[G8b_run] Newly cooked data

[Barry Ritchie]

Yes, it seems pretty likely, looking at the two pictures, that the additional cuts (said to be ngrf, tagrid, angle, momentum, vertex, and confidence level) have removed a large fraction of good events. 

Barry Ritchie 
Vice Provost for Academic Personnel 
Arizona State University 
300 E. University Ave, Suite 420 
Tempe, AZ 85287-7805 
 
Phone: 480-965-7405 
Fax: 480-965-0785


-----Original Message-----
From: g8b_run-bounces at jlab.org [mailto:g8b_run-bounces at jlab.org] On Behalf Of Michael Dugger
Sent: Monday, June 24, 2013 7:53 AM
To: Charles Hanretty
Cc: g8b
Subject: Re: [G8b_run] Newly cooked data


Charles,

It looks like, after your cuts, you are left with about 19% of the original events. How does that compare with the previously cooked data?

Take care,
Michael


On Mon, 24 Jun 2013, Charles Hanretty wrote:

> Dear All,
>      Please find attached a set of beta v. momentum plots for gamma p 
> -> p pip pim reactions using the newly cooked data 
> (cooked_048483.A01.B02, the same file Mike used). The plot on the left 
> is the beta v. momentum distribution for all final state particles (p, 
> pip and pim) with no
> (notable) cuts; I only require a proton, pi+, pi- in the final state 
> using the GPID bank. The plot on the left is the same plot after all 
> of my cuts (ngrf, tagrid, angle, momentum, vertex, and confidence level).
>
>
> On Fri, Jun 21, 2013 at 1:31 PM, Michael Dugger <dugger at jlab.org> wrote:
>
>>
>> Hi,
>>
>> I was looking at some newly cooked data and am getting results for 
>> beta vs. momentum that look strange.
>>
>> The plot for the newly cooked data -> 
>> http://www.jlab.org/Hall-B/secure/g8b/ASU/tmp/NewBetaVsP.gif
>>
>> A plot of the previous version of cooked data -> 
>> http://www.jlab.org/Hall-B/secure/g8b/ASU/tmp/OldBetaVsP.gif
>>
>> The plots are from PERP, 1.5 GeV, run 48483. The new plot only 
>> contains events from file A01.B02, while the plot of the previous 
>> cook has all A01 files.
>>
>> The resolution looks much better, but we now have and extra stripe 
>> below the proton, and the stripe below the pions is crossing the 
>> kaons more heavily.
>>
>> Is anyone else seeing this sort of behavior?
>>
>> Take care,
>> Michael
>>
>> _______________________________________________
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>> G8b_run at jlab.org
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>>
>
>
>
> --
> Cheers,
> Charles Hanretty
>
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