[G8b_run] Fwd: abstract for IX LASNPA

[Patrick Collins]

Hello,

Are you actually showing Sigmas for Egamma from 1.1 to 2.1 GeV? The way this is worded seems like you will be presenting data from the entire range.

The question of t-channel exchange for the omega isn't a question of pseudoscalar vs scalar but of pseudoscalar vs Pomeron, and analysis of 
differential cross-sections says that pion exchange is dominate below 2 GeV.

Being isospin 1/2 makes it useful in understanding the N* spectrum, but saying it makes for cleaner data samples doesn't make sense.

How are you going to decompose Sigma, which is a measure of the asymmetry of the phi distribution of the meson, to get SDMEs, which are a 
function of the decay pions?

-Patrick






On 7/1/2011 1:47 PM, Philip L. Cole wrote:
>
> -
> Hi all,
>
> Please find attached Danny's abstract for the IX Latin American Symposium
> for Nuclear Physics and Applications.  Danny was have some trouble mailing
> this to the group.  We would ask for your input before it gets circulated
> to the HS PWG.
>
> Thanks,
> Phil
>
> ---------- Forwarded message ----------
> From:<martdann at jlab.org>
> Date: Fri, Jul 1, 2011 at 8:20 AM
> Subject: Re: abstract for IX LASNPA
> To: colephil at isu.edu
> Cc: emuneva at jlab.org
>
>
>   Hi all,
>
>   I will be presenting very preliminary results for the photon beam
>   asymmetry for the g8b data at the July IX Latin American Symposium on
>   Nuclear Physics and Applications.
>
>   I appreciate any comments.
>
>   Danny Martinez
>   ISU
>
>
>
>
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