Glauber gluon effects in soft collinear factorization  

作　　者：Gao-Liang Zhou Zheng-Xin Yan Xin Zhang Feng Li 

机构地区：[1]College of Science,Xi'an University of Science and Technology,Xi'an 710054,China [2]College of Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

出　　处：《Communications in Theoretical Physics》2022年第11期106-135,共30页理论物理通讯（英文版）

基　　金：supported by The National Nature Science Foundation of China under Grant No.11805151;The Scientific Research Foundation for the Doctoral Program of Xi’an University of Science and Technology under Grant No.6310116055;The Scientific Fostering Foundation of Xi’an University of Science and Technology under Grant No.201709;supported by The Department of Shanxi Province Natural Science Foundation of China under Grant No.2015JM1027;supported by China Postdoctoral Foundation under Grant No.2015M581824,20161001;International Postdoctoral Exchange Fellowship Program between JUELICH and OCPC。

摘　　要：Effects of Glauber gluons,which cause the elastic scattering process between different jets,are studied in the frame of soft-collinear effective theory.Glauber modes are added into the action before being integrated out,which is helpful in studies on the Glauber couplings of collinear and soft particles.It is proved that the final state interactions cancel out for processes inclusive enough.So are interactions with the light cone coordinates x^(+)and x^(-)greater than those of the hard collision.The eikonalization of Glauber couplings of active particles and absorption of these couplings into soft and collinear Wilson lines are discussed,which is related to the loop level definitions of Glauber gluons here.The active-spectator coherence is proved to be harmless to the inclusive summation of spectator-spectator and spectator-soft Glauber exchanges.Based on this result,spectator-spectator and spectator-soft Glauber exchanges cancel out in the processes considered here.Graphic aspects of the cancellation are also discussed to explain relations between the graphic and operator level cancellation of Glauber gluons.

关 键 词：soft-collinear effective theory QCD factorization Glauber gluons 

分 类 号：O572.243[理学—粒子物理与原子核物理]