Dear Gerry,
Yes, at the time of the proposal the phenix tracking could determine
the charge of the electron, and I still think it holds true now, but
there were always two formulas given for the momentum resolution, one
could and one couldn't determine the charge. Right now we have
deltap/p=1.1%p, which is not good enough for separation, however I
think that this corresponds to the poorer resolution conditions, so I
think that it could be improved a factor of two by using TEC or the
Kalman Filter, existing stuff which just has to be applied. Regarding
whether I used W->e in the famous sapin plot, the answer is ``mai oui,
monsieur''