25 May 2015
Changes in eHDECAY
In ehdecay.in the bottom quark mass has been set to 4.49 GeV, as used
by the LHCXSWG. Also VCB and VUS have been set to the default values used
in the original hdecay program. The ehdecay.in file has been
exchanged and also the one within ehdecay.tar.gz. The files br.eff1 and
br.eff2 corresponding to the new ehdecay.in have been uploaded. (25
The parameter cTbar has been included both in the input file and the
ehdecay.f code. It appears in the SILH parametrization in the Higgs
decay into ZZ. (12 March 2014)
For the SILH option the variable 'ratcoup', which enters
QCD corrections to Higgs decays into quarks, has been linearised for the
Higgs decays into cc, ss and bb.
(30 Jan 2014)
The decay widths and branching ratios calculated within
can now also be evaluated for large deviations from the SM couplings
(i.e. large values of xi). Note that in MCHM4/5 the electroweak
corrections are not included any more in the decay widths.
In case the deviations from the SM couplings are small, we recommend to
the SILH parametrisation (after translating the MCHM4/5 couplings to the
SILH parametrisation). In this case the elw corrections are included.
Thanks to Marco Battaglia for pointing out to us the problem in the
calculation of the decay widths within the MCHM4/5 for large values of xi.
(18 June 2013)
Last modified: Wed March 12 12:48:25 MET 2014