| 31 | | * Photons: The photon identification is based on the profile of the energy deposits in the first and second layers of the electromagnetic calorimeter. Candidate photons are required tohave ET_gamma >10GeV,to satisfy the "loose" identification criteria and to be within |η| < 2.37. Photons used in the event must satisfy additionally the "tight" selection criteria, have |η| < 1.37 or 1.52 < |η| < 2.37. They must be isolated by requiring the energy in the calorimeter |
| 32 | | in a cone of size Delta R = sqrt((Delta η)^2 + (Delta Phi)^2) = 0.4 around the cluster barycentre, excluding the energy associated with the photon cluster, to be less than 2.45 GeV + 0.022 x ET_gamma. |
| | 31 | * Photons: The photon identification is based on the profile of the energy deposits in the first and second layers of the electromagnetic calorimeter. Candidate photons are required tohave ET_gamma >10GeV,to satisfy the "loose" identification criteria and to be within |η| < 2.37. Photons used in the event must satisfy additionally the "tight" selection criteria, have |η| < 1.37 or 1.52 < |η| < 2.37. They must be isolated by requiring the energy in the calorimeter in a cone of size Delta R = sqrt((Delta η)^2^ + (Delta Phi)^2^) = 0.4 around the cluster barycentre, excluding the energy associated with the photon cluster, to be less than 2.45 GeV + 0.022 x ET_gamma. |
