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Marta Razza
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Add new trigger for non-prompt antideuterons from beauty
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‎EventFiltering/CMakeLists.txt‎

Lines changed: 6 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -107,7 +107,12 @@ o2physics_add_dpl_workflow(lf-f1proton-filter
107107
PUBLIC_LINK_LIBRARIES O2Physics::AnalysisCore KFParticle::KFParticle O2::DetectorsBase
108108
COMPONENT_NAME Analysis)
109109

110-
o2physics_add_dpl_workflow(lf-doublephi-filter
110+
o2physics_add_dpl_workflow(lf-doublephi-filter
111111
SOURCES PWGLF/filterdoublephi.cxx
112112
PUBLIC_LINK_LIBRARIES O2Physics::AnalysisCore O2::DetectorsBase
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COMPONENT_NAME Analysis)
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o2physics_add_dpl_workflow(h2-from-beauty-filter
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SOURCES PWGHF/H2fromLbFilter.cxx
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PUBLIC_LINK_LIBRARIES O2Physics::AnalysisCore O2::DetectorsBase
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COMPONENT_NAME Analysis)

‎EventFiltering/PWGHF/H2fromLbFilter.cxx‎

Lines changed: 246 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,246 @@
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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
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// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
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// All rights not expressly granted are reserved.
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//
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// This software is distributed under the terms of the GNU General Public
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// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
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//
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// In applying this license CERN does not waive the privileges and immunities
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// granted to it by virtue of its status as an Intergovernmental Organization
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// or submit itself to any jurisdiction.
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//
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/// \brief A filter task for non prompt deuterons
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/// \author Marta Razza marta.razza@cern.ch
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/// \author Francesca Ercolessi francesca.ercolessi@cern.ch
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/// \since Dec 17, 2025
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#include "../filterTables.h"
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#include "PWGLF/DataModel/LFParticleIdentification.h"
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#include "Common/Core/RecoDecay.h"
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#include "Common/Core/TrackSelection.h"
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#include "Common/Core/trackUtilities.h"
24+
#include "Common/DataModel/Centrality.h"
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#include "Common/DataModel/CollisionAssociationTables.h"
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#include "Common/DataModel/EventSelection.h"
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#include "Common/DataModel/Multiplicity.h"
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#include "Common/DataModel/PIDResponseTOF.h"
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#include "Common/DataModel/TrackSelectionTables.h"
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#include "CCDB/BasicCCDBManager.h"
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#include "CommonConstants/PhysicsConstants.h"
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#include "DCAFitter/DCAFitterN.h"
34+
#include "DataFormatsParameters/GRPMagField.h"
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#include "DataFormatsParameters/GRPObject.h"
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#include "DetectorsBase/Propagator.h"
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#include "Framework/ASoAHelpers.h"
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#include "Framework/AnalysisDataModel.h"
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#include "Framework/AnalysisTask.h"
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#include "Framework/runDataProcessing.h"
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#include "ReconstructionDataFormats/Track.h"
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#include "ReconstructionDataFormats/TrackParametrization.h"
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#include "TVector3.h"
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#include <cmath>
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struct H2fromLbFilter {
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// Recall the output table
51+
o2::framework::Produces<o2::aod::H2fromLbFilters> table;
