Producers/src/ProducerD2SS.cc

// $Id: ProducerD2SS.cc,v 1.12 2008/10/24 19:57:47 paus Exp $

#include "MitEdm/Producers/interface/ProducerD2SS.h"
#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/TrackReco/interface/Track.h"
#include "DataFormats/TrackReco/interface/TrackFwd.h"
#include "MitEdm/Producers/interface/HitDropperRecord.h"
#include "MitEdm/Producers/interface/HitDropper.h"
#include "MitEdm/DataFormats/interface/Types.h"
#include "MitEdm/DataFormats/interface/Collections.h"
#include "MitEdm/DataFormats/interface/DecayPart.h"
#include "MitEdm/DataFormats/interface/StablePart.h"
#include "MitEdm/DataFormats/interface/StableData.h"
#include "MitEdm/VertexFitInterface/interface/MvfInterface.h"

using namespace std;
using namespace edm;
using namespace reco;
using namespace mitedm;
using namespace mithep;

//--------------------------------------------------------------------------------------------------
ProducerD2SS::ProducerD2SS(const ParameterSet& cfg) :
  BaseCandProducer(cfg),
  iStables1_(cfg.getUntrackedParameter<string>("iStables1","")),
  iStables2_(cfg.getUntrackedParameter<string>("iStables2",""))
{
  // Constructor
  produces<DecayPartCol>();
}

//--------------------------------------------------------------------------------------------------
ProducerD2SS::~ProducerD2SS()
{
  // Destructor
}

//--------------------------------------------------------------------------------------------------
void ProducerD2SS::produce(Event &evt, const EventSetup &setup)
{
  // Produce the DecayPartCol for a topology: D -> S S

  // First input collection
  Handle<StablePartCol> hStables1;
  if (!GetProduct(iStables1_, hStables1, evt))
    return;
  const StablePartCol *pS1 = hStables1.product();
  // Second input collection
  Handle<StablePartCol> hStables2;
  if (!GetProduct(iStables2_, hStables2, evt))
    return;
  const StablePartCol *pS2 = hStables2.product();

  // Get hit dropper
  ESHandle<HitDropper> hDropper;
  setup.get<HitDropperRecord>().get("HitDropper",hDropper);
  const HitDropper *dropper = hDropper.product();

  // Create the output collection
  auto_ptr<DecayPartCol> pD(new DecayPartCol());

  // Simple double loop
  for (UInt_t i = 0; i<pS1->size(); ++i) {
    const StablePart &s1 =  pS1->at(i);

    UInt_t j;
    if (iStables1_ == iStables2_)
      j = i+1;
    else
      j = 0;

    for (; j<pS2->size(); ++j) {
      const StablePart &s2 = pS2->at(j);

      // Vertex fit now (temporary screwing around)
      MultiVertexFitterD fit;
      fit.init(3.8); // Reset to the MC magnetic field of 4 Tesla
      MvfInterface fitInt(&fit);
      fitInt.addTrack(s1.track(),1,s1.mass(),MultiVertexFitterD::VERTEX_1);
      fitInt.addTrack(s2.track(),2,s2.mass(),MultiVertexFitterD::VERTEX_1);
      if (fit.fit()) {
        DecayPart *d = new DecayPart(oPid_,DecayPart::Fast);

        // Update temporarily some of the quantities (prob, chi2, nDoF, mass, lxy, pt, fourMomentum)
        d->setProb(fit.prob());
        d->setChi2(fit.chisq());
        d->setNdof(fit.ndof());

        FourVector p4Fitted(0.,0.,0.,0.);
        p4Fitted += fit.getTrackP4(1);
        p4Fitted += fit.getTrackP4(2);
        d->setFourMomentum(p4Fitted);
        d->setPosition    (fit.getVertex     (MultiVertexFitterD::VERTEX_1));
        d->setError       (fit.getErrorMatrix(MultiVertexFitterD::VERTEX_1));
        float mass, massErr;
        const int trksIds[2] = { 1, 2 };
        mass = fit.getMass(2,trksIds,massErr);

        ThreeVector p3Fitted(p4Fitted.px(),p4Fitted.py(),p4Fitted.pz());

