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import FWCore.ParameterSet.Config as cms
# Matrix element correction options
# By default matrix element corrections are switched off
# Note: In Herwig++ 2.7.1 matrix element corrections are switched on by default, however this is not recommend if LHE files are showered
# Requiring the hwpp_MECorr_Common block results that the user must make a choice
# Since the single blocks will be alphabetically ordered, we can override the common block and still require that it exists.
herwigppMECorrectionsSettingsBlock = cms.PSet(
# Deactive ME corrections at all
# New standard behaviour
hwpp_MECorr_Common = cms.vstring(
'set /Herwig/Shower/Evolver:MECorrMode No', # Deactive ME corrections at all
),
# Wrapper to allow more homogenous syntax
hwpp_MECorr_Off = cms.vstring(
'+hwpp_MECorr_Common', # Deactive ME corrections at all
),
# Activate ME corrections for the hard process
hwpp_MECorr_HardOn = cms.vstring(
'+hwpp_MECorr_Common',
'set /Herwig/Shower/Evolver:MECorrMode Hard', # Activate ME corrections for the hard process
),
# Activate ME corrections for the soft process
hwpp_MECorr_SoftOn = cms.vstring(
'+hwpp_MECorr_Common',
'set /Herwig/Shower/Evolver:MECorrMode Soft', # Activate ME corrections for the soft process
),
# Activate ME corrections for the soft and hard process
hwpp_MECorr_On = cms.vstring(
'+hwpp_MECorr_Common',
'set /Herwig/Shower/Evolver:MECorrMode Yes', # Activate ME corrections for the soft and hard process
),
)
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