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首页> 外文期刊>Computer physics communications >The Monte Carlo program KoralW version 1.51 and the concurrent Monte Carlo KoralW&YFSWW3 with all background graphs and first-order corrections to W-pair production
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The Monte Carlo program KoralW version 1.51 and the concurrent Monte Carlo KoralW&YFSWW3 with all background graphs and first-order corrections to W-pair production

机译：蒙特卡洛程序KoralW版本1.51和并发的蒙特卡洛KoralW＆YFSWW3，带有所有背景图和W对生产的一阶校正

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摘要

The version 1.51 of the Monte Carlo (MC) program KoralW for all e~+e~- → f_1(f-bar)_2f_3(f-bar)_4 processes is presented. The most important change from the previous version 1.42 is the facility for writing AC events on the mass storage device and reprocessing them later on. In the reprocessing parameters of the Standard Model may be modified in order to fit them to experimental data. Another important new feature is the possibility of including complete O(α) corrections to double-resonant W-pair component-processes in addition to all background (non-WW) graphs. The inclusion is done with the help of the YFSWW3 MC event generator for fully exclusive differential distributions (event per event). Technically, it is done in such a way that YFSWW3 runs concurrently with KoralW as a separate slave process, reading momenta of the MC event generated by KoralW and returning the correction weight to KoralW. The latter introduces the O(α) correction using this weight, and finishes processing the event (rejection due to total AC weight, hadronization, etc.) The communication between KoralW and YFSWW3 is done with the help of the FIFO facility of the UNIX/Linux operating system. This does not require any modifications of the FORTRAN source codes. From the user's point of view, the resulting Concurrent MC event generator KoralW&YFSWW3 looks as a regular single MC event generator with all the standard features.
机译：提出了适用于所有e〜+ e〜-→f_1（f-bar）_2f_3（f-bar）_4过程的Monte Carlo（MC）程序KoralW的版本1.51。与先前版本1.42相比，最重要的更改是用于在大容量存储设备上写入AC事件并稍后对其进行重新处理的功能。在后处理中，可以修改标准模型的参数，以使其适合实验数据。另一个重要的新功能是，除了所有背景图（非WW）以外，还可以包括对双共振W对分量过程的完整O（α）校正。包含是通过YFSWW3 MC事件生成器完成的，用于完全排他的差分分布（每个事件的事件）。从技术上讲，它是通过以下方式完成的：YFSWW3与KoralW作为单独的从属进程同时运行，读取KoralW生成的MC事件的动量并将校正权重返回给KoralW。后者使用此权重引入O（α）校正，并完成事件处理（由于总AC权重，强铁化等导致的拒绝）。KoralW和YFSWW3之间的通信是借助UNIX / Linux的FIFO功能完成的。 Linux操作系统。这不需要对FORTRAN源代码进行任何修改。从用户的角度来看，生成的并发MC事件生成器KoralW＆YFSWW3看起来像是具有所有标准功能的常规单个MC事件生成器。

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