TauSpinner program for studies on spin effect in tau production at the LHC
TauSpinner program for studies on spin effect in tau production at the LHC
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TauSpinner 计划，用于研究大型强子对撞机 tau 生成中的自旋效应
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Z. Was
中科院分区：
文献类型：
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作者：
Z. Czyczula;T. Przedzinski;Z. Was
在大型强子对撞机(LHC)上，涉及到tau轻子的终态是寻找新粒子的重要组成部分。在蒙特卡罗(MC)模拟中，对tau自旋效应的适当处理对于理解探测器的接受程度以及测量tau极化和tau自旋关联是很重要的。在本笔记中，我们提供了一个用于模拟自旋效果的TauSpner包。它依赖于牛星及其衰变产物的四个动量，这在模拟和实验数据中都是可用的。玻色子衰变到τ−τ+或τ±ν对的味道和四动量需要知道。在Z/γ∗情况下，初态夸克组态是由中间玻色子运动学和部分子分布函数(Pdf)确定的。TauSpner是第一个适用于模拟嵌入tau的样品中的tau自旋效应的算法。它也是第一个为用户提供在分析级别模拟所需旋转效果的灵活性的工具。还提供了将tau螺旋度状态归因于先前生成的样本的算法。
Final states involving tau leptons are important components of searches for new particles at the Large Hadron Collider (LHC). A proper treatment of tau spin effects in the Monte Carlo (MC) simulations is important for understanding the detector acceptance as well as for the measurements of tau polarization and tau spin correlations. In this note we present a TauSpinner package designed to simulate the spin effects. It relies on the four-momenta of the taus and their decay products, which are available both in simulated and experimental data. The flavor and the four-momentum of the boson decaying to the τ−τ+ or τ±ν pair need to be known. In the Z/γ∗ case the initial state quark configuration is attributed from the intermediate boson kinematics, and the parton distribution functions (PDF’s). TauSpinner is the first algorithm suitable for emulation of tau spin effects in tau-embedded samples. It is also the first tool that offers the user the flexibility to simulate a desired spin effect at the analysis level. An algorithm to attribute tau helicity states to a previously generated sample is also provided.
DOI：
10.1140/epjc/s10052-008-0610-x
发表时间：
2007-11
期刊：
The European Physical Journal C
影响因子：
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作者：
A. Sherstnev;R. Thorne
通讯作者：
A. Sherstnev;R. Thorne