[d2n-analysis-talk] d2n analysis meeting on July 5 is CANCELLED, next meeting will be July 12

[Matthew R. Posik]

Hi Brad,

   I forgot that Dave and I will be in the GEANT 4 workshop at JLab on July
12th, so we will not be able to make it to the d2 meeting at that time.
Would we be able to move it to Friday 7/13 ? Any time after 12:30 will be
fine.

-Matt

On Thu, Jun 28, 2012 at 4:51 PM, Brad Sawatzky <brads at jlab.org> wrote:

> Hi all,
>
> We decided to cancel the July 5th meeting, so our next meeting will be
> on July 12 at the usual time.
>
> I'm hoping that Vahe/Gregg may be able to attend the June 12 meeting and
> give us a status report on the simulation work.  A couple of the top
> priorities for near-term analysis need some simulation studies:
> - Understanding pair-symmetric backgrounds
>  - simulation will let us understand the bend-up vs. bend-down
>    differences (ie. is it all "geometry")
>  - generate plots and show data vs. simulation to see if the
>    trends match
>    - bend-down e+ : bend-up e+    vs. x (or momentum, etc)
>    - bend-up   e+ : bend-up e-    vs. x (or momentum, etc)
>
> - Investigate trackless events
>  - only ~15% of our T2 triggers have a track --- why?
>  - Kalyan comments that Transversity analysis thinks that the bulk of
>    the trackless events are really pi0 decays
>    - details are in a long-note and/or Transversity ELOG entries by
>      Xin/Kalyan
>    - suggestion was made that these trackless events could be a
>      handle on pi0-decay related charged backgrounds(??)
>      - ie. use these trackless "pi0" events to calibrate pi0 yields
>        in simulation
>        - simulation then helps tell us what fraction of those total
>          pi0 yields show up as e+:e- backgrounds -- seems possible,
>          but probably difficult...
>
>
>
> -- Brad
>
> --
> Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
> Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
> The most exciting phrase to hear in science, the one that heralds new
>  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov
> _______________________________________________
> d2n-analysis-talk mailing list
> d2n-analysis-talk at jlab.org
> https://mailman.jlab.org/mailman/listinfo/d2n-analysis-talk
>



-- 
Matthew Posik
Email: posik at temple.edu
Temple University Physics Dept.
Office: BA-319
Office #:  215-204-1331
WebSites:
Temple:
http://quarks.temple.edu/
d2n:
http://hallaweb.jlab.org/experiment/E06-014/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://mailman.jlab.org/pipermail/d2n-analysis-talk/attachments/20120629/2a32b721/attachment.html