Spatial distributions of magnetic field in the RHIC and LHC energy regions  

作　　者：钟洋 杨纯斌 蔡勖 冯笙琴 

机构地区：[1]Institute of Particle Physics, Central China Normal University [2]College of Science, China Three Gorges University [3]Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University

出　　处：《Chinese Physics C》2015年第10期61-67,共7页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11375069,11435054,11075061,11221504);Key Laboratory foundation of Quark and Lepton Physics(Hua-Zhong Normal University)(QLPL2014P01)

摘　　要：Relativistic heavy-ion collisions can produce extremely strong magnetic fields in the collision regions. The spatial variation features of the magnetic fields are analyzed in detail for non-central Pb Pb collisions at LHC at √SNN= 900, 2760 and 7000 GeV and Au-Au collisions at RHIC at √SNN=62.4, 130 and 200 GeV. The dependencies of magnetic field on proper time, collision energies and impact parameters are investigated in this paper. It is shown that an enormous and highly inhomogeneous spatial distribution magnetic field can indeed be created in off-centre relativistic heavy-ion collisions in RHIC and LHC energy regions. The enormous magnetic field is produced just after the collision, and the magnitude of magnetic field of the LHC energy region is larger than that of the RHIC energy region at small proper time. It is found that the magnetic field in the LHC energy region decreases more quickly with the increase of proper time than that of the RHIC energy region.Relativistic heavy-ion collisions can produce extremely strong magnetic fields in the collision regions. The spatial variation features of the magnetic fields are analyzed in detail for non-central Pb Pb collisions at LHC at √SNN= 900, 2760 and 7000 GeV and Au-Au collisions at RHIC at √SNN=62.4, 130 and 200 GeV. The dependencies of magnetic field on proper time, collision energies and impact parameters are investigated in this paper. It is shown that an enormous and highly inhomogeneous spatial distribution magnetic field can indeed be created in off-centre relativistic heavy-ion collisions in RHIC and LHC energy regions. The enormous magnetic field is produced just after the collision, and the magnitude of magnetic field of the LHC energy region is larger than that of the RHIC energy region at small proper time. It is found that the magnetic field in the LHC energy region decreases more quickly with the increase of proper time than that of the RHIC energy region.

关 键 词：the distribution of magnetic field non-central collision 

分 类 号：O571.6[理学—粒子物理与原子核物理] TD457[理学—物理]