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Global Characteristics of the Medium Produced in Ultra-High Energy Cosmic Ray Collisions

机译:超高能宇宙射线碰撞中产生的培养基的全局特征

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摘要

Estimations of some geometrical and bulk parameters are presented for the matter produced in various type collisions with ultra-high energy cosmic ray (UHECR) particles. Results for multiplicity density at midrapidity, decoupling time, and energy density are discussed for small and larger collision systems. Based on the analytic functions suggested previously elsewhere, estimations for a wide set of space-time quantities are obtained for emission region created in various particle collisions at energies of UHECR. The space particle densities at freeze-out are derived also and allow the possibility of novel features for secondary particle production like Bose-Einstein condensation at least for nuclear interactions with UHECR particles. The estimations obtained for global and geometrical parameters indicate the creation of deconfined quark-gluon matter with large enough volume and lifetime even in light nuclear collisions at UHECR energies. These quantitative results can be important for both the future collider experiments at center-of-mass energy frontier and the improvement of the phenomenological models for development of the cosmic ray cascades in ultra-high energy domain.
机译:为具有超高能宇宙射线(UHECR)颗粒的各种型碰撞产生的物质提出了一些几何和批量参数的估计。对于小型和较大的碰撞系统,讨论了多级,去耦时间和能量密度的多重密度的结果。基于以前在其他地方建议的分析函数的基础上,为在UHECH的能量的各种颗粒碰撞中产生的发射区域获得了广泛的时空量的估计。冻结的空间粒子密度也衍生起来,并且允许至少用于与uhecr颗粒的核相互作用等二次颗粒产生的新特征的可能性。为全球和几何参数获得的估计表明,即使在Uhecer Energies的轻微核碰撞中,也有足够大的体积和寿命的欺骗夸克 - 胶原物。这些定量结果对于群众中心能源前沿的未来碰撞器实验以及改善超高能域中的宇宙射线级联的现象学模型的改善。

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