华中师范大学学报（自然科学版）
華中師範大學學報（自然科學版）
화중사범대학학보（자연과학판）
JOURNAL OF CENTRAL CHINA NORMAL UNIVERSITY(NATURAL SCIENCES)
2005年
4期
482-486
,共5页
高能重离子碰撞%光锥路径积分(LCPI)方法%诱导胶子辐射%重夸克能量损失
高能重離子踫撞%光錐路徑積分(LCPI)方法%誘導膠子輻射%重誇剋能量損失
고능중리자팽당%광추로경적분(LCPI)방법%유도효자복사%중과극능량손실
high energy heavy-ion collision%light-cone path integral approach%induced gluon radiation%heavy quark energy loss
基于G-W模型,讨论了高能重离子碰撞中热密QCD介质诱导胶子辐射所导致的部分子能量损失;采用光锥路径积分(LCPI)方法研究了有限的夸克胶子等离子体(QGP)区域中重夸克能量损失,导出了计算能量损失的解析表达式.计算结果显示,考虑了质量效应的重夸克辐射能量损失较忽略质量的轻夸克辐射能量损失有明显的压低;对高能夸克,其辐射能量损失与介质长度的平方成正比,随着能量的降低,平方关系变为线性依赖.
基于G-W模型,討論瞭高能重離子踫撞中熱密QCD介質誘導膠子輻射所導緻的部分子能量損失;採用光錐路徑積分(LCPI)方法研究瞭有限的誇剋膠子等離子體(QGP)區域中重誇剋能量損失,導齣瞭計算能量損失的解析錶達式.計算結果顯示,攷慮瞭質量效應的重誇剋輻射能量損失較忽略質量的輕誇剋輻射能量損失有明顯的壓低;對高能誇剋,其輻射能量損失與介質長度的平方成正比,隨著能量的降低,平方關繫變為線性依賴.
기우G-W모형,토론료고능중리자팽당중열밀QCD개질유도효자복사소도치적부분자능량손실;채용광추로경적분(LCPI)방법연구료유한적과극효자등리자체(QGP)구역중중과극능량손실,도출료계산능량손실적해석표체식.계산결과현시,고필료질량효응적중과극복사능량손실교홀략질량적경과극복사능량손실유명현적압저;대고능과극,기복사능량손실여개질장도적평방성정비,수착능량적강저,평방관계변위선성의뢰.
Based on G-W model and the light-cone path integral approach, induced gluon radiation and energy loss of heavy quark in dense QCD medium are discussed. An analytical formula of the energy loss of heavy quark is derived. The results show that the quark energy loss obviously depends on the mass of quark, i. e. a remarkable suppression occurs in the case of heavy quark comparing to a light one. The radiative energy loss of energetic quark is proportional to L2, where L is the length of the medium. The dependence of energy loss on L2 turns to L with decreasing quark energy.
