First Results from Hybrid Hadronization in Small and Large Systems-猫眼课题宝

DOI：

10.22323/1.387.0158

发表时间：

2020-09

期刊：

Proceedings of 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions — PoS(HardProbes2020)

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

M. Kordell;Angerami;S. Bass;S. Cao;Y. Chen;J. Coleman;L. Cunqueiro;T. Dai;L. Du;R. Ehlers;H. Elfner;D. Everett;W. Fan;R. Fries;C. Gale;F. Garza;Y. He;M. Heffernan;U. Heinz;B. Jacak;P. Jacobs;S. Jeon;W. Ke;E. Khalaj;B. Kim;A. Kumar;D. Liyanage;T. Luo;M. Luzum;A. Majumder;M. McNelis;J. Mulligan;C. Nattrass;D. Oliinychenko;L. Pang;C. Park;J. Paquet;J. Putschke;G. Roland;B. Schenke;L. Schwiebert;C. Shen;A. Silva;C. Sirimanna;R. Soltz;Y. Tachibana;G. Vujanovic;X. Wang;R. Wolpert;Y. Xu

“混合强子化”是一个新的部分子系统强子化的蒙特卡罗程序包。它平滑地结合了适用于相空间中部分子之间距离较小时的夸克复合，以及适用于稀部分子系统的弦碎裂，遵循Han等人[PRC 93，045207（2016）]概述的图片。混合强子化与PYTHIA 8集成，可以应用于从$e^++e^-$到$A+A$碰撞的各种系统。它采用部分子系统和它们的色流信息，例如来自蒙特卡罗部分子簇射发生器的信息作为输入。此外，如果为$A+A$碰撞提供热背景介质，则该包允许对有助于强子化的热部分子进行采样。Hybrid Hadronization可作为独立代码使用，自2.0版本以来也是JETSCAPE的一部分。在这些程序中，我们回顾了混合强子化的物理概念，并演示了用户如何使用各种部分子淋浴Monte卡洛斯的代码。本文将混合强子化与部分子簇射Monte卡洛斯MATTER和LBT相结合，计算了小系统和大系统中的强子化学和碎裂函数。特别是，我们讨论了可观察到的效果的重组的簇射部分子与热部分子。

"Hybrid Hadronization" is a new Monte Carlo package to hadronize systems of partons. It smoothly combines quark recombination applicable when distances between partons in phase space are small, and string fragmentation appropriate for dilute parton systems, following the picture outlined by Han et al. [PRC 93, 045207 (2016)]. Hybrid Hadronization integrates with PYTHIA 8 and can be applied to a variety of systems from $e^++e^-$ to $A+A$ collisions. It takes systems of partons and their color flow information, for example from a Monte Carlo parton shower generator, as input. In addition, if for $A+A$ collisions a thermal background medium is provided, the package allows sampling thermal partons that contribute to hadronization. Hybrid Hadronization is available for use as a standalone code and is also part of JETSCAPE since the 2.0 release. In these proceedings we review the physics concepts underlying Hybrid Hadronization and demonstrate how users can use the code with various parton shower Monte Carlos. We present calculations of hadron chemistry and fragmentation functions in small and large systems when Hybrid Hadronization is combined with parton shower Monte Carlos MATTER and LBT. In particular, we discuss observable effects of the recombination of shower partons with thermal partons.

First Results from Hybrid Hadronization in Small and Large Systems

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