DerivationFramework::BoostedTTbarSkimmingToolAlg Class Reference

Skimming tool that requires exactly one lepton and truth-level m_ttbar > cut. More...

#include <BoostedTTbarSkimmingToolAlg.h>

Inheritance diagram for DerivationFramework::BoostedTTbarSkimmingToolAlg:

Collaboration diagram for DerivationFramework::BoostedTTbarSkimmingToolAlg:

Public Member Functions
	BoostedTTbarSkimmingToolAlg (const std::string &t, const std::string &n, const IInterface *p)
virtual	~BoostedTTbarSkimmingToolAlg ()=default
virtual StatusCode	initialize () override
virtual StatusCode	finalize () override
virtual bool	eventPassesFilter (const EventContext &ctx) const override
	Returns true if event passes the filter.

Public Attributes
Gaudi::Property< double >	m_ttbarCut {this, "ttbarCut", 0.0, "ttbar mass cut"}
	Property: m_ttbar cut in MeV.

Private Attributes
std::atomic< unsigned int >	m_ntot {0}
std::atomic< unsigned int >	m_npass {0}

Detailed Description

Skimming tool that requires exactly one lepton and truth-level m_ttbar > cut.

Definition at line 18 of file BoostedTTbarSkimmingToolAlg.h.

Constructor & Destructor Documentation

BoostedTTbarSkimmingToolAlg()

DerivationFramework::BoostedTTbarSkimmingToolAlg::BoostedTTbarSkimmingToolAlg	(	const std::string &	t,
		const std::string &	n,
		const IInterface *	p )

Definition at line 11 of file BoostedTTbarSkimmingToolAlg.cxx.

  : base_class(t, n, p)
{
}

~BoostedTTbarSkimmingToolAlg()

virtual DerivationFramework::BoostedTTbarSkimmingToolAlg::~BoostedTTbarSkimmingToolAlg ( )

virtualdefault

Member Function Documentation

eventPassesFilter()

bool DerivationFramework::BoostedTTbarSkimmingToolAlg::eventPassesFilter ( const EventContext & ctx ) const

overridevirtual

Returns true if event passes the filter.

Definition at line 25 of file BoostedTTbarSkimmingToolAlg.cxx.

{
    ++m_ntot;
 
 
    const xAOD::TruthParticleContainer* truth = nullptr;
    if (evtStore()->retrieve(truth, "TruthParticles").isFailure()) {
        ATH_MSG_ERROR("Failed to retrieve TruthParticles");
        return false;
    }
 
    TLorentzVector top, antitop;
 
    for (const auto* p : *truth) {
        if (std::abs(p->pdgId()) != 6) continue;
 
        bool hasW = false;
        bool hasB = false;
        for (unsigned int ic = 0; ic < p->nChildren(); ++ic) {
            const xAOD::TruthParticle* child = p->child(ic);
            if (!child) continue;
            if (std::abs(child->pdgId()) == 24) hasW = true;
            if (std::abs(child->pdgId()) == 5)  hasB = true;
        }
        if (!hasW || !hasB) continue;
 
        TLorentzVector vec;
        vec.SetPtEtaPhiM(p->pt(), p->eta(), p->phi(), p->m());
        if (p->pdgId() > 0) top = vec;
        else antitop = vec;
    }
 
    double mass_ttbar = -1.;
    if (top.Pt() > 0 && antitop.Pt() > 0) mass_ttbar = (top + antitop).M();
 
    if (mass_ttbar <= m_ttbarCut) return false;
 
    ++m_npass;
    return true;
}

finalize()

StatusCode DerivationFramework::BoostedTTbarSkimmingToolAlg::finalize ( )

overridevirtual

Definition at line 19 of file BoostedTTbarSkimmingToolAlg.cxx.

{
    ATH_MSG_INFO("Processed "<< m_ntot <<" events, "<< m_npass<<" events passed filter ");
    return StatusCode::SUCCESS;
}

initialize()

virtual StatusCode DerivationFramework::BoostedTTbarSkimmingToolAlg::initialize ( )

inlineoverridevirtual

Definition at line 24 of file BoostedTTbarSkimmingToolAlg.h.

{ return StatusCode::SUCCESS; }

Member Data Documentation

m_npass

std::atomic<unsigned int> DerivationFramework::BoostedTTbarSkimmingToolAlg::m_npass {0}

mutableprivate

Definition at line 35 of file BoostedTTbarSkimmingToolAlg.h.

{0};

m_ntot

std::atomic<unsigned int> DerivationFramework::BoostedTTbarSkimmingToolAlg::m_ntot {0}

mutableprivate

Definition at line 34 of file BoostedTTbarSkimmingToolAlg.h.

{0};

m_ttbarCut

Gaudi::Property<double> DerivationFramework::BoostedTTbarSkimmingToolAlg::m_ttbarCut {this, "ttbarCut", 0.0, "ttbar mass cut"}

Property: m_ttbar cut in MeV.

Definition at line 31 of file BoostedTTbarSkimmingToolAlg.h.

{this, "ttbarCut", 0.0, "ttbar mass cut"};

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The documentation for this class was generated from the following files:

• BoostedTTbarSkimmingToolAlg.h
• BoostedTTbarSkimmingToolAlg.cxx