Pronounced Fluctuations of Target Fragments in Forward Hemisphere Only in Ultra Relativistic Nuclear Collision  

作　　者：Dipak Ghosh Argha Dev 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6期1441-1444,共4页中国物理快报（英文版）

摘　　要：Dynamical fluctuation of target evaporated black particles is investigated in both forward and backward hemispheres within the framework of multi-dimensional factorial moment methodology using the brilliant concept of the Hurst exponent. We analyse the black particles emitted in ^32S-AgBr interactions at 200AGeV and it is evident that the dynamical fluctuation in the backward hemisphere is self-affine. In the forward hemisphere, dynamical fluctuation is self-similar but not self-affine. However, study indicates that the fluctuation in the forward hemisphere is more pronounced than that in backward hemisphere.Dynamical fluctuation of target evaporated black particles is investigated in both forward and backward hemispheres within the framework of multi-dimensional factorial moment methodology using the brilliant concept of the Hurst exponent. We analyse the black particles emitted in ^32S-AgBr interactions at 200AGeV and it is evident that the dynamical fluctuation in the backward hemisphere is self-affine. In the forward hemisphere, dynamical fluctuation is self-similar but not self-affine. However, study indicates that the fluctuation in the forward hemisphere is more pronounced than that in backward hemisphere.

关 键 词：HEAVY-ION COLLISIONS SELF-AFFINE PHASE-SPACE MULTIPARTICLE PRODUCTION HIGH-ENERGY MULTIPLICITY FLUCTUATION HADRON COLLISIONS COLLECTIVE-FLOW INTERMITTENCY 

分 类 号：O571[理学—粒子物理与原子核物理]