general ansatz of parton energy loss functions and parton fragmentation functions, we calculate the nuclear modification of various hadron species – charged hadrons, D mesons and B-decayed J/ψ – over a wide transverse momentum regime. Comparing our calculations to the experimental data using the Bayesian statistical analysis, we perform a first simultaneous extraction of the energy loss functions of gluons (g), light quarks (q), charm quarks (c) and bottom quarks (b) inside the QGP. We find that the average parton energy loss at high energies follows the expected hierarchy of 〈ΔEg〉>〈ΔEq〉∼〈ΔEc〉>〈ΔEb〉, while the parton energy loss distribution can further test the QCD calculations of parton interaction with the dense nuclear matter. We also find that the reduction of experimental uncertainties can significantly improve the precision of the extracted parton energy loss functions inside the QGP.
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spelling doaj.art-3dced65c27c94f329eb1fe792b63f0632024-03-14T06:13:21ZengElsevierPhysics Letters B0370-26932024-03-01850138523Flavor hierarchy of parton energy loss in quark-gluon plasma from a Bayesian analysisWen-Jing Xing0Shanshan Cao1Guang-You Qin2Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, China; Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan, 430079, ChinaInstitute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, China; Corresponding authors.Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan, 430079, China; Corresponding authors.The quenching of light and heavy flavor hadrons in relativistic heavy-ion collisions probes the color and flavor dependences of parton energy loss through a color-deconfined quark-gluon plasma (QGP), and thus offers an important test of QCD-based calculation at extremely high density and temperature. By combining a next-to-leading order perturbative QCD calculation of parton production, a general ansatz of parton energy loss functions and parton fragmentation functions, we calculate the nuclear modification of various hadron species – charged hadrons, D mesons and B-decayed J/ψ – over a wide transverse momentum regime. Comparing our calculations to the experimental data using the Bayesian statistical analysis, we perform a first simultaneous extraction of the energy loss functions of gluons (g), light quarks (q), charm quarks (c) and bottom quarks (b) inside the QGP. We find that the average parton energy loss at high energies follows the expected hierarchy of 〈ΔEg〉>〈ΔEq〉∼〈ΔEc〉>〈ΔEb〉, while the parton energy loss distribution can further test the QCD calculations of parton interaction with the dense nuclear matter. We also find that the reduction of experimental uncertainties can significantly improve the precision of the extracted parton energy loss functions inside the QGP.http://www.sciencedirect.com/science/article/pii/S0370269324000819
spellingShingle Wen-Jing Xing
Shanshan Cao
Guang-You Qin
Flavor hierarchy of parton energy loss in quark-gluon plasma from a Bayesian analysis
Physics Letters B
title Flavor hierarchy of parton energy loss in quark-gluon plasma from a Bayesian analysis
title_full Flavor hierarchy of parton energy loss in quark-gluon plasma from a Bayesian analysis
title_fullStr Flavor hierarchy of parton energy loss in quark-gluon plasma from a Bayesian analysis
title_full_unstemmed Flavor hierarchy of parton energy loss in quark-gluon plasma from a Bayesian analysis
title_short Flavor hierarchy of parton energy loss in quark-gluon plasma from a Bayesian analysis
title_sort flavor hierarchy of parton energy loss in quark gluon plasma from a bayesian analysis
url http://www.sciencedirect.com/science/article/pii/S0370269324000819
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AT guangyouqin flavorhierarchyofpartonenergylossinquarkgluonplasmafromabayesiananalysis