Print

Print


Hi all,
here's some material for today's meeting:

1)I've tried to play a bit with Kl stuff.
Thos are three data-MC comparisons for the energy of those neutrals that
have the largest likelihood to be Kl:

..as it is (no correction applied)
http://www.slac.stanford.edu/~asarti/recoil/devel/KLstu/nu/comparison5mxminpileptoncuts.ps

applying a correction (on MC)::
newE(g) = E(g)*(mean_data(enr.)/mean_MC(enr.))
http://www.slac.stanford.edu/~asarti/recoil/devel/KLstu/nurewsh/comparison5mxminpileptoncuts.ps

applying a correction (on MC)::
newE(g) = E(g)+(mean_data(enr.)-mean_MC(enr.))
http://www.slac.stanford.edu/~asarti/recoil/devel/KLstu/nurewsh/comparison5mxminpileptoncuts.ps

The first correction  method seems more powerful
than the second one:
there are suggestions for different correction procedures?

Once we agree on wich correction we need to use to reweight
our MC I'll prepare the anaRecoil code in such a way that
the energy of those neutrals that have a KL likelihood > 0

   energyGam[i] *= f(corr_factor);

can be corrected for the given factor and Urs/whoever else
can rerun the analysis rootfile production.

2)I've played a bit with the m_b mass that can be extracted by
our datasample and here's the output of my very firt study:
http://www.slac.stanford.edu/~asarti/recoil/myThesis/mbmeas.html

Are you going to call me in Ferrara?
alessio

______________________________________________________
Alessio Sarti     Universita' & I.N.F.N. Ferrara

>>>I'm in Ferrara<<<

 tel  +39-0532-974328  Ferrara
roma  +39-06-49914338
SLAC +001-650-926-2972

"... e a un Dio 'fatti il culo' non credere mai..."
(F. De Andre')

"He was turning over in his mind an intresting new concept in
Thau-dimensional physics which unified time, space, magnetism, gravity
and, for some reason, broccoli".  (T. Pratchett: "Pyramids")