( 3 ) the study of multiparticle dynamics , in 用mc模擬和實(shí)驗(yàn)研究發(fā)現(xiàn):能量為91
Another important phenomenon in high energy multiparticle production is the hadronic jets . the jets are selected using the durham algorithm 噴注事件各向異性動(dòng)力學(xué)起伏的這一特性,為圓錐形噴注的產(chǎn)生提供了一個(gè)標(biāo)度。
The cut of phase space , particle type , average multiparticle , etc . no dynamical fluctuation has been observed through event factorial moments analysis 可見(jiàn),通過(guò)對(duì)事件階乘矩erraticity的分析,根本就觀測(cè)不到任何動(dòng)力學(xué)起伏。
All the simulative results underestimate that of experimental data . this seems that the erraticity analysis of rapidity gaps can be used to check models in multiparticle production 發(fā)現(xiàn)模擬結(jié)果都與實(shí)驗(yàn)結(jié)果有較大的偏離;并且兩個(gè)產(chǎn)生器所得結(jié)果也有較大區(qū)別
, the fractal in space - time evolution in high energy h - h collisions is self - affine , which may trace back to the high anisotropy of phase space of multiparticle final states in these collisions 高能強(qiáng)子-強(qiáng)子碰撞多粒子末態(tài)的高度各向異性使得時(shí)空演化中的分形結(jié)構(gòu)表現(xiàn)為自仿射。
Making analogy with the " " spin - glass " phase in polymers , peschanski put forward the idea that there exists non - thermal phase transition in multiparticle systems . a parameter xq has been introduced to characterize the non - thermal phase transition 通過(guò)類比聚合體中的“自旋玻璃相” , peschanski提出隨機(jī)級(jí)聯(lián)的多粒子產(chǎn)生過(guò)程中存在非熱相變,并提出表征相變的特征參數(shù)_ q的公式。
In the second part of the thesis , the non - thermal phase transition in high energy collisions is studied in detail in the framework of random cascade model . the relation between the characteristic parameter xq of phase transition and the rank q of moment is obtained using monte carlo simulation , and the existence of two phases in self - similar cascading multiparticle systems is shown . the relation between the critical point qc of phase transition on the fluctuation parameter q is obtained and compared with the experimental results from na22 文章第二部分中,我們用隨機(jī)級(jí)聯(lián)模型對(duì)高能碰撞中的非熱相變作了仔細(xì)研究,用montecarlo模擬得到了表征相變的特征參數(shù)_ q與矩階數(shù)q之間的關(guān)系,證實(shí)了自相似多粒子系統(tǒng)中存在兩相,求出了相變點(diǎn)q = q _ c對(duì)起伏參數(shù)的依賴關(guān)系,并和na22實(shí)驗(yàn)結(jié)果進(jìn)行了比較。