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Fix the HF task to reject cases where a DCA candidate is not found #3333

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Merged
jgrosseo merged 4 commits into from
Apr 12, 2020
Merged

Fix the HF task to reject cases where a DCA candidate is not found #3333

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da113c9
Add explicit propagation to vertex
ginnocen Apr 11, 2020
2542e22
Skip when there is no DCA candidate
ginnocen Apr 12, 2020
1b108af
Pylint fix
ginnocen Apr 12, 2020
9fbe057
Fix Pylint
ginnocen Apr 12, 2020
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14 changes: 9 additions & 5 deletions Analysis/Tasks/vertexerhf.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -43,13 +43,13 @@ struct DecayVertexBuilder2Prong {
OutputObj<TH1F> hchi2dca{TH1F("hchi2dca", "chi2 DCA decay", 1000, 0., 0.0002)};

Produces<aod::SecVtx2Prong> secvtx2prong;
Configurable<std::string> triggersel{"triggersel", "test", "A string configurable"};
//Configurable<std::string> triggersel{"triggersel", "test", "A string configurable"};

void process(aod::Collision const& collision, soa::Join<aod::Tracks,
aod::TracksCov, aod::TracksExtra> const& tracks)
{
LOGP(error, "Trigger selection {}", std::string{triggersel});
LOGF(info, "Tracks for collision: %d", tracks.size());
//LOGP(error, "Trigger selection {}", std::string{triggersel});
LOGF(info, "N. of Tracks for collision: %d", tracks.size());
o2::vertexing::DCAFitterN<2> df;
df.setBz(5.0);
// After finding the vertex, propagate tracks to the DCA. This is default anyway
Expand Down Expand Up @@ -116,7 +116,8 @@ struct DecayVertexBuilder2Prong {
o2::track::TrackParCov trackparvar1(x1_, alpha1_, arraypar1, covpar1);
df.setUseAbsDCA(true);
int nCand = df.process(trackparvar0, trackparvar1);
//FIXME: currently filling the table for all dca candidates.
if (nCand == 0)
continue;
const auto& vtx = df.getPCACandidate();
LOGF(info, "vertex x %f", vtx[0]);
hvtx_x_out->Fill(vtx[0]);
Expand Down Expand Up @@ -151,7 +152,7 @@ struct CandidateBuildingDzero {
void process(aod::SecVtx2Prong const& secVtx2Prongs,
soa::Join<aod::Tracks, aod::TracksCov, aod::TracksExtra> const& tracks)
{
LOGF(info, "NEW EVENT");
LOGF(info, "NEW EVENT CANDIDATE");

o2::vertexing::DCAFitterN<2> df;
df.setBz(5.0);
Expand Down Expand Up @@ -208,6 +209,9 @@ struct CandidateBuildingDzero {
//select the candidate via its index. It is redundant cause the secondary
//vertex recostruction is performed more than once for each dca candidate
int nCand = df.process(trackparvar0, trackparvar1);
if (nCand == 0) {
LOGF(error, " DCAFitter failing in the candidate building: it should not happen");
}
const auto& secvtx = df.getPCACandidate();
float masspion = 0.140;
float masskaon = 0.494;
Expand Down