共查询到15条相似文献,搜索用时 156 毫秒
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利用分形来研究高能碰撞多粒子产生机制是新兴的交叉科学,而获取多粒子产生的多重分形谱对了解高能碰撞机制很重要.本文将改进的连续阶数阶乘矩方法应用于40 0GeV/cpp碰撞多重产生的自仿射分析中,首次得到了自仿射多重分形谱. 相似文献
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Wang Shaoshun Zhang Jie Xiao Chenguo Ye Yunxiu Zhong Yu Shen Tianguang 《中国物理C(英文版)》1995,19(11):968-973
The fractal behaviour of multiplicity production in 400 GeV/c pp collisions is analyzed using the modified multifractal moments.The generalized dimensions Dq,q=2—5,are calculated.A comparison with the results obtained by the method of scaled factorial moments has been made. The results show that the multifractal character is observed.The fractal analysis method proposed by Fujio Takagi has been tested. 相似文献
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Shaoshun Wang Jie Zhang Chenguo Xiao Yunxiu Ye 《Zeitschrift fur Physik C Particles and Fields》1995,68(3):415-423
The pseudorapidity distribution of charged particles produced in pp collisions at 400 GeV/c was measured by using LEBC films offered by CERN NA27 collaboration. The scaled factorial cumulant moments have been calculated. The results show that the second order cumulants have positive values, while the cumulants of higher order are consistent with zero except for the situation ofn ch ≥ 4 events, where the third-order cumulants have positive values beyond the statistical uncertainties. It means that the observed increase of the higherorder factorial momentsF q is almost due to the dynamical two-particle correlation in pp collisions at 400 GeV/c. The cumulant moments also have been calculated by star correlation integrals. It significantly reduced the statistical errors, especially for higher order cumulants. From Monte Carlo events with the same single particle spectrum and no correlations, we observed that for broad mixed-multiplicity distributions, a significant part ofK 2 is coming from the single-particle fluctuation due to the fluctuating multiplicity. 相似文献
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Wang Shaoshun Li Zuhao Zhang Jie Xiao Chenguo Ye Yunxiu Shen Tianguang 《中国物理C(英文版)》1996,20(4):297-303
The azimuthal Structure of partivles produced in pp collisions at 400 GeV/c was investigated by using different methods.The analytic results of one and two-dimensional scaled factorial moments indicate that the intermittent effect is stronger for two-dimensional analysis.It is not contradictory with jet-like multiparticle production mechanism. However,the analytic results of other methods show that the azimuthal structure seems to be of stochastic nature and no evidence of the jet-like multiparticle production mechanism is observed. 相似文献
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对400GeV/c pp碰撞多粒子产生的实验数据作了不稳定性分析.计算了新的不稳定性参数.将它们与曹珍和华家照利用软相互作用模型ECOMB模拟NA22能量范围的强子一强子碰撞实验所得到的结果相比较,相似性清楚可见.这表明ECOMB模型是一个软相互作用多粒子产生模型.它能重现高能强子碰撞末态事例结构的涨落. 相似文献