[Hps-analysis] invariant mass Data VS My MC

[Graham, Mathew Thomas]

Hi Luca,

Two things…

1) TargetConstrainedV0Candidates consist of any e+e- pair in the event with no additional cuts.  So if one (or both) of the tracks are FEE, this will show up in the list.  I think that’s why your mass looks like it does...
2) TargetConstrainedV0Candidates in pass-2 actually will have both GBL candidates and regular seed track candidates, so you should probably pick one to plot.


On Oct 8, 2015, at 8:12 AM, Maurik Holtrop <maurik at physics.unh.edu<mailto:maurik at physics.unh.edu>> wrote:

Hi Luca,

I am really glad that at least you are up and running again with code. Probably should not update your trunk, or at least preserve your current one, so it doesn’t get messed up.

Did you impose any additional cuts to your data sample?  It looks like you did not and so have a large amount of extra background.
Also, does the MC sample include full beam background, or is this only the tridents?

Cheers,
Maurik


On Oct 8, 2015, at 9:05 AM, Luca Colaneri <luca.colaneri at roma2.infn.it<mailto:luca.colaneri at roma2.infn.it>> wrote:


Hello guys,
thanks to Bradley some of my events have been reconstructed. I read them and plotted the invariant mass using the "TargetConstrainedV0Candidates" collection.
I run the exact same driver over one file of run 5772 (pass2)
these are the results: My InvMass:

<invmassLuca.png>


this is from run 5772:

<invmassRun5772.png>

Real data looks wierd.

I would like to know how the "TargetConstrainedV0Candidates" collection gets filled, I tried to look in the code but I got lost.

today I can't attend the software meeting, maybe we can discuss it tomorrow. Until then, any comment is welcome

Cheers

L.


--
PhD Student,
Università degli Studi di Roma Tor Vergata
INFN sez. Roma2
Via della Ricerca Scientifica 1, 00133 Rome, Italy
+39 0672594562

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