Decomposition of the jet fragmentation function in high-energy heavy-ion collisions

Decomposition of the jet fragmentation function in high-energy heavy-ion collisions
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高能重离子碰撞中射流破碎函数的分解

DOI:
10.1103/physrevc.88.021902
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发表时间:
2013-06
期刊:
影响因子:
3.1
通讯作者:
Ma, Guo-Liang
Ma, Guo-Liang
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Ma, Guo-Liang

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基于多相输运模型,将CERN大型强子对撞机实验中Pb + Pb碰撞与p + p碰撞的喷流碎裂函数比值分解为两部分,分别对应于碎裂和聚并对喷流强子化的两个贡献.结果表明,在不同的xi = ln(1/z)范围内,两种喷注强子化机制之间存在着明显的竞争.提出了不同类型强子(介子和重子)的喷注碎裂函数,作为研究高能重离子碰撞中喷注硬化过程中碎裂与聚并竞争的一个很好的探针。
Based on a multiphase transport model, the measured jet fragmentation function ratio of Pb + Pb collisions to p + p collisions in CERN Large Hadron Collider experiments is decomposed into two parts, corresponding to the two contributions of jet hadronization from fragmentation and coalescence. The results suggest an existence of distinct competitions between two jet hadronization mechanisms for different xi = ln(1/z) ranges in different centrality bins. The jet fragmentation functions for different types of hadrons (mesons and baryons) are proposed as a good probe to study the competition between fragmentation and coalescence for the jet hardonization in high-energy heavy-ion collisions.
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发表时间: 2009
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