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o2::framework::Configurable<int> nBinsPt{"nBinsPt", 100, "N bins in pT histo"};
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o2::base::Propagator::MatCorrType noMatCorr = o2::base::Propagator::MatCorrType::USEMatCorrNONE;
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// Define a histograms and registries
58+
o2::framework::HistogramRegistry QAHistos{"QAHistos", {}, o2::framework::OutputObjHandlingPolicy::AnalysisObject, false, true};
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o2::framework::OutputObj<TH1D> hProcessedEvents{TH1D("hProcessedEvents", "Event filtered;; Number of events", 6, 0., 6.)};
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o2::framework::ConfigurableAxis pTAxis{"pTAxis", {200, -10.f, 10.f}, "p_{T} GeV/c"};
62+
o2::framework::ConfigurableAxis nSigmaAxis{"nSigmaAxis", {200, -10.f, 10.f}, "p_{T} GeV/c"};
63+
o2::framework::ConfigurableAxis DCAxyAxis{"DCAxyAxis", {1000, -0.2f, 0.2f}, "DCA xy (cm)"};
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o2::framework::ConfigurableAxis DCAzAxis{"DCAzAxis", {1000, -0.2f, 0.2f}, "DCA z (cm)"};
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66+
o2::framework::Configurable<float> cutzvertex{"cutzvertex", 20.0f, "Accepted z-vertex range"}; // 20 cm
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o2::framework::Configurable<bool> isTVX{"isTVX", true, "isTVX event selection"};
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o2::framework::Configurable<bool> isNoTimeFrameBorder{"isNoTimeFrameBorder", true, "isNoTimeFrameBorder event selection"};
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o2::framework::Configurable<bool> isNoITSROFrameBorder{"isNoITSROFrameBorder", true, "isNoITSROFrameBorder event selection"};
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o2::framework::Configurable<float> cfgTPCNsigma{"cfgTPCNsigma", 4.0f, "TPC n sigma for deuteron PID"};
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o2::framework::Configurable<float> cfgTOFNsigma{"cfgTOFNsigma", 4.0f, "TOF n sigma for deuteron PID"};
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o2::framework::Configurable<float> cfgEta{"cfgEta", 0.8f, "Track eta selection"};
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o2::framework::Configurable<int> cfgTPCNclsFound{"cfgTPCNclsFound", 100, "Minimum TPC clusters found"};
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o2::framework::Configurable<float> cfgTPCChi2Ncl{"cfgTPCChi2Ncl", 4.0f, "Maximum TPC chi2 per N clusters"};
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o2::framework::Configurable<float> cfgITSChi2Ncl{"cfgITSChi2Ncl", 36.0f, "Maximum ITS chi2 per N clusters"};
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o2::framework::Configurable<int> cfgITScls{"cfgITScls", 2, "Minimum ITS clusters"};
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o2::framework::Configurable<float> cfgMaxPt{"cfgMaxPt", 5.0f, "Maximum pT cut"};
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o2::framework::Configurable<float> cfgMinPt{"cfgMinPt", 1.0f, "Maximum pT cut"};
79+
o2::framework::Configurable<float> cfgDCAcut{"cfgDCAcut", 0.003f, "DCA cut for non prompt deuteron"};
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81+
o2::framework::Service<o2::ccdb::BasicCCDBManager> ccdb;
82+
83+
void init(o2::framework::InitContext&)
84+
{
85+
ccdb->setURL("http://alice-ccdb.cern.ch"); // Set CCDB URL to get magnetic field
86+
ccdb->setCaching(true);
87+
ccdb->setLocalObjectValidityChecking();
88+
ccdb->setCreatedNotAfter(std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count());
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90+
o2::framework::AxisSpec ptAxis = {100, 0.0f, 10.0f, "#it{p}_{T} (GeV/#it{c})"};
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// general QA histograms
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QAHistos.add("hVtxZ", "Z-Vertex distribution after selection;Z (cm)", o2::framework::HistType::kTH1F, {{100, -50, 50}});
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QAHistos.add("hDCAxyVsPt", "DCAxy #bar{d} vs p_{T}", {o2::framework::HistType::kTH2D, {pTAxis, DCAxyAxis}});
95+
QAHistos.add("hDCAzVsPt", "DCAz #bar{d} vs p_{T}", {o2::framework::HistType::kTH2D, {pTAxis, DCAzAxis}});
96+
QAHistos.add("hnSigmaTPCVsPt", "n#sigma TPC vs p_{T} for #bar{d} hypothesis; p_{T} (GeV/c); n#sigma TPC", {o2::framework::HistType::kTH2D, {pTAxis, nSigmaAxis}});
97+
QAHistos.add("hnSigmaTOFVsPt", "n#sigma TOF vs p_{T} for #bar{d} hypothesis; p_{T} (GeV/c); n#sigma TOF", {o2::framework::HistType::kTH2D, {pTAxis, nSigmaAxis}});
98+
QAHistos.add("ptAntiDeuteron", "ptAntiDeuteron", {o2::framework::HistType::kTH1F, {ptAxis}});
99+
QAHistos.add("etaAntideuteron", "etaAntideuteron", {o2::framework::HistType::kTH1F, {{100, -1.0f, 1.0f, "eta #bar{d}"}}});
100+
QAHistos.add("hDCAxyVsPt-pre_selection", "DCAxy #bar{d} vs p_{T}", {o2::framework::HistType::kTH2D, {pTAxis, DCAxyAxis}});
101+
QAHistos.add("hDCAzVsPt-pre-selection", "DCAz #bar{d} vs p_{T}", {o2::framework::HistType::kTH2D, {pTAxis, DCAzAxis}});
102+
103+
// processed events
104+
hProcessedEvents->GetXaxis()->SetBinLabel(1, "Events processed");
105+
hProcessedEvents->GetXaxis()->SetBinLabel(2, "TVX");
106+
hProcessedEvents->GetXaxis()->SetBinLabel(3, "TF border");
