I am following the tensor polarization discussion on email. I think Genya
and Vitaliy should first resolve what they see. I understand that Genya
is using elastic scattering and Vitaliy (e,e'p). Is that right?
Although I suggested reversing the transverse field, I think going
to purely longitudinal field probably will help resolve this quicker.
Richard
On Mon, 15 Mar 2004, John Calarco wrote:
>
> Genya
>
> I agree that we should follow either your suggestion to turn off the
> transverse holding field or Richard's suggestion to reverse it (I see
> them as being equivalent) as soon as is practical. Your comment that
> the elastic vector is small compared to the tensor asymmetry is correct,
> and therefore it should have a small effect. My worry is that somehow
> the data are being sorted incorrectly (some bit incorrectly set) and
> that the asymmetry is being "calculated" incorrectly from the data.
>
> John
>
>
> On Mon, 15 Mar 2004, Genya wrote:
>
> >
> >
> > Genya wrote:
> >
> > >
> > >
> > > vitaliy ziskin wrote:
> > >
> > >> Richard,
> > >> Which side gives 20%? This maybe a strange coincidence but the
> > >> tensor asymmetry for d(e,e'p)n also shows 20+/-12 % target
> > >> polarization in electron-left sector and 65 +/- 10% in electron-right
> > >> sector. To me this seems too strange of a coincidence, espacialy
> > >> considering that vector (e,e'p)n results are consistent in both
> > >> sectors. I, however, do not see how a target field can effect only
> > >> tensor asymmetry and not
> > >
> > >
> > > Actually, I see high polarization when electron goes to the right.
> > > Genya
> >
> > Soryy, I meesed this one up. In reality I see high polarization
> > with electron in LEFT sector, which confirms
> > Vitalij's observation.
> > Rickardo repeated my calculations of the "theoretical" asymmetry
> > and confirmed my results. Now matters
> > really look somewhat troubling. Perhaps we should switch to a
> > longitudinal only field to evaluate the situation.
> > And perhaps we should do it ASAP, may be tomorrow.
> > Genya
> >
> > >
> > >
> >
> >
> >
>
>
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