标题： 中性粒子对产生相关的单光子和双光子事例生成器 显示英文标题

标题： Event generator for the single- and double-photon emission associated with neutrino pair-production

摘要： 一个新事件生成器被提出用于两个过程 e+e- -> nu nu-bar gamma 和 e+e- -> nu nu-bar gamma gamma，其中 nu 包括所有中微子种类。 由 GRACE 系统生成的单光子和双光子发射的精确矩阵元与 QED 部分子喷注（QEDPS）卷积，以处理初始态辐射（ISR）。 指出需要仔细处理以避免矩阵元和 ISR 部分之间的辐射光子的重复计数。 讨论了 grc-nu-nu-gamma 与 O(alpha) 计算和其他类似蒙特卡罗生成器在总截面和各种分布上的详细比较。 还研究了可能的异常三轻子玻色子耦合效应如何被观察到。 显示英文摘要

摘要： A new event generator is proposed for two processes e+e- -> nu nu-bar gamma and e+e- -> nu nu-bar gamma gamma where nu includes all the neutrino species. The exact matrix elements of single- and double-photon emission, generated by the GRACE system, are convoluted with the QED parton shower(QEDPS) to deal with the initial state radiations(ISR). It is pointed out that a careful treatment is required to avoid the double counting of the radiative photons between the matrix elements and the ISR part. A detailed comparison of grc-nu-nu-gamma with the O(alpha) calculations and other similar Monte Carlo generators is discussed on the total cross section and on various distributions. It is also examined how the possible effects of the anomalous triple-gauge-boson couplings can be observed.