Strong Self-Similar Fluctuations of Target Fragments in Ring-like Events in Ultra-Relativistic Nuclear Collision  

作　　者：Dipak Ghosh Argha Deb Samabrata Sarkar Prabir Kumar Haldar 

机构地区：[1]Nuclear and Particle Physics Research Centre, Department of Physics, Jadavpur University, Kolkata-700032, India

出　　处：《Chinese Physics Letters》2006年第11期2944-2947,共4页中国物理快报（英文版）

摘　　要：The intermittent fluctuation of target evaporated particles is studied in both ring-like and jet-like events emitted in ^32 S-emulsion interactions at 200 A Ge V within the framework of multi-dimensional factorial moment methodology using the concept of the Hurst exponent. It is observed that the intermittent fluctuation in the ring-like event is self-similar, whereas in the jet-like event fluctuation is self-affine. However, study indicates that the strength of fluctuation in the ring-like events is much stronger than that in the jet-like events.The intermittent fluctuation of target evaporated particles is studied in both ring-like and jet-like events emitted in ^32 S-emulsion interactions at 200 A Ge V within the framework of multi-dimensional factorial moment methodology using the concept of the Hurst exponent. It is observed that the intermittent fluctuation in the ring-like event is self-similar, whereas in the jet-like event fluctuation is self-affine. However, study indicates that the strength of fluctuation in the ring-like events is much stronger than that in the jet-like events.

关 键 词：HIGH-ENERGY MULTIPARTICLE PRODUCTION JET-LIKE INTERMITTENCY DISTRIBUTIONS ANNIHILATION PARTICLES MOMENTS GEV/C 

分 类 号：O57[理学—粒子物理与原子核物理]