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

[Brad Sawatzky]

Oh yeah, I had forgotten about that workshop.  Friday is fine with me.

Diana, Gregg, Vahe, Zein-Eddine:  
  Could Friday afternoon work for you?  Anytime that afternoon would be
  fine with me.

-- Brad

On Fri, 29 Jun 2012, Matthew R. Posik wrote:

> 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