[Eg6_analysis] eg6 meeting today

[Frank C]

Dear Raphael,

Appreciate the feedback! There are slightly fewer events accepted with the
confidence level cut (CLC) used in kin. fitting, even with a modest one
that I chose of 5%. The background that leaks in with the cut can be
quickly approximated but I had not done any systematic studies on the case.
But note that I did not include systematics of Mohammad's coherent DVCS
asymmetries.

I can take a more conservative cut (of say 20%) where it looks like there
is no background to worry about to minimize the systematics but at the cost
of statistics. I guess I would have to find the sweet spot for the CLC.

The plan to publish is to get the analysis note of the coherent DVMP of pi0
out (and later append on the incoherent) which has a result agreeing with a
recent general theoretical formulation of pseudoscalar meson
electroproduction off scalar targets (C. R. Ji
<https://urldefense.proofpoint.com/v2/url?u=https-3A__arxiv.org_abs_1806.01379&d=DwIFaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=7ygu1xq9zD-mBaUfSRxYW23OcbTAWpeMXq_yLvMn8zc&m=7-RYWFhLWLizFbjDzFYDaAK2maftkg94nhVxo-L9uYM&s=2ccIDE0fFOirkMQFpwkUHx3m__mCbCOODHHu3VjZJK4&e= >, June 2018) and come up with a draft.

I have some incoherent results but it is not very strong. I have been
working on extending the kin. fit to account for the initial fermi motion
but have come up empty so far.

Thanks,
Frank

On Fri, Nov 2, 2018 at 5:14 PM R D <raphael.dupre at gmail.com> wrote:

> Frank,
>
> This is a very nice work all together Frank, it would be nice to
> quantify how error bars are modified for DVCS. Results are indeed
> consistent, but do we have better error bars? This seems to be the
> case for some points, but it would be better to have a general
> statement on the topic.
>
> On a side note, do you, or any one else, know what is the publication
> plan for this study? Since I did not attend the meetings for a while I
> am not completely up to date on this.
>
> Best,
> On Fri, Nov 2, 2018 at 10:59 PM Frank C <franktcao at gmail.com> wrote:
> >
> > Dear all,
> >
> > Maybe not the best time to submit a CLAS note on a Friday after 5pm but
> attached is the CLAS note on kinematic fitting on EG6. It has the kin. fit
> formalism, how it's applied to DVCS and DVMP, and how it compares to
> exclusivity cuts for event selection. I would like to submit to a committee
> and see where it goes from there.
> >
> > I am reworking on the analysis note which will have more of the physics
> of the coherent and incoherent DVMP of the pi0. I would like to have the
> CLAS note to refer to for kin. fitting formalism and examples.
> >
> > If you prefer, here's a link to it online:
> >
> > https://userweb.jlab.org/~fcao/papers/cao_CLASNote_kfit_v001.pdf
> >
> >
> > Please let me know what you think and/or where and who I should send it
> to.
> >
> > Thanks,
> > Frank
> >
> > On Thu, Nov 1, 2018 at 9:17 AM Nathan Baltzell <baltzell at jlab.org>
> wrote:
> >>
> >> Hi All,
> >>
> >> Let’s meet today, 1:30 in B101.  Here’s the links:
> >>
> >>
> https://clasweb.jlab.org/rungroups/lowq/wiki/index.php/Meeting_on_November_1,_2018_@_1:30PM
> >>
> >>
> https://urldefense.proofpoint.com/v2/url?u=https-3A__bluejeans.com_151158041&d=DwIFaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=7ygu1xq9zD-mBaUfSRxYW23OcbTAWpeMXq_yLvMn8zc&m=q99izLUMHIaq60DF8yNRlqJIwcM0G05JoZlMCsJLhB0&s=W1zsbjYXNXuVcQlX52nplxXmqCaFj5bNRL18uajool4&e=
> >>
> >> -Nathan
> >> _______________________________________________
> >> Eg6_analysis mailing list
> >> Eg6_analysis at jlab.org
> >> https://mailman.jlab.org/mailman/listinfo/eg6_analysis
> >
> > _______________________________________________
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>
>
>
> --
> Raphaël Dupré
>
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