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I am not sure, but I would think that this overestimates the effect. I would think that the probability to _miss_ a 100MeV photon is ony given by the probability to miss-reconstruct its energy below your lower cut value. Cheers, Rolf On Friday 18 June 2004 13:39, Heiko Lacker wrote: > Hi Urs, > > the idea is to use the pi0 recipe. I don't > think we have something better for the time > being ... > > > Heiko > > On Fri, 18 Jun 2004, Urs Langenegger wrote: > > Hoi Kerstin, > > > > > why in the BAD 540 analysis the uncertainty coming from neutral > > > efficiency has not been included as a contribution to the > > > systematic uncertainty? > > > > Is there a recipe for the inefficiency for single photons? I know of > > one for pi0, but not for photons. > > > > Cheers, > > --U. -- contacts: http://www.physi.uni-heidelberg.de/~dubitzky