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Standard Photon performance:

Some slides presenting summary of standard photon reconstruction and id are available below.

For release 12.0.6
  • (isEM & 0x2)==0 means identification based only on the hadronic leakage
  • (isEM & 0x4)==0 means identification based only on the 2nd sampling of the LArEM calorimeter
  • (isEM & 0x8)==0 means identification based only on the 1st sampling of the LArEM calorimeter
  • (isEM & 0xFF)==0 means identification based only on the calorimeter
  • (isEM & 0xF00)==0 means only track cuts
  • (isEM & 0x7FF)==0 means all cuts except TRT
  • (isEM)==0 means all cuts

For release >=13
  • (isEM & 0x2)==0 means identification based only on the hadronic leakage
  • (isEM & 0xF0)==0 means identification based only on the 2nd sampling of the LArEM calorimeter
  • (isEM & 0xFF00)==0 means identification based only on the 1st sampling of the LArEM calorimeter
  • (isEM & 0xFFFF)==0 means identification based only on the calorimeter
  • (isEM & 0xF0000)==0 means only track cuts
  • (isEM & 0x7FFFFF)==0 means all cuts except TRT
  • (isEM)==0 means all cuts

LogLikeLihood method

-- HelenHayward - 17 May 2007
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Topic revision: r3 - 17 May 2007, HelenHayward
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