研究小碰撞系统中喷注与高 p_T 探针演化的多阶段框架
高能物理 - 唯象学
2023-11-02 v2 核实验
核理论
摘要
理解小系统中喷注与高 p_T 探针的修正需要软物理与硬物理的整合。我们介绍近期在扩展 JETSCAPE 框架以构建事件生成器方面的进展，该生成器包含软部分子与硬部分子之间的关联，用于研究小系统中的喷注可观测量。碰撞的多尺度物理被划分为不同阶段。硬散射首先由 Glauber 几何提供的二体碰撞位置处抽样得到。随后它们沿初态簇射在时空上向后传播，以获得碰撞前发起部分子的能量与动量。这些能量与动量随后从入射碰撞核子中扣除，用于软粒子产生，由 3D-Glauber + 流体力学 + 强子输运框架建模。这一新的混合方法（X-SCAPE）包含了小系统中喷注与软粒子产生之间的非平庸关联。我们用 p-p 碰撞中从低到高 p_T 的末态强子 p_T 谱标定该框架，再与 LHC 上 p-Pb 碰撞的谱进行比较。我们还给出了附加可观测量的结果，例如在前向与中快度下最硬喷注 p_T 的事件活动性分布，针对 p-p 与 p-Pb 碰撞两者。
引用
@article{arxiv.2308.02650,
title = {A multistage framework for studying the evolution of jets and high-$p_T$ probes in small collision systems},
author = {Abhijit Majumder and Aaron Angerami and Ritu Arora and Steffen Bass and Shanshan Cao and Yi Chen and Raymond Ehlers and Hannah Elfner and Wenkai Fan and Rainer J. Fries and Charles Gale and Yayun He and Ulrich Heinz and Barbara Jacak and Peter Jacobs and Sangyong Jeon and Yi Ji and Lauren Kasper and Michael Kordell and Amit Kumar and Joseph Latessa and Yen-Jie Lee and Roy Lemmon and Dananjaya Liyanage and Arthur Lopez and Matt Luzum and Simon Mak and Andi Mankolli and Christal Martin and Haydar Mehryar and Tanner Mengel and James Mulligan and Christine Nattrass and Jaime Norman and Jean-Francois Paquet and Cameron Parker and Joern H. Putschke and Gunther Roland and Bjoern Schenke and Loren Schwiebert and Arjun Sengupta and Chun Shen and Chathuranga Sirimanna and Ron A. Soltz and Ismail Soudi and Michael Strickland and Yasuki Tachibana and Julia Velkovska and Gojko Vujanovic and Xin-Nian Wang and Wenbin Zhao},
journal= {arXiv preprint arXiv:2308.02650},
year = {2023}
}
备注
6 pages, 6 figures, Proceedings of Hard Probes 2023, 26-31 March 2023 Aschaffenburg, Germany