[G8b_run] Newly cooked data

[Charles Hanretty]

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
>
> _______________________________________________
> G8b_run mailing list
> G8b_run at jlab.org
> https://mailman.jlab.org/mailman/listinfo/g8b_run
>



-- 
Cheers,
Charles Hanretty
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://mailman.jlab.org/pipermail/g8b_run/attachments/20130624/b51df1a0/attachment-0001.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: beta_v_mom_ppippim_noCutsAndCuts_048483A01B02.png
Type: image/png
Size: 46156 bytes
Desc: not available
Url : https://mailman.jlab.org/pipermail/g8b_run/attachments/20130624/b51df1a0/attachment-0001.png