HDECAY: a program for Higgs boson decays in the Standard Model and its supersymmetric extension

Abstract

We describe the Fortran code HDECAY † , which calculates the decay widths and the branching ratios of the Standard Model Higgs boson, and of the neutral and charged Higgs particles of the Minimal Supersymmetric extension of the Standard Model. The program is self-contained (with all subroutines included), easy to run, fast and calculates the decay widths and branching ratios according to the current theoretical knowledge. † The program may be obtained from

Observation and measurement of Higgs boson decays toWW*with the ATLAS detector

“…Resummation has been performed to NNLL in QCD for the ggF process. For the decay, the calculation of the branching fraction is computed using the H → WW Ã and H → ZZ Ã partial widths from PROPHECY4f [65] and the width of all other decays from HDECAY [66]. …”

Enhanced di-photon Higgs signal in the Next-to-Minimal Supersymmetric Standard Model

“…(Tevatron constraints are not relevant for the present region in parameter space.) The code also allows to compute the various Higgs decay branching ratios through a suitable generalization of HDECAY [16] to the NMSSM.…”

Search for the lepton flavor violating decayA0/H0→τ±Assamagan1, Deandrea2, Delsart3 2003Phys. Rev. D723780View full textAdd to dashboardCite

“…We restrict the present work to the low mass region, 120 < m A < 160 GeV, primarily because the (22) -becomes negligible [37] as the SM mode H 0 SM → W + W − opens up around 160 GeV as shown in Figure 5 where we assume κ τ µ = 1. We take as a reference the parameters of set 2 in Table I for comparison with the MSSM case without loss of generality.…”