TL;DR
The paper introduces 2HDMC, a comprehensive computational tool for analyzing the parameter space, decays, and constraints of the CP-conserving two-Higgs-doublet model, aiding theoretical and phenomenological studies.
Contribution
It provides a versatile, publicly available code that simplifies calculations and explores the 2HDM parameter space with decay, constraint, and parametrization features.
Findings
Enables calculation of Higgs decay modes and observables.
Supports analysis of theoretical constraints like positivity and unitarity.
Facilitates exploration of different 2HDM parametrizations.
Abstract
This manual describes the public code 2HDMC which can be used to perform calculations in a general, CP-conserving, two-Higgs-doublet model (2HDM). The program features simple conversion between different parametrizations of the 2HDM potential, a flexible Yukawa sector specification with choices of different Z_2-symmetries or more general couplings, a tree-level decay library including all two-body - and some three-body - decay modes for the Higgs bosons, and the possibility to calculate observables of interest for constraining the 2HDM parameter space, as well as theoretical constraints from positivity and unitarity. The latest version of the 2HDMC code and full documentation is available from: http://www.isv.uu.se/thep/MC/2HDMC
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