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arXiv 2501.16482hep-phnucl-exnucl-th
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Hybrid Hadronization —— 喷注介质内强子化研究

Hybrid Hadronization -- A Study of In-Medium Hadronization of Jets

A. Sengupta, R. J. Fries, M. Kordell, B. Kim, A. Angerami, R. Arora, S. A. Bass, Y. Chen, R. Datta, L. Du, R. Ehlers, H. Elfner, C. Gale, Y. He, B. V. Jacak, P.… 展开作者

A. Sengupta, R. J. Fries, M. Kordell, B. Kim, A. Angerami, R. Arora, S. A. Bass, Y. Chen, R. Datta, L. Du, R. Ehlers, H. Elfner, C. Gale, Y. He, B. V. Jacak, P. M. Jacobs, S. Jeon, Y. Ji, F. Jonas, L. Kasper, A. Kumar, R. Kunnawalkam-Elayavalli, J. Latessa, Y. -J. Lee, R. Lemmon, M. Luzum, A. Majumder, S. Mak, A. Mankolli, C. Martin, H. Mehryar, T. Mengel, C. Nattrass, J. Norman, C. Parker, J. -F. Paquet, J. H. Putschke, H. Roch, G. Roland, B. Schenke, L. Schwiebert, C. Shen, M. Singh, C. Sirimanna, D. Soeder, R. A. Soltz, I. Soudi, Y. Tachibana, J. Velkovska, G. Vujanovic, X. -N. Wang, X. Wu, W. Zhao

AI总结:

本研究基于JETSCAPE框架,系统探究了夸克胶子等离子体热浴对喷注部分子簇射强子化的影响,发现簇射部分子与热部分子存在显著重组相互作用,导致喷注强子的集体流转移和强子化学性质改变。

摘要:

QCD 喷注被认为是高能核碰撞中产生的夸克胶子等离子体的重要探针。如果它们在解禁闭介质内部发展,其部分子簇射会被显著改变。喷注的强子化也被认为会受到夸克和胶子存在的影响。我们对部分子热浴对部分子簇射强子化的影响进行了系统研究。我们使用 JETSCAPE 框架在真空中以及夸克胶子等离子体砖块中产生部分子簇射。砖块设置允许系统地改变重要参数,如等离子体的尺寸以及部分子的集体流。我们使用 Hybrid Hadronization 对部分子簇射进行强子化,该模型允许簇射部分子与热部分子形成弦,或直接与热部分子以及彼此进行重组。我们发现强子化过程中簇射部分子与热部分子之间存在大量相互作用,表明喷注与介质相互作用的自然延续。观察到的效应随介质尺寸增大而增强。集体流很容易从热部分子转移到产生的喷注强子上。我们还观察到强子化学性质的显著变化,这与存在夸克重组过程时的预期一致。

英文摘要:

QCD jets are considered important probes for quark gluon plasma created in collisions of nuclei at high energies. Their parton showers are significantly altered if they develop inside of a deconfined medium. Hadronization of jets is also thought to be affected by the presence of quarks and gluons. We present a systematic study of the effects of a thermal bath of partons on the hadronization of parton showers. We use the JETSCAPE framework to create parton showers both in vacuum and in a brick of quark gluon plasma. The brick setup allows important parameters, like the size of the plasma as well as the collective flow of partons, to be varied systematically. We hadronize the parton showers using Hybrid Hadronization, which permits shower partons to form strings with thermal partons, or to recombine directly with thermal partons as well as with each other. We find a sizeable amount of interaction of shower partons with thermal partons during hadronization, indicating a natural continuation of the interaction of jet and medium during this stage. The observed effects grow with the size of the medium. Collective flow easily transfers from the thermal partons onto the emerging jet hadrons. We also see a significant change in hadron chemistry as expected in the presence of quark recombination processes.

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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