        // Get decay length in xy plane
        float dl, dlErr;
        dl = fit.getDecayLength  (MultiVertexFitterD::PRIMARY_VERTEX,MultiVertexFitterD::VERTEX_1,
                                  p3Fitted,dlErr);

        // Get Z decay length
        float dlz, dlzErr;
        dlz = fit.getZDecayLength(MultiVertexFitterD::PRIMARY_VERTEX,MultiVertexFitterD::VERTEX_1,
                                  p3Fitted, dlzErr);

        // Get impact parameter
        float dxy, dxyErr;
        dxy = fit.getImpactPar   (MultiVertexFitterD::PRIMARY_VERTEX,MultiVertexFitterD::VERTEX_1,
                                  p3Fitted, dxyErr);

        BasePartPtr ptr1(hStables1,i);
        BasePartPtr ptr2(hStables2,j);

        StableData  c1(fit.getTrackP4(1).px(),fit.getTrackP4(1).py(), fit.getTrackP4(1).pz(), ptr1);
        StableData  c2(fit.getTrackP4(2).px(),fit.getTrackP4(2).py(), fit.getTrackP4(2).pz(), ptr2);

        const ThreeVector vtxPos = fit.getVertex(MultiVertexFitterD::VERTEX_1);
        const ThreeVector trkMom1(fit.getTrackP4(1).px(),fit.getTrackP4(1).py(),
                                  fit.getTrackP4(1).pz());
        const ThreeVector trkMom2(fit.getTrackP4(2).px(),fit.getTrackP4(2).py(),
                                  fit.getTrackP4(2).pz());

        // Build corrected HitPattern for StableData, removing hits before the fit vertex
        reco::HitPattern hits1 = dropper->CorrectedHits(s1.track(), vtxPos, trkMom1, dlErr, dlzErr);
        reco::HitPattern hits2 = dropper->CorrectedHits(s2.track(), vtxPos, trkMom2, dlErr, dlzErr);

        c1.SetHits(hits1);
        c2.SetHits(hits2);

        d->addStableChild    (c1);
        d->addStableChild    (c2);
        d->setFittedMass     (mass);
        d->setFittedMassError(massErr);
        d->setLxy            (dl);
        d->setLxyError       (dlErr);
        d->setLxyToPv        (dl);
        d->setLxyToPvError   (dlErr);
        d->setLz             (dlz);
        d->setLzError        (dlzErr);
        d->setLzToPv         (dlz);
        d->setLzToPvError    (dlzErr);
        d->setDxy            (dxy);
        d->setDxyError       (dxyErr);
        d->setDxyToPv        (dxy);
        d->setDxyToPvError   (dxyErr);

        // Put the result into our collection
        pD->push_back(*d);
        delete d;
      }
    }
  }

  // Write the collection even if it is empty
  if (0)
    cout << " ProducerD2SS::produce - " << pD->size() << " entries collection created -"
         << " (Pid: " << oPid_ << ")\n";
  evt.put(pD);
}

