Entropy and equilibrium property of QCD-instanton induced final state in deep-inelastic scattering  

作　　者：邓为炳 陆丁 张纪英 许明梅 Boris Levchenko 刘连寿 

机构地区：[1]Training Base for Research and Teaching in Fundamental Sciences(Physics)College of Physical Science and Technology Huazhong Normal University [2]Institute of Particle Physics Huazhong Normal University [3]Skobeltsyn Institute of Nuclear Physics Moscow State University,119992 Moscow,Russia

出　　处：《Chinese Physics C》2008年第1期13-17,共5页中国物理C（英文版）

基　　金：Supported by NSFC-RFBR Cooperative Research Project(10475030,05-02-39028-NNSF-a);NSFC(10375025,90503001);Ministry of Education of China NO CFKSTIP-704035

摘　　要：The scaling and additivity properties of Rényi entropy in rapidity space of the instanton final state （IFS） and current jet identified by the r-sorting method from the QCDINS Monte Carlo event sample are studied. Asymptotic scaling of the Rényi entropy H2 is observed for the IFS while H2 for the current jet jtends to saturation with decreasing phase space scale. Furthermore, it is found that the additivity of H2 holds well for the IFS in narrow rapidity windows at different positions. These results indicate that the IFS produced in the instanton-induced process of deep inelastic scattering has reached local equilibrium.The scaling and additivity properties of Rényi entropy in rapidity space of the instanton final state （IFS） and current jet identified by the r-sorting method from the QCDINS Monte Carlo event sample are studied. Asymptotic scaling of the Rényi entropy H2 is observed for the IFS while H2 for the current jet jtends to saturation with decreasing phase space scale. Furthermore, it is found that the additivity of H2 holds well for the IFS in narrow rapidity windows at different positions. These results indicate that the IFS produced in the instanton-induced process of deep inelastic scattering has reached local equilibrium.

关 键 词：INSTANTON quark-gluon fusion deep-inelastic scattering ENTROPY local equilibrium 

分 类 号：O572.2[理学—粒子物理与原子核物理]