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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Format: | Article |
Language: | English |
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Elsevier
2024-03-01
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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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format | Article |
id | doaj.art-3dced65c27c94f329eb1fe792b63f063 |
institution | Directory Open Access Journal |
issn | 0370-2693 |
language | English |
last_indexed | 2024-04-25T00:05:42Z |
publishDate | 2024-03-01 |
publisher | Elsevier |
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series | Physics Letters B |
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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