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arXiv 0812.0604hep-ph
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弦分裂与色弦融合的时空图像

Space-time picture of the string fragmentation and the fusion of colour strings

V. V. Vechernin

摘要:

它表明,天真的两个阶段的方案,在强子和核碰撞在高能量的软多粒子生产,当在第一阶段的颜色字符串形成,并在第二阶段这些字符串,或其他一些(更高的颜色)字符串形成由于融合的主要字符串,正在衰减,发射观察到的粒子,遇到了一些困难,在试图分析的过程中的时空图片。简单的分析表明,主导的过程是弦的形成和衰变平行发生的过程--弦在相当小的长度上就已经分裂成两部分(大约1-2 fm在它的厘米。系统),然后这个过程在碎片中重复,等等。然而,事实证明,弦融合的想法与弦衰变的时空图像是可能一致的。在Artru-Mennessier弦碎裂模型的框架内,对高能单弦衰变产生的强子快度分布的均匀性给出了简单的解释,并得到了这种快度分布密度的解析估计。

英文摘要:

It is shown that naive two stage scenario of the soft multiparticle production in hadronic and nuclear collisions at high energy, when at first stage the colour strings are formed and at the second stage these strings, or some other (higher colour) strings formed due to fusion of primary strings, are decaying, emitting observed particles, encounters some difficulties at the attempt to analyse the space-time picture of the process. Simple analysis shows the dominant is the process when the formation and the decay of a string occur in parallel - a string breaks into two parts already at rather small length (about 1-2 fm in its c.m. system), then the process repeats in the pieces and so on. Nevertheless it is proved to be possible to agree the string fusion idea with the space-time picture of a string decay. In the framework of the Artru-Mennessier model of a string fragmentation the simple interpretation of the homogeneity of the rapidity distribution for hadrons produced from the decay of a single string at high energy is presented and the analytical estimate for the density of this rapidity distribution is obtained.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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