强子碰撞中平均横动量的多重数分布随截断的变化

Variation of Multiplicity Distributions for Mean Transverse Momentum with Cutoff in Hardon-Hardon Collisions

利用三火球模型，对 ＝22GeV情况下，强子碰撞中平均横动量的多重数分布曲线斜率、随横动量截断值的增加由负转变为正进行研究的结果表明，是侧边火球产生强子的平均横动量，随横动量截断值的增加的增幅大于中心火球产生强子的平均横动量的增幅而出现的．

Using the three-fireball model, the multiplicity distributions for mean transverse momentum in hardon-hardon collisions at is investigated. We find that the change from negative to positive with increasing the transverse momentum cutoff comes from the following fact the rising scope of mean transverse momentum of hardon produced by side-fire balls with increasing the cutoff is greater than that of central fire balls.