Add Herwig7 CH3 tune settings.

Configuration/Generator/python/Herwig7Settings/Herwig7CH3TuneSettings_cfi.py

@@ -0,0 +1,43 @@
+import FWCore.ParameterSet.Config as cms
+
+herwig7CH3SettingsBlock = cms.PSet(
+    herwig7CH3PDF = cms.vstring(
+            'cd /Herwig/Partons',
+            'create ThePEG::LHAPDF PDFSet_nnlo ThePEGLHAPDF.so',
+            'set PDFSet_nnlo:PDFName NNPDF31_nnlo_as_0118.LHgrid',
+            'set PDFSet_nnlo:RemnantHandler HadronRemnants',
+            'set /Herwig/Particles/p+:PDF PDFSet_nnlo',
+            'set /Herwig/Particles/pbar-:PDF PDFSet_nnlo',
+
+            'set /Herwig/Partons/PPExtractor:FirstPDF  PDFSet_nnlo',
+            'set /Herwig/Partons/PPExtractor:SecondPDF PDFSet_nnlo',
+
+            'set /Herwig/Shower/ShowerHandler:PDFA PDFSet_nnlo',
+            'set /Herwig/Shower/ShowerHandler:PDFB PDFSet_nnlo',
+
+            'create ThePEG::LHAPDF PDFSet_lo ThePEGLHAPDF.so',
+            'set PDFSet_lo:PDFName NNPDF31_lo_as_0130.LHgrid',
+            'set PDFSet_lo:RemnantHandler HadronRemnants',
+
+            'set /Herwig/Shower/ShowerHandler:PDFARemnant PDFSet_lo',
+            'set /Herwig/Shower/ShowerHandler:PDFBRemnant PDFSet_lo',
+            'set /Herwig/Partons/MPIExtractor:FirstPDF PDFSet_lo',
+            'set /Herwig/Partons/MPIExtractor:SecondPDF PDFSet_lo',
+
+            'cd /',
+        ),
+    herwig7CH3AlphaS = cms.vstring(
+        'cd /Herwig/Shower',
+        'set AlphaQCD:AlphaMZ 0.118',
+        'cd /'
+        ),
+    herwig7CH3MPISettings = cms.vstring(
+        'read snippets/SoftModel.in',
+        'set /Herwig/Hadronization/ColourReconnector:ReconnectionProbability 0.4712',
+        'set /Herwig/UnderlyingEvent/MPIHandler:pTmin0 3.04',
+        'set /Herwig/UnderlyingEvent/MPIHandler:InvRadius 1.284',
+        'set /Herwig/UnderlyingEvent/MPIHandler:Power 0.1362',
+        'set /Herwig/Partons/RemnantDecayer:ladderPower -0.08',
+        'set /Herwig/Partons/RemnantDecayer:ladderNorm 0.95',
+                                )
+)