107+
hProcessedEvents->GetXaxis()->SetBinLabel(4, "ITS-RO border");
108+
hProcessedEvents->GetXaxis()->SetBinLabel(5, "z-vertex");
109+
hProcessedEvents->GetXaxis()->SetBinLabel(6, o2::aod::filtering::H2fromLb::columnLabel());
110+
}
111+
112+
// Tables
113+
using CollisionCandidates = o2::soa::Join<o2::aod::Collisions, o2::aod::EvSels>;
114+
using TrackCandidates = o2::soa::Join<o2::aod::Tracks, o2::aod::TracksCov, o2::aod::TracksExtra, o2::aod::TracksDCA, o2::aod::TrackSelection, o2::aod::pidTPCFullDe, o2::aod::pidTOFFullDe>;
115+
116+
// Single-Track Selection
117+
template <typename T1>
118+
bool passedSingleTrackSelection(const T1& track)
119+
{
120+
// Single-Track Selections
121+
if (std::abs(track.eta()) > cfgEta)
122+
return false;
123+
if (!track.hasITS())
124+
return false;
125+
if (!track.hasTPC())
126+
return false;
127+
if (!track.hasTOF())
128+
return false;
129+
if (track.tpcNClsFound() < cfgTPCNclsFound)
130+
return false;
131+
if (track.tpcChi2NCl() > cfgTPCChi2Ncl)
132+
return false;
133+
if (track.itsChi2NCl() > cfgITSChi2Ncl)
134+
return false;
135+
if (track.itsNCls() < cfgITScls)
136+
return false;
137+
if (track.pt() > cfgMaxPt)
138+
return false;
139+
if (track.pt() < cfgMinPt)
140+
return false;
141+
if (track.sign() > 0)
142+
return false;
143+
144+
return true;
145+
}
146+
147+
void fillTriggerTable(bool keepEvent[])
148+
{
149+
table(keepEvent[0]);
150+
}
151+
152+
o2::framework::Preslice<o2::aod::TrackAssoc> trackIndicesPerCollision = o2::aod::track_association::collisionId;
153+
int mCurrentRun = -1;
154+
155+
void process(CollisionCandidates const& collisions,
156+
o2::aod::TrackAssoc const& trackIndices,
157+
TrackCandidates const& tracks,
158+
o2::aod::BCsWithTimestamps const&)
159+
{
160+
for (const auto& collision : collisions) // start loop over collisions
161+
{
162+
if (mCurrentRun != collision.bc_as<o2::aod::BCsWithTimestamps>().runNumber()) { // If the run is new then we need to initialize the propagator field
163+
o2::parameters::GRPMagField* grpo = ccdb->getForTimeStamp<o2::parameters::GRPMagField>("GLO/Config/GRPMagField", collision.bc_as<o2::aod::BCsWithTimestamps>().timestamp());
164+
o2::base::Propagator::initFieldFromGRP(grpo);
165+
mCurrentRun = collision.bc_as<o2::aod::BCsWithTimestamps>().runNumber();
166+
}
167+
168+
// Is event good? keepEvent[0] = non promp deuteron
169+
bool keepEvent[1]{}; // explicitly zero-initialised
170+
hProcessedEvents->Fill(0.5);
171+
// Event selection cuts
172+
if (isTVX && !collision.selection_bit(o2::aod::evsel::kIsTriggerTVX)) {
173+
fillTriggerTable(keepEvent);
174+
continue;
175+
}
176+
hProcessedEvents->Fill(1.5);
177+
if (isNoTimeFrameBorder && !collision.selection_bit(o2::aod::evsel::kNoTimeFrameBorder)) {
178+
fillTriggerTable(keepEvent);
179+
continue;
180+
}
181+
hProcessedEvents->Fill(2.5);
182+
if (isNoITSROFrameBorder && !collision.selection_bit(o2::aod::evsel::kNoITSROFrameBorder)) {
183+
fillTriggerTable(keepEvent);
184+
continue;
185+
}
186+
hProcessedEvents->Fill(3.5);
187+
if (std::abs(collision.posZ()) > cutzvertex) {
188+
fillTriggerTable(keepEvent);
189+
continue;
190+
}
191+
hProcessedEvents->Fill(4.5);
192+
QAHistos.fill(HIST("hVtxZ"), collision.posZ());
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194+
// Loop over tracks
195+
const auto& trackIdsThisCollision = trackIndices.sliceBy(trackIndicesPerCollision, collision.globalIndex());
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for (const auto& trackId : trackIdsThisCollision) { // start loop over tracks
198+
199+
const auto& track = tracks.rawIteratorAt(trackId.trackId());
200+
201+
std::array<float, 2> dca{track.dcaXY(), track.dcaZ()};
202+
std::array<float, 3> pVec = track.pVector();
203+
204+
if (track.collisionId() != collision.globalIndex()) {
205+
auto trackPar = getTrackParCov(track);
206+
o2::base::Propagator::Instance()->propagateToDCABxByBz({collision.posX(), collision.posY(), collision.posZ()}, trackPar, 2.f, noMatCorr, &dca);
207+
getPxPyPz(trackPar, pVec);
208+
}
209+
210+
if (!passedSingleTrackSelection(track)) {
211+
continue;
212+
}
213+
214+
const bool isTOFDe = std::abs(track.tofNSigmaDe()) < cfgTOFNsigma;
215+
const bool isTPCDe = std::abs(track.tpcNSigmaDe()) < cfgTPCNsigma;
216+
217+
if (isTPCDe && isTOFDe) {
218+
219+
QAHistos.fill(HIST("hDCAxyVsPt-pre_selection"), track.pt(), dca[0]);
220+
QAHistos.fill(HIST("hDCAzVsPt-pre-selection"), track.pt(), dca[1]);
221+
if (std::abs(dca[0]) < cfgDCAcut) {
222+
continue;
223+
}
224+
keepEvent[0] = true;
225+
QAHistos.fill(HIST("ptAntiDeuteron"), track.pt());
226+
QAHistos.fill(HIST("etaAntideuteron"), track.eta());
227+
QAHistos.fill(HIST("hDCAxyVsPt"), track.pt(), dca[0]);
228+
QAHistos.fill(HIST("hDCAzVsPt"), track.pt(), dca[1]);
229+
QAHistos.fill(HIST("hnSigmaTPCVsPt"), track.pt(), track.tpcNSigmaDe());
230+
QAHistos.fill(HIST("hnSigmaTOFVsPt"), track.pt(), track.tofNSigmaDe());
231+
}
232+
233+
} // end track loop
234+
if (keepEvent[0]) {
235+
hProcessedEvents->Fill(5.5);
236+
}
237+
238+
fillTriggerTable(keepEvent);
239+
}
240+
}
241+
};
242+
243+
o2::framework::WorkflowSpec defineDataProcessing(o2::framework::ConfigContext const& cfgc)
244+
{
245+
return o2::framework::WorkflowSpec{o2::framework::adaptAnalysisTask<H2fromLbFilter>(cfgc)};
246+
}

