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Hi Ric, but Daniele showed already that the mX-spectrum changes significantly when applying the bremsstrahlung recovery. So, it may affect the measurement of the mX spectrum, that is the unfolding. Cheers, Heiko On Thu, 6 May 2004, Riccardo Faccini wrote: > Hi Kerstin, > bremsstrahlung typically has a relevant effects on moments. In the case of > a cut on a variable (mX) which has a >350 MeV resolution, it does not seem > to be a problem we should worry about. > > Also, the fact that Daniele's algorithm has changed our result within the > rounding used to quote it shows we should not worry about it. > > I think you should mutuate the studies from BAD 636 where thorsten had to > take care of the problem in detail > ciao > ric > > ______________________________________________________ > Riccardo Faccini > Universita' "La Sapienza" & I.N.F.N. Roma > tel +39/06/49914798 Fax.: +39/06/4957697 > http://www.slac.stanford.edu/~rfaccini > Univ. La Sapienza. 2,Ple Aldo Moro, I-00185 Roma Dipartimento di Fisica > > "I don't understand what you say, but I believe I disagree" > > On Thu, 6 May 2004, Kerstin Tackmann wrote: > > > > > Hi all, > > > > as you know we are currently redoing the systematics we had with the new > > signal MC reweighting, bremsstrahlung recovery and new ddecay.table and > > also work on the systematics which we were still missing with the former > > reweightings and ntuples. > > > > Apart from the sources of uncertainties listed in BAD 540 we might have to > > consider a systematic uncertainty coming from the simulation of > > bremsstrahlung and final state radiation in the MC. We should do this > > consistently with what you are doing. Is there already some recipe which > > you use or plan to use (together with Daniele's bremsstrahlung recovery)? > > > > Cheers, > > Kerstin > > > > >