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Setting Limits on Supersymmetry Using Simplified Models
07:46

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HFOLD - A program package for calculating two-body MSSM Higgs decays at full one-loop level.

W Frisch1, H Eberl, H Hluchá

  • 1Institute of High Energy Physics, Austrian Academy of Sciences, A-1050 Vienna, Austria.

Computer Physics Communications
|October 5, 2011
PubMed
Summary

The HFOLD program calculates MSSM Higgs two-body decay widths and branching ratios at full one-loop level. This Fortran package provides precise theoretical predictions for high-energy collider experiments.

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Area of Science:

  • High Energy Physics
  • Particle Physics Phenomenology
  • Supersymmetry (SUSY) beyond the Standard Model

Background:

  • Precise measurements at future colliders require high-order theoretical calculations.
  • Experimental accuracies necessitate matching theoretical predictions to per-mile levels.
  • The Minimal Supersymmetric Standard Model (MSSM) predicts multiple Higgs bosons.

Purpose of the Study:

  • To develop a computational tool for calculating MSSM Higgs decay widths and branching ratios.
  • To provide full one-loop level precision for theoretical predictions.
  • To support the SUSY Les Houches Accord (SLHA) format for seamless integration with other tools.

Main Methods:

  • Implementation of full one-loop calculations for all MSSM Higgs two-body decays.
  • Renormalization performed in the dimensional reduction (DR) scheme.
  • Adherence to the SUSY Parameter Analysis convention and SLHA input/output format.

Main Results:

  • The HFOLD program package calculates all MSSM Higgs two-body decay widths and branching ratios.
  • The package achieves full one-loop precision.
  • It supports the SLHA format, facilitating use in broader theoretical studies.

Conclusions:

  • HFOLD provides essential theoretical predictions for precision Higgs physics at future colliders.
  • The one-loop calculations are crucial for matching experimental precision.
  • The program's compatibility with SLHA enhances its utility in the SUSY phenomenology community.