Regge-cascade hadronization
Regge-cascade hadronization
复制标题
雷格级联强子化
DOI：
10.1140/epjc/s10052-006-0040-6
复制
发表时间：
2006
影响因子：
4.4
通讯作者：
K. Odagiri
中科院分区：
文献类型：
--
作者：
K. Odagiri
我们认为彩色部分向彩色单线态强子的演化近似分解为扩展的部分阵雨相和彩色单线态共振极相。色连通部分转化为强子的振幅必然与雷格极振幅相似，因为q-bar共振振幅与雷格极振幅是对偶关系。n点Veneziano振幅的“regge级联”分解特性进一步证明了该协议的合理性。后一种分解性质，反过来，允许从（1->2）链路振幅以振幅平方分解形式构造一般的多强子振幅。我们提出了一种适合蒙特卡罗模拟的串级衰减结构算法，该算法在横向动量上有序。我们在Herwig++中对这个过程做了一个简单的实现，对LEP中事件形状分布的描述做了一些改进。
We argue that the evolution of coloured partons into colour-singlet hadrons has approximate factorization into an extended parton-shower phase and a colour-singlet resonance--pole phase. The amplitude for the conversion of colour connected partons into hadrons necessarily resembles Regge-pole amplitudes since qq-bar resonance amplitudes and Regge-pole amplitudes are related by duality. A `Regge-cascade' factorization property of the N-point Veneziano amplitude provides further justification of this protocol. This latter factorization property, in turn, allows the construction of general multi-hadron amplitudes in amplitude-squared factorized form from (1->2) link amplitudes. We suggest an algorithm with cascade-decay configuration, ordered in the transverse momentum, suitable for Monte-Carlo simulation. We make a simple implementation of this procedure in Herwig++, obtaining some improvement to the description of the event-shape distributions at LEP.