TBrowser t;

    int             run;                // Run number
    float           lumi;               // Luminosity section
    long long       event;              // Event number
    float           ntrg;               // Number of triggers
    bool            triggers[ntrg];     // Trigger bits
    vector<string>  *triggernames;      // Trigger names
    float           prescales[ntrg];    // Trigger prescales
    float           met;                // Missing transverse energy
    float           sumet;              // Sum of transverse energy
    float           rho;                // Energy density

    int     njet;           // Number of AK5 jets
    float   jet_pt[njet];   // Corrected transverse momentum
    float   jet_eta[njet];  // Pseudorapidity
    float   jet_phi[njet];  // Azimuthal angle
    float   jet_E[njet];    // Energy

    bool    jet_tightID[njet];  // Tight selection pass/fail
    float   jet_area[njet];     // Jet area in eta-phi plane
    float   jet_jes[njet];      // Jet energy correction
    int     jet_igen[njet];     // Index of the matching generated jet

    float    chf[njet];      // Charged hadron energy fraction
    float    nhf[njet];      // Neutral hadron energy fraction
    float    phf[njet];      // Photon energy fraction
    float    elf[njet];      // Electron energy fraction
    float    muf[njet];      // Muon energy fraction
    float    hf_hf[njet];    // Forward calorimeter (HF) hadron energy fraction
    float    hf_phf[njet];   // HF photon energy fraction
    int      hf_hm[njet];    // HF hadron multiplicity
    int      hf_phm[njet];   // HF photon multiplicity
    int      chm[njet];      // Charged hadron multiplicity
    int      nhm[njet];      // Neutral hadron multiplicity
    int      phm[njet];      // Photon multiplicity
    int      elm[njet];      // Electron multiplicity
    int      mum[njet];      // Muon multiplicity
    float    beta[njet];     // Fraction of chf associated to the hard process
    float    bstar[njet];    // Fraction of chf associated to pile-up

    int     njet_ak7;               // Number of jets
    float   jet_pt_ak7[njet_ak7];   // Transverse momentum
    float   jet_eta_ak7[njet_ak7];  // Pseudorapidity
    float   jet_phi_ak7[njet_ak7];  // Azimuthal angle
    float   jet_E_ak7[njet_ak7];    // Energy
    float   jet_area_ak7[njet_ak7]; // Jet area
    float   jet_jes_ak7[njet_ak7];  // Jet energy corection factor
    int     ak7_to_ak5[njet_ak7];   // Index of the corresponding AK5 jet 

    int     ngen;           // Number of jets generated
    float   gen_pt[ngen];   // Transverse momentum
    float   gen_eta[ngen];  // Pseudorapidity
    float   gen_phi[ngen];  // Azimuthal angle
    float   gen_E[ngen];    // Energy

    float   pthat;          // Transverse momentum in the rest frame of the hard interaction
    float   mcweight;       // Monte Carlo weight of the event