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应用多源热模型研究了相对论性重离子对撞机(RHIC)上PHENIX合作组测得的每核子对质心能量√s NN=200 GeV的氘-金(d+Au)碰撞中快度长程方位角关联,和大型强子对撞机(LHC)上CMS合作组测得的质心能量√s=0.9,2.36,7 TeV的质子质子(p+p)碰撞中高多重数短程赝快度关联,在误差范围内模型结果很好地重现了实验数据。用4个参数分析了长程方位角关联,结果表明,参数可以清楚地显示出脊结构的变化趋势,说明脊结构与集体效应、流体力学流效应、粒子对的横动量及信号等有关。用3个参数分析了小系统高多重数短程赝快度关联,结果表明,参数σ和c3与能量相关,能量越大,两粒子越靠近,关联越强。
The multi-source thermal model was used to study the fast long-range orientation of deuterium-gold (d + Au) collisions per core to the centroid energy √s NN = 200 GeV measured by the PHENIX cooperative group on a relativistic heavy ion collider (RHIC) Angle correlation and high multiple number short-range pseudo-fast correlation in the proton proton (p + p) collisions of the centroid energy √s = 0.9, 2.36 and 7 TeV measured by the CMS cooperation group on the Large Hadron Collider (LHC) The model results within the error range reproduce the experimental data very well. Four parameters were used to analyze the long-range azimuthal correlation. The results show that the parameters can clearly show the trend of ridge structure, indicating that the ridge structure is related to the collective effect, the hydrodynamic flow effect, the traversing amount of the particle pair and the signal. Three parameters were used to analyze the correlation of short-range and high-multiplicity short-range pseudorapidity in small system. The results show that the parameters σ and c3 are related to the energy, the larger the energy is, the closer the two particles are, the stronger the correlation is.