Hello,
I think I understood the difference between the 1d weights I compute at
generator's level and the one alessio computes on our ntuples AFTER
requiring the presence of a Breco. The
difference was already found to be related to the different mx shape
on non-resonant Vub MC
( http://www.slac.stanford.edu/~asarti/recoil/mxq2/TestRicgen.eps )
I run on non-resonant Vub MC dumping all the evnts and produced the mx
distribution with no cuts (top) , requiring the existence of a Breco
(middle) and compared them with the plot I produced at generator's level
(bottom):
http://www.slac.stanford.edu/~rfaccini/phys/vub/testbreco.ps
The impact on the weights is not small because the fraction of
non-resonant event in the first large bin (<1.2) goes from 40% (before
Breco) to 26 % (after breco)
ciao
ric
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