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arXiv 2307.09640hep-phnucl-exnucl-th
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夸克-胶子等离子体中重味夸克的多尺度演化

Multiscale evolution of heavy flavor in the QGP

G. Vujanovic, A. Angerami, R. Arora, S. A. Bass, S. Cao, Y. Chen, T. Dai, L. Du, R. Ehlers, H. Elfner, W. Fan, R. J. Fries, C. Gale, Y. He, M. Heffernan, U. Hei… 展开作者

G. Vujanovic, A. Angerami, R. Arora, S. A. Bass, S. Cao, Y. Chen, T. Dai, L. Du, R. Ehlers, H. Elfner, W. Fan, R. J. Fries, C. Gale, Y. He, M. Heffernan, U. Heinz, B. V. Jacak, P. M. Jacobs, S. Jeon, Y. Ji, L. Kasper, M. Kordell, A. Kumar, J. Latessa, Y. -J. Lee, R. Lemmon, D. Liyanage, A. Lopez, M. Luzum, A. Majumder, S. Mak, A. Mankolli, C. Martin, H. Mehryar, T. Mengel, J. Mulligan, C. Nattrass, J. Norman, J. -F. Paquet, C. Parker, J. H. Putschke, G. Roland, B. Schenke, L. Schwiebert, A. Sengupta, C. Shen, C. Sirimanna, D. Soeder, R. A. Soltz, I. Soudi, M. Strickland, Y. Tachibana, J. Velkovska, X. -N. Wang, W. Zhao

AI总结:

本文利用JETSCAPE框架研究QGP中重味夸克喷注的多尺度演化,揭示重夸克质量对胶子辐射、散射及能量损失的影响,并强调重味对产生的重要性。

摘要:

喷注在夸克-胶子等离子体(QGP)中穿行时的簇射发展动力学是一个多尺度过程,其中重味夸克质量是一个重要的尺度。在QGP中喷注演化的高虚度阶段,重味夸克的胶子发射因重夸克质量而受到修正。介质诱导的重味辐射对微观过程(例如扩散)敏感,本研究对其虚度依赖性进行了唯象探索。在簇射演化的较低虚度部分,即当质量与部分子的虚度相当时,重夸克的散射和辐射过程不同于轻夸克。本文探索了这些机制对QGP中重味标记簇射的簇射发展的影响。此外,这项多尺度研究考察了重味的动力学对产生(通过虚胶子劈裂)及其在QGP中的后续演化,这是其他方式无法实现的。使用JETSCAPE框架进行了现实的逐事件模拟。与介质的能量-动量交换采用弱耦合反冲方法进行。利用领头强子和开放重味观测量,探索了重夸克与轻夸克能量损失机制的差异,同时强调了重味对产生的重要性以及未来的研究方向。

英文摘要:

Shower development dynamics for a jet traveling through the quark-gluon plasma (QGP) is a multiscale process, where the heavy flavor mass is an important scale. During the high virtuality portion of the jet evolution in the QGP, emission of gluons from a heavy flavor is modified owing to heavy quark mass. Medium-induced radiation of heavy flavor is sensitive to microscopic processes (e.g. diffusion), whose virtuality dependence is phenomenologically explored in this study. In the lower virtuality part of shower evolution, i.e. when the mass is comparable to the virtuality of the parton, scattering and radiation processes of heavy quarks differ from light quarks. The effects of these mechanisms on shower development in heavy flavor tagged showers in the QGP is explored here. Furthermore, this multiscale study examines dynamical pair production of heavy flavor (via virtual gluon splittings) and their subsequent evolution in the QGP, which is not possible otherwise. A realistic event-by-event simulation is performed using the JETSCAPE framework. Energy-momentum exchange with the medium proceeds using a weak coupling recoil approach. Using leading hadron and open heavy flavor observables, differences in heavy versus light quark energy-loss mechanisms are explored, while the importance of heavy flavor pair production is highlighted along with future directions to study.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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