Direct ɣ in d+Au collisions


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Variables and Accessors under PHCentralTrack Node (used for charged particle analyses)
   Type    Name    Description
   float    get_pemcx    x-component of the projection of the cgl track onto the EMC (cm)
   float    get_pemcy    y-component of the projection of the cgl track onto the EMC (cm)
   float    get_pemcz    z-component of the projection of the cgl track onto the EMC (cm)
   float    get_plemc    path Length following particle trajectory from vertex to EMC
   float    get_temc    time of the EMC hit. This time has been back-corrected inPHCentralTracks to be the physical time instead of the photon flash time. The reason is that the former is more useful for calculating properties of a charged track.
   float    get_emcdphi    difference in phi (rads) between the track model projection and the hit in emc
   float    get_emcdz    difference in Z (cms) between the track model projection and the hit in emc
   float    get_emcsdphi    emcdphi variable normalized to SIGMAS (after calibrations)
   float    get_emcsdz    emcdz variable normalized to SIGMAS (after calibrations)
   float    get_emcsdphi_e    position resolution of the EMCal depends upon the shower type. emcdphi variable in SIGMAS assuming the resoution appropriate for EM showers (after calibrations)
   float    get_emcsdz_e    position resolution of the EMCal depends upon the shower type. emcdz variable in SIGMAS assuming the resoution appropriate for EM showers (after calibrations)
   float    get_ecore    energy deposited in the EMC "shower core"
   float    get_dep    reduced variable for ecore/mom(E/p) that is centered at zero, with sigma around one. It is convenient cut as the known pt and charge dependence is fully accounted for
   float    get_ecorr    EMC corrected energy (after calibrations)
   float    get_ecent    energy deposited in the central tower
   float    get_prob    probability that the particle shower is Electro-magnetic.
   short    get_sect    EMC sector of the associated cluster
   short    get_ysect    EMC tower Y index inside the sector
   short    get_zsect    EMC tower Z index inside the sector
   short    get_twrhit    tower hit of ....(Need to check with Gabor)
   int    get_deadmap    flag the denotes whether the EMC shower borders a known dead tower (after calibrations)
   int    get_warnmap    flag that denotes whether the EMC shower borders a known hot tower (after calibrations)
   float    get_stemc    swapped version of temc
   float    get_semcdphi    swapped version of emcdphi
   float    get_semcdz    swapped version of emcdz
   float    get_semcsdphi    swapped version of emcsdphi
   float    get_semcsdz    swapped version of emcsdz
   float    get_semcsdphi_e    swapped version of emcsdphi_e
   float    get_semcsdz_e    swapped version of emcsdz_e
   float    get_secore    swapped version of ecore
   float    get_secorr    swapped version of ecorr
   float    get_sprob    swapped version of prob
   short    get_sysect    swapped version of ysect
   short    get_szsect    swapped version of zsect
   short    get_stwrhit    swapped version of twrhit
   int    get_sdeadmap    swapped version of deadmap
   int    get_swarnmap    swapped version of warnmap
   float    get_secent    swapped version of ecent


Variables and Accessors under emcClusterContainer (used for neutral meson analyses)

EMCal has its own classes emcClusterContainer and emcClusterContent that contain variables used mainly for the analysis of neutral mesons. The small code snippet below shows the usage of these classes and one example to access a variable. The rest of the variables listed below in the table can be accessed in the same manner.

PHCentralTrack* d_cnt = getClass<PHCentralTrack>(topNode,"PHCentralTrack");
emcClusterContainer *emccont = getClass<emcClusterContainer> (topNode, "emcClusterContainer");
emcClusterContent* emc = emccont->getCluster(icluster);
for ( unsigned int itrk = 0; itrk < d_cnt->get_npart(); ++itrk )
{
  for (int iclus = 0; iclus < int( emccont->size() ); iclus++)
   {
     emc = emccont->getCluster(iclus);
     float energy  = emc->ecore();
   }
 }

A complete list of these EMCal specific variables is as follows:

   Type    Name    Description
   short    id    index of the current emcal cluster
   float    ecore    energy deposited in the central tower
   short    x    X position of emc cluster
   short    y    Y position of emc cluster
   short    z    Z position of emc cluster
   short    iypos    Z position of emc cluster
   float    izpos    energy deposited in the shower core
   float    chi2    chi2 for the accociated cluster (Need to check with Gabor)
   float    prob_photon    Probablity that shower is from a photon (Need to check with Gabor)
   float    tofcorr    Corrected time-of-flight
   float    ecent    energy deposited in the tower
   float    e9    Energy deduced from a simple 3x3 sum and is useful for estimating trigger efficiencies