[Hps-analysis] invariant mass Data VS My MC

[Luca Colaneri]

Hi Maurik,


Il 08/10/15 15:12, Maurik Holtrop ha scritto:
> 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.
Sure, I won't risk any udate!
>
> 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.

I didn't apply any cut, just read the collection and used the .getMass() 
method.
In the data I see what seems like an overlap of two distributions. I 
need to know how the collection gets filled to understand something. 
This is interesting, though.
> Also, does the MC sample include full beam background, or is this only 
> the tridents?
I let Bradley handle the reconstruction, anyhow he run my data through 
the same chain as the other MC, so it should contain everything.
>
> 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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