[Hps-analysis] MC Trident Discrepancy

[Maurik Holtrop]

Hi Bradley,

I am glad you caught this, but I think that your fix will result in more event for MC, so the discrepancy between data and MC will get worse. Or do I have this the wrong way around?
Has pass3 MC started? 

Best,
          Maurik

-----------------------------------------------

> On Oct 16, 2015, at 3:57 PM, Bradley T Yale <btu29 at wildcats.unh.edu> wrote:
> 
> Hey everyone,
> 
> This could be a major cause of the discrepancy in relative trident yields in MC.
> 
> 
> The way I've been reading out the pure MC components is 100 generated files -> 1 recon file, but it seems that this was too many events for the readout step to handle, and it only processes a certain number of files before stopping. However, the jobs never report an error and complete fine while using <100 files. This will greatly affect the number of events used for normalization.
> 
> 
> If looking at Pass2 MC (tagged '3.4.0'), then the number of generated files each recon file corresponds to is:
> 
> 
> BH: 1 recon file = 63-100 generated files (depending on whether the fieldmap was applied)
> 
> RAD: 1 recon file = 16-30 generated files
> 
> tritrig: 1 recon file = 10 generated files
> 
> 
> This can be easily fixed by standardizing the readout of everything without background to 10-to-1, which I will start doing in the pass3 folder, and that number of files can then be assumed.
> 
> In the meantime, the number of input files and events used for pass2 MC readout can be found listed in the corresponding logs and your calculations adjusted accordingly:
> 
> /work/hallb/hps/mc_production/pass2/logs/readout/
> 
> 
> I am very sorry for not catching this sooner.
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