 |
 |
I did the same plots for electrons and muons separately spectra http://www.slac.stanford.edu/~daniele/vub/el/pcmslepvubandvcb.eps http://www.slac.stanford.edu/~daniele/vub/mu/pcmslepvubandvcb.eps efficiency http://www.slac.stanford.edu/~daniele/vub/el/effpcmslepvubandvcb.eps http://www.slac.stanford.edu/~daniele/vub/mu/effpcmslepvubandvcb.eps ratio http://www.slac.stanford.edu/~daniele/vub/el/ratioeff.eps http://www.slac.stanford.edu/~daniele/vub/mu/ratioeff.eps -> electron efficiency is 70% -> muon efficiency is 45% Daniele On Wed, 20 Nov 2002, Daniele del Re wrote: > > > could you please explain why 60% is what we expect? I guess that your > > plot shows the reconstructed electron yield, is that right? It cannot > > be the generated spectrum since that would extend further down towards > > low momentum. It cannot be a mixture between e and mu since then we'd > > see changes in the transition region where the mu identification eff > > goes to zero. > > reconstructed momentum for electrons + muons. Since the beginning we > discussed about this 50% (with the cut at 1 GeV) in lepton selection > efficiency... I expected 50% since it is 50% on data. I will try to do > the breakdown e and mu. > > > > > >From acceptance (geometric and momentum) I would expect to see about > > ~80% of the spectrum. This is at least what I saw in the breco tagged > > sl BF analysis of last summer and is consistent with what Thorsten has > > in the lepton tagged analysis. > > > > what are they getting in the "revenge" of your analysis (Valery ecc...) > for this efficiency? > > Daniele > >