光子质子反应中Φ介子分布的统计分析  

Statistical Analysis of Φ Meson Distributions in Reaction

作　　者：王丽丽[1] 康俊慧 WANG Lili;KANG Junhui(Department of Foundation, Business College of Shanxi University, Taiyuan 030031, China;College of Physics and Electronic Engineering, Shanxi University, Tai yuan 030006, China)

机构地区：[1]山西大学商务学院基础部,山西太原030031 [2]山西大学理电子工程学院,山西太原030006

出　　处：《山西大学学报（自然科学版）》2018年第2期345-350,共6页Journal of Shanxi University(Natural Science Edition)

基　　金：山西省自然科学基金(2013021006)

摘　　要：高能核碰撞中的奇异性增强被认为是夸克-胶子等离子体(QGP)形成的信号之一。作为一种隐性奇异粒子,CLAS合作组系统地测量了不同束流能量下γp→pФ(KSKL)反应中的Φ介子。文章采用统计分析方法,结合强子化后的多源产生图像,讨论了高能碰撞中Φ介子的产生机制。这些Φ介子来自于多个发射源,且源间的相互作用不可忽略。通过研究γp→pФ(KSKL)反应中产生截面与极角的依赖关系,得到了发射源的形变情况以及粒子的统计性质。The strangeness enhancement is regarded as a signature of the quark-gluon plasma（QGP）formation in high-energy collisions.As a particle with hidden strangeness,the CLAS collaboration has measured Φ mesons in the reactionγp→pФ（KSKL）at different energies.Combined with a multi-source model,we apply statistical methods in the investigation of Φ meson production in high-energy collisions.The Φ mesons emit from different sources and the interactions between the sources need be considered.By the polar angle dependence of meson cross section,the deformation of emission sources and the statistical property of particles are obtained.

关 键 词：统计分析 介子产生 光子束流能量 

分 类 号：O414[理学—理论物理]