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Hi Heiko, this is what I meant: "we - BRBR measurement - don't need it, but you should see what has been done by thorsten" Sorry if I was not clear 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, Heiko Lacker wrote: > 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 > > > > > > > > >