‎EventFiltering/filterTables.h‎

Lines changed: 15 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -210,8 +210,12 @@ DECLARE_SOA_COLUMN(EtaPrimeP, hasEtaPrimeP, bool); //! eta'P meson candidate (
210210
DECLARE_SOA_COLUMN(EtaPrimePP, hasEtaPrimePP, bool); //! eta'PP meson candidate (3pi) in the collision
211211
DECLARE_SOA_COLUMN(EtaPrimed, hasEtaPrimed, bool); //! eta'd meson candidate (3pi) in the collision
212212

213+
// deuterons non prompt
214+
DECLARE_SOA_COLUMN(H2fromLb, hasH2fromLb, bool); //! deuteron from Lb decay
215+
213216
} // namespace filtering
214217

218+
215219
namespace decision
216220
{
217221

@@ -362,6 +366,12 @@ DECLARE_SOA_TABLE(HeavyNeutralMesonFilters, "AOD", "HNMesonFilters", //!
362366

363367
using HeavyNeutralMesonFilter = HeavyNeutralMesonFilters::iterator;
364368

369+
// beauty non prompt deuterons
370+
DECLARE_SOA_TABLE(H2fromLbFilters, "AOD", "H2LbFilters", //!
371+
filtering::H2fromLb);
372+
using H2fromLbFilter = H2fromLbFilters::iterator;
373+
374+
365375
// cefp decision
366376
DECLARE_SOA_TABLE(CefpDecisions, "AOD", "CefpDecision", //!
367377
decision::BCId, decision::GlobalBCId, decision::EvSelBC, decision::CollisionTime, decision::CollisionTimeRes, decision::CefpTriggered0, decision::CefpTriggered1, decision::CefpSelected0, decision::CefpSelected1);
@@ -373,11 +383,11 @@ DECLARE_SOA_TABLE(BCRanges, "AOD", "BCRanges", //!
373383
using BCRange = BCRanges::iterator;
374384