// Define this as a plug-in
DEFINE_FWK_MODULE(ProducerD2SS);
Revision:	1.13
Committed:	Thu Nov 13 17:08:31 2008 UTC (16 years, 5 months ago) by paus
Content type:	text/plain
Branch:	MAIN
CVS Tags:	Mit_011, Mit_010a, Mit_010, Mit_009c, Mit_009b, Mit_009a, Mit_009, Mit_008, Mit_008pre2, Mit_008pre1, Mit_006b, Mit_006a, Mit_006
Changes since 1.12:	+66 -69 lines
Log Message:	Optimized MultiVertexFitter'D'.
#	User	Rev	Content
1	paus	1.13	// $Id: ProducerD2SS.cc,v 1.12 2008/10/24 19:57:47 paus Exp $
2	loizides	1.4
3	loizides	1.7	#include "MitEdm/Producers/interface/ProducerD2SS.h"
4	bendavid	1.1	#include "DataFormats/Common/interface/Handle.h"
5			#include "DataFormats/TrackReco/interface/Track.h"
6			#include "DataFormats/TrackReco/interface/TrackFwd.h"
7	bendavid	1.11	#include "MitEdm/Producers/interface/HitDropperRecord.h"
8			#include "MitEdm/Producers/interface/HitDropper.h"
9	bendavid	1.1	#include "MitEdm/DataFormats/interface/Types.h"
10	loizides	1.7	#include "MitEdm/DataFormats/interface/Collections.h"
11	bendavid	1.1	#include "MitEdm/DataFormats/interface/DecayPart.h"
12			#include "MitEdm/DataFormats/interface/StablePart.h"
13	bendavid	1.8	#include "MitEdm/DataFormats/interface/StableData.h"
14	bendavid	1.1	#include "MitEdm/VertexFitInterface/interface/MvfInterface.h"
15
16			using namespace std;
17			using namespace edm;
18			using namespace reco;
19			using namespace mitedm;
20	loizides	1.4	using namespace mithep;
21	bendavid	1.1
22			//--------------------------------------------------------------------------------------------------
23			ProducerD2SS::ProducerD2SS(const ParameterSet& cfg) :
24	loizides	1.7	BaseCandProducer(cfg),
25			iStables1_(cfg.getUntrackedParameter<string>("iStables1","")),
26			iStables2_(cfg.getUntrackedParameter<string>("iStables2",""))
27	bendavid	1.1	{
28	paus	1.12	// Constructor
29	bendavid	1.1	produces<DecayPartCol>();
30			}
31
32			//--------------------------------------------------------------------------------------------------
33			ProducerD2SS::~ProducerD2SS()
34			{
35	paus	1.12	// Destructor
36	bendavid	1.1	}
37
38			//--------------------------------------------------------------------------------------------------
39			void ProducerD2SS::produce(Event &evt, const EventSetup &setup)
40			{
41	paus	1.12	// Produce the DecayPartCol for a topology: D -> S S
42	loizides	1.7
43	bendavid	1.1	// First input collection
44			Handle<StablePartCol> hStables1;
45			if (!GetProduct(iStables1_, hStables1, evt))
46	paus	1.13	return;
47	bendavid	1.1	const StablePartCol *pS1 = hStables1.product();
48			// Second input collection
49			Handle<StablePartCol> hStables2;
50			if (!GetProduct(iStables2_, hStables2, evt))
51			return;
52			const StablePartCol *pS2 = hStables2.product();
53
54	paus	1.12	// Get hit dropper
55	bendavid	1.11	ESHandle<HitDropper> hDropper;
56			setup.get<HitDropperRecord>().get("HitDropper",hDropper);
57			const HitDropper *dropper = hDropper.product();
58	paus	1.13
59	bendavid	1.1	// Create the output collection
60			auto_ptr<DecayPartCol> pD(new DecayPartCol());
61
62			// Simple double loop
63			for (UInt_t i = 0; i<pS1->size(); ++i) {
64			const StablePart &s1 = pS1->at(i);
65	paus	1.13
66	bendavid	1.1	UInt_t j;
67			if (iStables1_ == iStables2_)
68	paus	1.13	j = i+1;
69	bendavid	1.1	else
70			j = 0;
71	paus	1.13
72	bendavid	1.1	for (; j<pS2->size(); ++j) {
73			const StablePart &s2 = pS2->at(j);
74
75			// Vertex fit now (temporary screwing around)
76	paus	1.13	MultiVertexFitterD fit;
77	loizides	1.7	fit.init(3.8); // Reset to the MC magnetic field of 4 Tesla
