Hi all,
Ive performed the new checks on KL that were discussed in the last
1) I've added in anaRecoil two histograms filled by default.
They contain the information on the energy of TRUE KL.
Here's the result for  generic B0 2000:
(as it comes... next time I'll promise to use log scale)
(with a cut on energy = 0)

2) Study of true and fake Klongs:
Here are the results..

This is (just for 2002 generic MC SP4 B0) energy of all Klongs selected
with the makimum likelihood method with, superimposed, the same spectrum
JUST for true Klongs. Discrepancies are not large (are expected?).

The data-MC comparisons are coming separately for true and fake Klongs....
I needed to rerun the generic in order to have the index of Klongs
available and jobs are still running: tomorrow I'll post the plots. I do
not know if Urs want to start the reprocessing with the smearing in the

3) Urs(all)I'm proposing to add in anaQa the following:

    //Correction applied to True Klongs.
    if( idGam[i] == 130 ){
      energyGam[i] *= (0.274351/0.225545);

in the loop that makes the four momentum of neutral particles.
That should be added before ANY use of energyGam[i] variable.
Let me know if you want me to commit that piece of code in in
such a way that Urs has a clear example of what I'm proposing before
translating it to anaQa.

Let me know if there's anything still missing on my plate before the sys


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

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