Photon attributes

The photon-finding package has been introduced in 1992 in the ALEPHLIB and has been deeply modified many times, getting each time a new name and giving different output banks.

The GAMPEK photon algorithm is described in the reports ALEPH 93-107 and ALEPH 94-057.

Users who want to study only $\pi^{0}_{}$ production may use directly the QPI0DO algorithm described in 12.9 , page  .

In the descriptions below , the index I refers to the ``tracks'' of the GAT section and runs from KFGAT to KLGAT.