[G14_run] From Dao Ho: DNP presentation

[Eugene Pasyuk]

It is probably I_circ rather than E for pi+pi-, at least for proton channel if compared to g1c data.

-Eugene

----- Original Message -----
> From: "Volker Crede" <crede at fsu.edu>
> To: daoh at andrew.cmu.edu
> Cc: "g14 run" <g14_run at jlab.org>
> Sent: Thursday, October 17, 2013 11:01:34 AM
> Subject: Re: [G14_run] From Dao Ho: DNP presentation
> 
> Dear Dao,
> 
> I noticed that you listed the E asymmetry for pi+pi- in your outline.
> On Slide 7, all y-axes are labeled E* Asymmetry but this cannot be
> correct. The E observable is the helicity difference and is a
> double-polarization observable. In the top right figure, you are
> comparing with Sungkyun Park's (g9a) and (most likely) with Steffen
> Strauch's g1c results. However, the latter had no target
> polarization. I am sure you mean the beam-helicity asymmetry which
> requires a circularly-polarized beam and an unpolarized target.
> 
> Does the bottom row then show the beam-helicity asymmetries for the
> neutron or really the E observable?
> 
> Best wishes,
> 
>        Volker Crede
> 
> 
> On Oct 17, 2013, at 10:41 AM, <daoh at andrew.cmu.edu>
> <daoh at andrew.cmu.edu> wrote:
> 
> > Dear all,
> > 
> > Could you take a look at my draft and give comments to improve my
> > presentation at the DNP next week?
> > Thank you,
> > Dao
> > Ho<Oct_DNP_meeting_2013.pdf>_______________________________________________
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> 
> 
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