原子核物理评论
原子覈物理評論
원자핵물리평론
Nuclear Physics Review
2014年
1期
8-13
,共6页
修正的Landau流体力学模型%带头粒子%高斯分布
脩正的Landau流體力學模型%帶頭粒子%高斯分佈
수정적Landau류체역학모형%대두입자%고사분포
revised Landau hydrodynamic model%leading particle%Gaussian distribution
在p+p碰撞中,只有两个带头粒子,一个处在弹碎裂区,另一个处在靶碎裂区。研究表明:如同核-核碰撞一样,修正的Landau流体力学模型本身不足以对p+p碰撞中带电粒子赝快度分布的实验测量给出很好的描述,只有在考虑了带头粒子效应后,理论才能很好地与实验结果相一致。在√s=23.6~900 GeV的整个能量范围内,理论与现有实验数据符合得很好。
在p+p踫撞中,隻有兩箇帶頭粒子,一箇處在彈碎裂區,另一箇處在靶碎裂區。研究錶明:如同覈-覈踫撞一樣,脩正的Landau流體力學模型本身不足以對p+p踫撞中帶電粒子贗快度分佈的實驗測量給齣很好的描述,隻有在攷慮瞭帶頭粒子效應後,理論纔能很好地與實驗結果相一緻。在√s=23.6~900 GeV的整箇能量範圍內,理論與現有實驗數據符閤得很好。
재p+p팽당중,지유량개대두입자,일개처재탄쇄렬구,령일개처재파쇄렬구。연구표명:여동핵-핵팽당일양,수정적Landau류체역학모형본신불족이대p+p팽당중대전입자안쾌도분포적실험측량급출흔호적묘술,지유재고필료대두입자효응후,이론재능흔호지여실험결과상일치。재√s=23.6~900 GeV적정개능량범위내,이론여현유실험수거부합득흔호。
In a p+p collision, there are only two leading particles. One is in pro jectile fragmentation region, the other is in target fragmentation region. The investigation of present paper shows that, just like in nucleus-nucleus collisions, the revised Landau hydrodynamic model alone is not enough to have a good description to the measured pseudorapidity distributions of charged particles in p+p collisions. Only after the leading particles are taken into account as well, can the experimental data be matched up properly. The theoretical model works well in p+p collisions in the whole available energy region from√s=23.6 to 900 GeV.