3 RungeKuttaTrackerPropagatorOpposite = cms.ESProducer(
"PropagatorWithMaterialESProducer",
4 MaxDPhi = cms.double(1.6),
5 ComponentName = cms.string(
'RungeKuttaTrackerPropagatorOpposite'),
6 Mass = cms.double(0.105),
7 PropagationDirection = cms.string(
'oppositeToMomentum'),
8 useRungeKutta = cms.bool(
True),
12 ptMin = cms.double(-1.)