The comparison on pi0 mass and width in different combinations of the supermodules

Statistics

LHC10c and LHC10e

Cluster selection

1. Misalignment from Rongrong applied
2. Pi0 calibration coefficients applied
3. Non-linearity correction applied (currently used the old "plateau" correction, the same as https://twiki.cern.ch/twiki/bin/view/ALICE/EMCALnonlinCorr)
4. Number of cells in cluster: no cuts
5. Cluster pt threshold: 0.5 GeV/c
6. Clusters with the leading cell closer that 1 cell to the SM edge and to warm cells were removed.

Symmetric Pi0 decays, pi0 mass vs E/2 of pi0

Symmetric pi0 decays are important for the current non-linearity correction. Looking at them one can have an idea how good the non-linearity actually works.

Both photons in one supermodule.	One photon in one supermodule, another in the other. Two supermodules in one sector.
One photon in one supermodule, another in the other. Two supermodules in different sectors.	Combined plot.

Pi0 mass vs pt

Pi0 width vs pt

How two cluster invariant mass in two supermodules look like?

In two supermodules in the same sector

photons in SM0 and SM1

photons in SM2 and SM3

Two supermodules in different sectors

photons in SM0 and SM2

photons in SM1 and SM3

Two supermodules in different sectors, diagonal supermodules

photons in SM0 and SM3

photons in SM1 and SM2

-- OlgaDriga - 03-Nov-2010