[clas_members] PAC43 results

[burkert]

Dear all,

  The PAC43 completed their work and here are the main results:

  => There were 8 proposals presented, none of them were outright approved.
         The DVCS on polarized neutrons has a very strong physics case, 
but had
         some unresolved questions related to the parallel running and 
the new beam
         time. It was approved conditionally with condition C2, i.e. it 
should go back to
         the PAC next time with an undated proposal, possibly split into 
one run group
         proposal for the 63 days and one new proposal that also has 
additional other
         physics components included. One unaddressed issue was the 
contribution from
         charge exchange reaction, where the initial coupling is to the 
proton, and the proton
         knocks out the neutron. Since dvcs on proton is much larger, 
this contribution
         maybe significant.

  => The EMC/SRC on deuterium was a run group proposal and endorsed as 
such. There
         were a couple of questions, one was on the validity of the 
factorization in the
         cross section ratio formula.

=>  Letter of Intent "Search for Hybrid baryons".  It was endorsed to 
and encouraged to
        develop full proposal. Due to the use of different beam 
energies, they want to see tha
        split into one part as a run group proposal with run group A for 
the 11 GeV, and
        a separate proposal for the lower energies, joint with other 
proposals that also make
        use of the lower energies.

I attach the table with all results of all the proposals. Comments on 
the run group proposals
  and on the LOIs will be send out by the PAC in the near future, but 
they should not change
the main conclusions.

All in all a pretty good result considering the none of the proposals 
was fully approved.

Have a good weekend,
Volker



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