[Clas_hadron] [G14_run] Draft slides for my talk on NSTAR2013

[Eugene Pasyuk]

Igor, 

Your statement about threshold for proton would be correct if we would attempt to detect spectator proton.
We don't do that, spectator is reconstructed as a missing particle. For missing particle there is no threshold problem. If you look at the spectrum you will see it starts at 0.

-Eugene

----- Original Message -----
> From: "Igor Strakovsky" <igor at va.gwu.edu>
> To: "Reinhard Schumacher" <schumacher at cmu.edu>, "Tsuneo Kageya" <kageya at jlab.org>
> Cc: "g14 run" <g14_run at jlab.org>, "CLAS Hadron Spectroscopy" <clas_hadron at jlab.org>
> Sent: Tuesday, May 21, 2013 9:25:23 AM
> Subject: Re: [G14_run] Draft slides for my talk on NSTAR2013
> 
> Dear Reinhard,
> 
> I am afraid to try to correct you but the "select quasi-free
> neutrons"
> condition is not possible for CLAS.  CLAS cannot make a deal with
> proton
> with p < 200 MeV/c - there is a cut-off.  The 'quasi-free neutron'
> term
> is applying to the protons for p = 50 MeV/c or less.
> 
> Best, Igor
> 
> On Tue, 21 May 2013 09:18:49 -0400, Reinhard Schumacher
> <schumacher at cmu.edu>
> wrote:
> 
> > Hello Tsuneo,
> > 	I took a look at your slides for NSTAR2013 and have a few
> > 	suggestions
> > about them.  Overall, they look to be in good shape.
> > 
> > Slide 11:  the position of the coplanarity cuts seems quite
> > arbitrary.
> > I would ask:  how does the result change if you double the width of
> > the cut?
> > 
> > Slide 13: For this slide you state the energy range as 1.1 to 1.3,
> > whereas the previous two slides had 0.7 to 1.3.  For consistency,
> > maybe
> > keep the energy range the same?  Also, on this slide you have the
> > phrase
> > "excludes bound neutrons".  This is needlessly obscure and not
> > strictly
> > correct.  Maybe you want to say "select quasi-free neutrons"
> > 
> > Have a great trip.
> > 
> > Reinhard.
> > 
> > ___________________________________________________________________
> > Reinhard Schumacher         Department of Physics, 5000 Forbes Ave.
> > Carnegie Mellon University, Pittsburgh, PA 15213, U.S.A.
> > phone: 412-268-5177         web: www-meg.phys.cmu.edu/~schumach
> > ___________________________________________________________________
> > 
> > On 05/20/2013 11:12 PM, Tsuneo Kageya wrote:
> >> Hi,
> >>
> >>   I would like to get some comments and suggestions for my slides
> >>   on
> >>NSTAR2013.
> >> My talk is related to the preliminary double spin asymmetries on
> >> g14
> >>experiments.
> >> I have 20 minutes including the discussion.
> >> I got comments from Volker and others when I showed slides and
> >> tried talking
> >>about this this Monday.
> >> I modified based on their comments, but I have still homework to
> >> do; page
> >>10, need to show the graph
> >> with colors.   Most of others have been changed.
> >>
> >>   Some of you may have different aspects; please let me know, if
> >>   you have
> >>comments.
> >> A pdf file is attached.
> >>
> >>         Regards, Tsuneo Kageya.
> >>
> >>
> >>
> >>
> >>
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> 
> Igor Strakovsky, SAID CNS The George Washington University
> Tel: 703-726-8344(NV),202-994-4742(FB),Skype: igors1945_2
> Fax: 202-994-3001(FB),Emails: igor at va.gwu.edu, igor at jlab.org
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