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