[Frost] Updated my analysis page

[Eugene Pasyuk]

My be it it is not so surprising after all. May be it has to do with the 
helicity conservation and vector dominance. For the circularly polarized 
photon its spin is parallel or antiprallel to its momentum. Omega has 
spin 1 and VDM tells us that omega and photon is the same thing and what 
we see is helicity transfer from the photon to omega.

-Eugene



On 6/10/11 16:11 , Patrick Collins wrote:
> Hello all,
> To demonstrate what I was talking about yesterday about t-channel in 
> omega I've added a couple of plots of beam asymmetry for omega from 
> g8b with similar W values at the bottom of my page. You can see that 
> the forward angles are close to zero asymmetry. I took a look at 
> Williams PWA and he does say that there are two strong resonances in 
> omega production near threshold the F_15 (1680) and D_13 (1700), so 
> these could be producing the large helicity asymmtries. I just don't 
> understand why they would be so strong here and so weak in beam 
> asymmetry, especially in the forward direction which normally where 
> t-channel is very strong.
>
> http://clasweb.jlab.org/rungroups/g9/wiki/index.php/Patrick%27s_analysis_page#Examples_of_.CE.A3_from_g8b_for_similar_W
>
> Cheers,
> Patrick
>
>
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