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Seeding of L2 muons: propagate L1 cands to ME2 if propagation to MB2 fails #14505

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merged 2 commits into from May 18, 2016
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Seeding of L2 muons: propagate L1 cands to ME2 if propagation to MB2 fails #14505

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2d74584
add tentative propagation to ME2 if MB2 fails
sarafiorendi May 14, 2016
6565a2d
add tentative propagation to ME2 if MB2 fails + revert spaces
sarafiorendi May 14, 2016
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14 changes: 14 additions & 0 deletions RecoMuon/L2MuonSeedGenerator/src/L2MuonSeedGeneratorFromL1T.cc
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Expand Up @@ -217,6 +217,11 @@ void L2MuonSeedGeneratorFromL1T::produce(edm::Event& iEvent, const edm::EventSet
if( pt < 1.0) pt = 1.0;
}

// Fallback solution using ME2
DetId fallback_id;
theta < Geom::pi()/2. ? fallback_id = CSCDetId(1,2,0,0,0) : fallback_id = CSCDetId(2,2,0,0,0);
const DetLayer* ME2DetLayer = theService->detLayerGeometry()->idToLayer(fallback_id);

vec.setMag(radius);

GlobalPoint pos(vec.x(),vec.y(),vec.z());
Expand Down Expand Up @@ -292,6 +297,15 @@ void L2MuonSeedGeneratorFromL1T::produce(edm::Event& iEvent, const edm::EventSet
detsWithStates = detLayer->compatibleDets(tsos,
*theService->propagator(thePropagatorName),
*theEstimator);

if (detsWithStates.size() == 0 && barrel ) {
// try again to propagate but using ME2 as reference
tsos = theService->propagator(thePropagatorName)->propagate(state, ME2DetLayer->surface());
detsWithStates = ME2DetLayer->compatibleDets(tsos,
*theService->propagator(thePropagatorName),
*theEstimator);
}

if (detsWithStates.size()){

TrajectoryStateOnSurface newTSOS = detsWithStates.front().second;
Expand Down