Input parameters:

1. pT of photon

2. Energy deposited in preshower layer1

3. Energy deposited in preshower layer 2

4. Energy deposited in postshower layer

5. Energy deposited in a 3x3 patch of towers

6. No of barrel towers fired

7. No of endcap towers fired

8. No of charged tracks associated with a photon candidate

How does signal efficiency vary with different pT thresholds?

pT > 7GeV                                                                                                                                       pT>8 GeV

pT > 9GeV                                                                                                                                 pT > 10 GeV