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Hadronic interactions: From LHC to Ultra-High Energy Cosmic Rays

强子相互作用：从大型强子对撞机到超高能宇宙射线

基本信息

批准号：
252403571
负责人：
Dr. Sergey Ostapchenko, Ph.D.
金额：
--
依托单位：
Institut für Theoretische Physik
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/252403571?language=en
关键词：
Hadronic interactions LHC Ultra Energy

项目摘要

The interpretation of high energy cosmic ray data and the solution of the enigma of the origin of ultra-high energy cosmic rays depend crucially on the validity of hadronic Monte Carlo models which are required for the description of the interactions of cosmic ray particles in the atmosphere. The project is aimed at the further development of a modern hadronic Monte Carlo generator, taking the full advantage of new theoretical approaches and of existing and forthcoming accelerator data. Core element of this improved Monte Carlo generator is the implementation of a self-consistent treatment of hadronic and nuclear collisions, based on the perturbative description of nonlinear interaction effects related to multi-parton interactions, into the existing QGSJET-II model. The model will be thoroughly tested and calibrated with relevant accelerator data, notably, from the Large Hadron Collider. It will be applied to the calculations of characteristics of cosmic ray induced extensive air showers. The results will be compared to experimental data of the Pierre Auger Observatory and conclusions on the nuclear composition of the ultra-high energy cosmic ray flux will be drawn. The interdisciplinary aspect of the project is twofold: First, modern theoretical approaches and accelerator data will be used to develop a reliable tool for high energy cosmic ray studies. Secondly, the developed model will have a vast range of applications in collider physics, e.g. in relation to studies of general minimum bias collisions in hadronic and nuclear interactions, soft and hard diffraction, and multi-parton interactions.

高能宇宙线数据的解释和超高能宇宙线起源之谜的解决关键取决于强子蒙特卡罗模型的有效性，这是描述宇宙线粒子在大气中的相互作用所必需的。该项目旨在充分利用新的理论方法以及现有和即将获得的加速器数据，进一步开发现代强子蒙特卡罗发生器。这种改进的Monte Carlo发生器的核心元素是实施的强子和核碰撞的自洽处理，基于微扰描述的非线性相互作用效应的多部分子相互作用，到现有的QGSJET-II模型。该模型将进行彻底的测试和校准与相关的加速器数据，特别是从大型强子对撞机。它将被应用于宇宙线引起的大范围空气簇射特性的计算。这些结果将与皮埃尔·俄歇天文台的实验数据进行比较，并将得出关于超高能宇宙射线通量的核组成的结论。该项目的跨学科方面有两个方面：首先，现代理论方法和加速器数据将用于开发高能宇宙射线研究的可靠工具。其次，所开发的模型将在对撞机物理学中有广泛的应用，例如，在强子和核相互作用，软和硬衍射，多部分子相互作用的一般最小偏差碰撞的研究。