375385
/// List of the available filters, the description of their tables and the name of the tasks
376-
constexpr int NumberOfFilters{15};
377-
constexpr std::array<char[32], NumberOfFilters> AvailableFilters{"NucleiFilters", "DiffractionFilters", "DqFilters", "HfFilters", "CFFilters", "JetFilters", "JetHFFilters", "FullJetFilters", "StrangenessFilters", "MultFilters", "PhotonFilters", "F1ProtonFilters", "DoublePhiFilters", "HeavyNeutralMesonFilters", "GlobalDimuonFilters"};
378-
constexpr std::array<char[16], NumberOfFilters> FilterDescriptions{"NucleiFilters", "DiffFilters", "DqFilters", "HfFilters", "CFFilters", "JetFilters", "JetHFFilters", "FullJetFilters", "LFStrgFilters", "MultFilters", "PhotonFilters", "F1ProtonFilters", "LF2PhiFilters", "HNMesonFilters", "GlDimuonFilters"};
379-
constexpr std::array<char[128], NumberOfFilters> FilteringTaskNames{"o2-analysis-nuclei-filter", "o2-analysis-diffraction-filter", "o2-analysis-dq-filter-pp-with-association", "o2-analysis-hf-filter", "o2-analysis-cf-filter", "o2-analysis-je-filter", "o2-analysis-je-hf-filter", "o2-analysis-fje-filter", "o2-analysis-lf-strangeness-filter", "o2-analysis-mult-filter", "o2-analysis-em-photon-filter", "o2-analysis-lf-f1proton-filter", "o2-analysis-lf-doublephi-filter", "o2-analysis-heavy-neutral-meson-filter", "o2-analysis-em-global-dimuon-filter"};
380-
constexpr o2::framework::pack<NucleiFilters, DiffractionFilters, DqFilters, HfFilters, CFFilters, JetFilters, JetHFFilters, FullJetFilters, StrangenessFilters, MultFilters, PhotonFilters, F1ProtonFilters, DoublePhiFilters, HeavyNeutralMesonFilters, GlobalDimuonFilters> FiltersPack;
386+
constexpr int NumberOfFilters{16};
387+
constexpr std::array<char[32], NumberOfFilters> AvailableFilters{"NucleiFilters", "DiffractionFilters", "DqFilters", "HfFilters", "CFFilters", "JetFilters", "JetHFFilters", "FullJetFilters", "StrangenessFilters", "MultFilters", "PhotonFilters", "F1ProtonFilters", "DoublePhiFilters", "HeavyNeutralMesonFilters", "GlobalDimuonFilters", "H2fromLbFilters"};
388+
constexpr std::array<char[16], NumberOfFilters> FilterDescriptions{"NucleiFilters", "DiffFilters", "DqFilters", "HfFilters", "CFFilters", "JetFilters", "JetHFFilters", "FullJetFilters", "LFStrgFilters", "MultFilters", "PhotonFilters", "F1ProtonFilters", "LF2PhiFilters", "HNMesonFilters", "GlDimuonFilters", "H2LbFilters"};
389+
constexpr std::array<char[128], NumberOfFilters> FilteringTaskNames{"o2-analysis-nuclei-filter", "o2-analysis-diffraction-filter", "o2-analysis-dq-filter-pp-with-association", "o2-analysis-hf-filter", "o2-analysis-cf-filter", "o2-analysis-je-filter", "o2-analysis-je-hf-filter", "o2-analysis-fje-filter", "o2-analysis-lf-strangeness-filter", "o2-analysis-mult-filter", "o2-analysis-em-photon-filter", "o2-analysis-lf-f1proton-filter", "o2-analysis-lf-doublephi-filter", "o2-analysis-heavy-neutral-meson-filter", "o2-analysis-em-global-dimuon-filter", "o2-analysis-h2-from-beauty-filter"};
390+
constexpr o2::framework::pack<NucleiFilters, DiffractionFilters, DqFilters, HfFilters, CFFilters, JetFilters, JetHFFilters, FullJetFilters, StrangenessFilters, MultFilters, PhotonFilters, F1ProtonFilters, DoublePhiFilters, HeavyNeutralMesonFilters, GlobalDimuonFilters, H2fromLbFilters> FiltersPack;
381391
static_assert(o2::framework::pack_size(FiltersPack) == NumberOfFilters);
382392

383393
template <typename T, typename C>

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