[Theory-seminars] Cake seminar Monday, Oct 7, L102, 1p.m.

[Alexey Prokudin]

Dear all,
we will have
a Cake Seminar on Monday, Oct 7,
CEBAF Center, Room L102, 1:00 p.m.

Speaker:Christian Weiss (JLab)

Title: Chiral dynamics and peripheral transverse nucleon structure
    
Abstract:
In the light-front view of nucleon structure the electromagnetic form
factors are described in terms of frame-independent transverse
densities of charge and magnetization. Recent work has studied the
transverse densities at peripheral distances b = O(1/M_pi), where they
are governed by universal chiral dynamics and can be computed using
effective field theory (EFT). We summarize the main results and their
physical interpretation. A new "mechanical" picture of peripheral
nucleon structure is presented, based on the light-front formulation
of chiral EFT. The large-N_c limit of QCD, the role of Delta intermediate
states, and the range of applicability of chiral EFT in transverse
nucleon structure are discussed. The chiral component of the transverse
densities could be probed experimentally in elastic form factor
measurements at very low Q2 (as planned at JLab 12 GeV). We also comment
on the connection with GPDs and peripheral high-energy scattering processes.
  

A complete list of upcoming theory seminars and talks from previous
seminars is available from:
http://www.jlab.org/div_dept/theory/seminars/

Alexei, Lingyun, Pedro, and Andre'
JLab Theory Seminar Organizers


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