Folder PSweightsPythia created

Configuration/Generator/python/PSweightsPythia/PythiaPSweightsSettings_cfi.py

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+import FWCore.ParameterSet.Config as cms
+
+pythia8PSweightsSettingsBlock = cms.PSet(
+    pythia8PSweightsSettings = cms.vstring(
+        'UncertaintyBands:doVariations = on',
+# 3 sets of variations for ISR&FSR up/down
+# Reduced sqrt(2)/(1/sqrt(2)), Default 2/0.5 and Conservative 4/0.25 variations
+        'UncertaintyBands:List = {\
+isrRedHi isr:muRfac=0.707,fsrRedHi fsr:muRfac=0.707,isrRedLo isr:muRfac=1.414,fsrRedLo fsr:muRfac=1.414,\
+isrDefHi isr:muRfac=0.5, fsrDefHi fsr:muRfac=0.5,isrDefLo isr:muRfac=2.0,fsrDefLo fsr:muRfac=2.0,\
+isrConHi isr:muRfac=0.25, fsrConHi fsr:muRfac=0.25,isrConLo isr:muRfac=4.0,fsrConLo fsr:muRfac=4.0}',
+
+        'UncertaintyBands:MPIshowers = on',
+        'UncertaintyBands:overSampleFSR = 10.0',
+        'UncertaintyBands:overSampleISR = 10.0',
+        'UncertaintyBands:FSRpTmin2Fac = 20',
+        'UncertaintyBands:ISRpTmin2Fac = 1'
+        )
+)
+