[Clas_hadron] DNP abstract

[Igor Strakovsky]

Volker,

The cross section of the Omega photoproduction is still unknown.  We are
looking for the Omega events
if CLAS12 statistics and resolution will allow to do that.  Then all
depends what we will have a chance to
see - events, total, or differential cross sections. Specifically that
theory predictions for the total cross
sections vary in the range of 500. The dynamics is unknown - no strange
quarks at the initial state while
finale state has three strange quarks.

Cheers, igor

On Tue, Jun 25, 2019 at 11:51 PM burkert <burkert at jlab.org> wrote:

> In my opinion, this abstract on the Omega- is quite premature. It talks
> about "we will analyze".  What is the point of submitting an abstract
> before even a hint of Omega- events is seen in the data? At least I
> haven't seen any of it. It is bad practice to submit abstracts based on
> unsubstantiated projections that later have to be withdrawn or results
> in a no show. We have to show data that have clear impact.
>
> Volker
>
>
>    On 6/25/19 9:23 PM, Isabella Illari wrote:
> > Hi Everyone,
> >
> > Due to some discussion/conversation with Justin, Volker and Igor this
> > is the updated abstract for the upcoming DNP meeting, appended to the
> > bottom. Comments and suggestions are welcome.
> >
> > All the best,
> >
> > Izzy
> >
> > Photoproduction of the Omega- in JLab's Hall B CLAS12
> > Isabella Illari1, Olga Cortes Becerra1, William Phelps1
> > 1Physics Department, The George Washington University, Washington,
> > D.C. 20052
> >
> > The photoproduction of the very strange hyperon, the Omega-,
> > cross-section is unknown. The dynamics of the Omega photoproduction is
> > unclear – there are no strange quarks in the initial case while three
> > quarks are in the final state. There are theoretical predictions for
> > the Omega- hyperon photo- and electroproduction that varies from 1 to
> > 300 pb, but there is only an upper limit of the cross section (σt < 17
> > nb at 20 GeV) reported by SLAC. In order to measure the cross section
> > for γp → Ω−K+K+K0 and to study the reaction mechanism for the Ω− in
> > photoproduction we will analyze data from two of the experimental
> > halls at Thomas Jefferson National Accelerator Facility. The CLAS12
> > physics program studies baryon spectroscopy with quasi-real
> > photoproduction in a large variety of final states, and Run Group A
> > experiments require an 11 GeV beam and a liquid hydrogen target. Thus,
> > we are aiming to develop a better understanding of the mechanism of
> > "Very Strange" hyperon photoproduction, and to obtain accurate
> > measurements of a cross section like the Omega- using data from CLAS12.
> >
> > This work was performed with support from US DOE DE-SC001658, The
> > George Washington University, and Thomas Jefferson National
> > Accelerator Facility.
> >
>
>
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