BSMPT v2 a tool for the electroweak phase transition and the baryon asymmetry of the universe in extended Higgs Sectors

We present the C++ code BSMPT v2 which is an extension of the previous code BSMPT for the calculation of the strength of the electroweak phase transition in extended Higgs sectors. The new version BSMPT v2 includes the features of BSMPT and extends the already implemented models (the 2-Higgs-Doublet model (2HDM) in its CP-conserving and CP-violating versions and the Next-to-2HDM) by the Complex Singlet Extension of the Standard Model (CxSM). The major upgrade is the implementation of the computation of the baryon asymmetry of the Universe for the CP-violating 2HDM (C2HDM), which is performed in two different approximations. These changes and further smaller modifications are described in this manual. Additionally, a detailed explanation of the procedure for the implementation of new models is given, which has also changed with respect to the previous version.本报告呈现了针对扩展希格斯子域中电弱相变强度计算的 C++ 代码 BSMPT v2，该代码是对先前代码 BSMPT 的扩展。新版本 BSMPT v2 保留了 BSMPT 的特性，并进一步扩展了已实现的模型（包括 CP 保守和 CP 破坏版本的二希格斯双态模型（2HDM）及其次2HDM）通过引入标准模型（SM）的复单态扩展（CxSM）。主要升级是实现了 CP 破坏的二希格斯双态模型（C2HDM）宇宙重子不对称性的计算，该计算采用了两种不同的近似方法。这些变更以及进一步的细微调整在本手册中均有详细描述。此外，还提供了关于新模型实现过程的详细说明，该说明与先前版本相比也发生了变化。