{"title":"大型强子对撞机Pb+Pb对撞中通过D介子和B介子的半轻子衰变实现的粲夸克和底夸克的淬灭和流动* * 国家自然科学基金部分资助(12225503, 11935007, 11890710, 11890711, 12175122, 2021-867)。W.-J. X.得到中国博士后科学基金(2023M742099)的部分资助。部分计算在湖北武汉华中师范大学核科学计算中心(NSC3)完成。","authors":"Shu-Qing Li, Wen-Jing Xing, Shanshan Cao, Guang-You Qin","doi":"10.1088/1674-1137/ad4c59","DOIUrl":null,"url":null,"abstract":"Heavy flavor particles provide important probes of the microscopic structure and thermodynamic properties of the quark-gluon plasma (QGP) produced in high-energy nucleus-nucleus collisions. We studied the energy loss and flow of charm and bottom quarks inside the QGP via the nuclear modification factor (<inline-formula>\n<tex-math><?CDATA $R_{AA}$?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_8_084106_M1.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula>) and elliptic flow coefficient (<inline-formula>\n<tex-math><?CDATA $ v_2 $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_8_084106_M2.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula>) of their decayed leptons in heavy-ion collisions at the LHC. The dynamical evolution of the QGP was performed using the CLVisc (3+1)-dimensional viscous hydrodynamics model; the evolution of heavy quarks inside the QGP was simulated with our improved Langevin model that considers both collisional and radiative energy loss of heavy quarks; the hadronization of heavy quarks was simulated via our hybrid coalescence-fragmentation model; and the semi-leptonic decay of <italic toggle=\"yes\">D</italic> and <italic toggle=\"yes\">B</italic> mesons was simulated via PYTHIA. Using the same spatial diffusion coefficient for charm and bottom quarks, we obtained smaller <inline-formula>\n<tex-math><?CDATA $R_{AA}$?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_8_084106_M5.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> and larger <inline-formula>\n<tex-math><?CDATA $ v_2 $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_8_084106_M6.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> of charm decayed leptons than bottom decayed leptons, indicating stronger energy loss of charm quarks than bottom quarks inside the QGP within our current model setup.","PeriodicalId":10250,"journal":{"name":"中国物理C","volume":"21 1","pages":""},"PeriodicalIF":3.6000,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Quenching and flow of charm and bottom quarks via semi-leptonic decay of D and B mesons in Pb+Pb collisions at the LHC* * Supported in part by the National Natural Science Foundation of China (12225503, 11935007, 11890710, 11890711, 12175122, 2021-867). W.-J. X. is supported in part by China Postdoctoral Science Foundation (2023M742099). Some of the calculations were performed in the Nuclear Science Computing Center at Central China Normal University (NSC3), Wuhan, Hubei, China\",\"authors\":\"Shu-Qing Li, Wen-Jing Xing, Shanshan Cao, Guang-You Qin\",\"doi\":\"10.1088/1674-1137/ad4c59\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Heavy flavor particles provide important probes of the microscopic structure and thermodynamic properties of the quark-gluon plasma (QGP) produced in high-energy nucleus-nucleus collisions. We studied the energy loss and flow of charm and bottom quarks inside the QGP via the nuclear modification factor (<inline-formula>\\n<tex-math><?CDATA $R_{AA}$?></tex-math>\\n<inline-graphic xlink:href=\\\"cpc_48_8_084106_M1.jpg\\\" xlink:type=\\\"simple\\\"></inline-graphic>\\n</inline-formula>) and elliptic flow coefficient (<inline-formula>\\n<tex-math><?CDATA $ v_2 $?></tex-math>\\n<inline-graphic xlink:href=\\\"cpc_48_8_084106_M2.jpg\\\" xlink:type=\\\"simple\\\"></inline-graphic>\\n</inline-formula>) of their decayed leptons in heavy-ion collisions at the LHC. The dynamical evolution of the QGP was performed using the CLVisc (3+1)-dimensional viscous hydrodynamics model; the evolution of heavy quarks inside the QGP was simulated with our improved Langevin model that considers both collisional and radiative energy loss of heavy quarks; the hadronization of heavy quarks was simulated via our hybrid coalescence-fragmentation model; and the semi-leptonic decay of <italic toggle=\\\"yes\\\">D</italic> and <italic toggle=\\\"yes\\\">B</italic> mesons was simulated via PYTHIA. Using the same spatial diffusion coefficient for charm and bottom quarks, we obtained smaller <inline-formula>\\n<tex-math><?CDATA $R_{AA}$?></tex-math>\\n<inline-graphic xlink:href=\\\"cpc_48_8_084106_M5.jpg\\\" xlink:type=\\\"simple\\\"></inline-graphic>\\n</inline-formula> and larger <inline-formula>\\n<tex-math><?CDATA $ v_2 $?></tex-math>\\n<inline-graphic xlink:href=\\\"cpc_48_8_084106_M6.jpg\\\" xlink:type=\\\"simple\\\"></inline-graphic>\\n</inline-formula> of charm decayed leptons than bottom decayed leptons, indicating stronger energy loss of charm quarks than bottom quarks inside the QGP within our current model setup.\",\"PeriodicalId\":10250,\"journal\":{\"name\":\"中国物理C\",\"volume\":\"21 1\",\"pages\":\"\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2024-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"中国物理C\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1088/1674-1137/ad4c59\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"PHYSICS, NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"中国物理C","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1088/1674-1137/ad4c59","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSICS, NUCLEAR","Score":null,"Total":0}
Quenching and flow of charm and bottom quarks via semi-leptonic decay of D and B mesons in Pb+Pb collisions at the LHC* * Supported in part by the National Natural Science Foundation of China (12225503, 11935007, 11890710, 11890711, 12175122, 2021-867). W.-J. X. is supported in part by China Postdoctoral Science Foundation (2023M742099). Some of the calculations were performed in the Nuclear Science Computing Center at Central China Normal University (NSC3), Wuhan, Hubei, China
Heavy flavor particles provide important probes of the microscopic structure and thermodynamic properties of the quark-gluon plasma (QGP) produced in high-energy nucleus-nucleus collisions. We studied the energy loss and flow of charm and bottom quarks inside the QGP via the nuclear modification factor () and elliptic flow coefficient () of their decayed leptons in heavy-ion collisions at the LHC. The dynamical evolution of the QGP was performed using the CLVisc (3+1)-dimensional viscous hydrodynamics model; the evolution of heavy quarks inside the QGP was simulated with our improved Langevin model that considers both collisional and radiative energy loss of heavy quarks; the hadronization of heavy quarks was simulated via our hybrid coalescence-fragmentation model; and the semi-leptonic decay of D and B mesons was simulated via PYTHIA. Using the same spatial diffusion coefficient for charm and bottom quarks, we obtained smaller and larger of charm decayed leptons than bottom decayed leptons, indicating stronger energy loss of charm quarks than bottom quarks inside the QGP within our current model setup.
期刊介绍:
Chinese Physics C covers the latest developments and achievements in the theory, experiment and applications of:
Particle physics;
Nuclear physics;
Particle and nuclear astrophysics;
Cosmology;
Accelerator physics.
The journal publishes original research papers, letters and reviews. The Letters section covers short reports on the latest important scientific results, published as quickly as possible. Such breakthrough research articles are a high priority for publication.
The Editorial Board is composed of about fifty distinguished physicists, who are responsible for the review of submitted papers and who ensure the scientific quality of the journal.
The journal has been awarded the Chinese Academy of Sciences ‘Excellent Journal’ award multiple times, and is recognized as one of China''s top one hundred key scientific periodicals by the General Administration of News and Publications.