78	bendavid	1.1	MvfInterface fitInt(&fit);
79	paus	1.13	fitInt.addTrack(s1.track(),1,s1.mass(),MultiVertexFitterD::VERTEX_1);
80			fitInt.addTrack(s2.track(),2,s2.mass(),MultiVertexFitterD::VERTEX_1);
81	bendavid	1.1	if (fit.fit()) {
82	paus	1.13	DecayPart *d = new DecayPart(oPid_,DecayPart::Fast);
83
84			// Update temporarily some of the quantities (prob, chi2, nDoF, mass, lxy, pt, fourMomentum)
85			d->setProb(fit.prob());
86			d->setChi2(fit.chisq());
87			d->setNdof(fit.ndof());
88
89			FourVector p4Fitted(0.,0.,0.,0.);
90			p4Fitted += fit.getTrackP4(1);
91			p4Fitted += fit.getTrackP4(2);
92			d->setFourMomentum(p4Fitted);
93			d->setPosition (fit.getVertex (MultiVertexFitterD::VERTEX_1));
94			d->setError (fit.getErrorMatrix(MultiVertexFitterD::VERTEX_1));
95			float mass, massErr;
96			const int trksIds[2] = { 1, 2 };
97			mass = fit.getMass(2,trksIds,massErr);
98
99			ThreeVector p3Fitted(p4Fitted.px(),p4Fitted.py(),p4Fitted.pz());
100	bendavid	1.8
101	paus	1.12	// Get decay length in xy plane
102	bendavid	1.8	float dl, dlErr;
103	paus	1.13	dl = fit.getDecayLength (MultiVertexFitterD::PRIMARY_VERTEX,MultiVertexFitterD::VERTEX_1,
104			p3Fitted,dlErr);
105
106			// Get Z decay length
107	bendavid	1.8	float dlz, dlzErr;
108	paus	1.13	dlz = fit.getZDecayLength(MultiVertexFitterD::PRIMARY_VERTEX,MultiVertexFitterD::VERTEX_1,
109			p3Fitted, dlzErr);
110
111			// Get impact parameter
112	bendavid	1.8	float dxy, dxyErr;
113	paus	1.13	dxy = fit.getImpactPar (MultiVertexFitterD::PRIMARY_VERTEX,MultiVertexFitterD::VERTEX_1,
114			p3Fitted, dxyErr);
115	loizides	1.4
116	bendavid	1.11	BasePartPtr ptr1(hStables1,i);
117	paus	1.13	BasePartPtr ptr2(hStables2,j);
118
119			StableData c1(fit.getTrackP4(1).px(),fit.getTrackP4(1).py(), fit.getTrackP4(1).pz(), ptr1);
120			StableData c2(fit.getTrackP4(2).px(),fit.getTrackP4(2).py(), fit.getTrackP4(2).pz(), ptr2);
121
122			const ThreeVector vtxPos = fit.getVertex(MultiVertexFitterD::VERTEX_1);
123	paus	1.12	const ThreeVector trkMom1(fit.getTrackP4(1).px(),fit.getTrackP4(1).py(),
124	paus	1.13	fit.getTrackP4(1).pz());
125	paus	1.12	const ThreeVector trkMom2(fit.getTrackP4(2).px(),fit.getTrackP4(2).py(),
126	paus	1.13	fit.getTrackP4(2).pz());
127
128	paus	1.12	// Build corrected HitPattern for StableData, removing hits before the fit vertex
129	bendavid	1.11	reco::HitPattern hits1 = dropper->CorrectedHits(s1.track(), vtxPos, trkMom1, dlErr, dlzErr);
130			reco::HitPattern hits2 = dropper->CorrectedHits(s2.track(), vtxPos, trkMom2, dlErr, dlzErr);
131	paus	1.13
132	bendavid	1.11	c1.SetHits(hits1);
133			c2.SetHits(hits2);
134	paus	1.13
135			d->addStableChild (c1);
136			d->addStableChild (c2);
137	bendavid	1.8	d->setFittedMass (mass);
138			d->setFittedMassError(massErr);
139	paus	1.13	d->setLxy (dl);
140			d->setLxyError (dlErr);
141			d->setLxyToPv (dl);
142			d->setLxyToPvError (dlErr);
143			d->setLz (dlz);
144			d->setLzError (dlzErr);
145			d->setLzToPv (dlz);
146			d->setLzToPvError (dlzErr);
147			d->setDxy (dxy);
148			d->setDxyError (dxyErr);
149			d->setDxyToPv (dxy);
150			d->setDxyToPvError (dxyErr);
151
152			// Put the result into our collection
153			pD->push_back(*d);
154	bendavid	1.1	delete d;
155			}
156			}
157			}
158
159			// Write the collection even if it is empty
160	paus	1.13	if (0)
161	loizides	1.10	cout << " ProducerD2SS::produce - " << pD->size() << " entries collection created -"
162			<< " (Pid: " << oPid_ << ")\n";
163	bendavid	1.1	evt.put(pD);
164			}
165
166	paus	1.12	// Define this as a plug-in
167	bendavid	1.1	DEFINE_FWK_MODULE(ProducerD2SS);