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arXiv 1902.09265hep-ph
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强子碰撞中的核心-冕区效应与空气簇射中的μ子产生

Core-corona effect in hadron collisions and muon production in air showers

Sebastian Baur, Hans Dembinski, Matias Perlin, Tanguy Pierog, Ralf Ulrich, Klaus Werner

AI总结:

本文提出LHC观测到的核心-冕区效应中统计强子化机制可解释高能宇宙线模拟中μ子产生不足,并建议以电磁粒子与强子能量比作为赝快度和中心带电粒子多重数函数的实验可观测量。

摘要:

众所周知,强子碰撞中进入电磁粒子(电子和光子,包括来自衰变的粒子)的能量比例对空气簇射级联中产生的μ子数量有重大影响。LHC上的最新测量确认了一些特征,这些特征可联系到不同底层粒子产生机制的混合,例如在预期的弦碎裂(冕区)之外还存在集体统计强子化(核心)。由于这两种机制具有不同的电磁能量比例,我们提出了强子碰撞中的统计强子化与空气簇射中μ子产生之间的一种可能联系。采用一种新颖方法,我们证明在LHC上观测到的核心-冕区效应可能是解决高能宇宙线模拟中μ子产生不足问题的部分方案。为检验这一假设,我们利用大赝快度范围内的量热信息并结合中心径迹的多重数,研究高能强子碰撞中的强子化过程。作为实验可观测量,我们提出电磁粒子相对于强子的能量产生,作为赝快度和中心带电粒子多重数的函数。

英文摘要:

It is very well known that the fraction of energy in a hadron collision going into electromagnetic particles (electrons and photons, including those from decays) has a large impact on the number of muons produced in air shower cascades. Recent measurements at the LHC confirm features that can be linked to a mixture of different underlying particle production mechanisms such as a collective statistical hadronization (core) in addition to the expected string fragmentation (corona). Since the two mechanisms have a different electromagnetic energy fraction, we present a possible connection between statistical hadronization in hadron collisions and muon production in air showers. Using a novel approach, we demonstrate that the core-corona effect as observed at the LHC could be part of the solution for the lack of muon production in simulations of high energy cosmic rays. To probe this hypothesis, we study hadronization in high energy hadron collisions using calorimetric information over a large range of pseudorapidity in combination with the multiplicity of central tracks. As an experimental observable, we propose the production of energy in electromagnetic particles versus hadrons, as a function of pseudorapidity and central charged particle multiplicity.

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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