[Cuga] N* at high Q^2 Workshop @ JLAB May 16th 2011-A message from Viktor Mokeev

[Lorelei Carlson]

Dear Colleagues,

A "Nucleon Resonance Structure in Exclusive Electroproduction at High 
Photon  Virtualities with the CLAS12 Detector" workshop will be held at 
Jefferson Lab on May 16, 2011, the Monday just before the international 
biannual NSTAR Workshop at Jefferson Lab. The workshop will provide 
opportunities to present and discuss future developments and preliminary 
results on the exploration of hadronic physics to continuously smaller 
distances.

This workshop will hence focus on the extension of the exclusive
gamma_{v}NN* electrocoupling studies to high photon virtualities from 5.0
GeV^2 to 12.0 GeV^2 . This is the kinematic area, where the N* structure is
still almost unexplored, and which will be comprehensively covered for the
first time by the approved experiment PR12-09-003 on N* studies in exclusive
meson electroproduction off protons with the CLAS12 detector. This
experiment will be carried out in the first five years after completion of
the JLab 12 GeV Upgrade Project. By that time ready-to-use
methods are needed for the extraction of the gamma_{v}NN* electrocouplings
at high photon virtualities as well as general QCD-based frameworks for the
theoretical interpretation of these fundamental N* parameters.

Resonance electrocouplings will be measured for the first time at distance 
scales, where quark degrees of freedom  play a major role. These studies will 
provide novel information on the non-perturbative dressing of quarks and the 
long-range forces leading to baryon formation in QCD.

The special scope of this workshop is to develop future strategies, methods,
and approaches to extract and interpret hadronic physics in this
non-perturbative regime, and it aims to foster already initiated efforts as
well as to  create opportunities to facilitate and stimulate further growth
in this field.

Program topics will include:

1) Mechanism of N* production at high Q2
2) Non-perturbative QCD approaches to N* structure:
   Light-cone sum rules, Lattice, Schwinger-Dyson, AdS/QCD
3) Phenomenological quark models of N* structure
4) Quark-based reaction models for exclusive Npi and Npipi
   electroproduction in the resonance region at 5GeV^2 <Q^2 <12 GeV^2

If you are interested in our Workshop, you may find the full program and all
details on our web-site:

http://conferences.jlab.org/electroproduction/index.html

Please don't forget to REGISTER through the "Registration" link on this
web-site.

We are planning to prepare a White Paper as the Workshop outcome. There is 
no fee for our Workshop.

All questions/requests in regards of the Workshop should be send to:

nstarhighq2_loc at jlab.org

Looking forward to see you at Jefferson Lab in May 2011,

Your Local Organizing Committee:

R.W.Gothe co-chair
V.I.Mokeev co-chair
V.D.Burkert
T-S.H.Lee
Ch.Weiss