Conveners
Plenary 3
- Andrei Afanasev (GWU)
Mikhail Yurov
(UVA)
9/12/17, 1:25 PM
Interference Physics
Oral Contribution
Two experimental techniques, Rosenbluth separation and recoil polarization transfer, used to extract proton's electromagnetic form factors ratio $\frac{G_E}{G_M}$ yield markedly different results. Modern theoretical calculations suggest that two-photon exchange (TPE) might be responsible for the observed discrepancy and that it is $\varepsilon$ dependent. Jefferson Lab Experiment E05-017 was...
Francois-Xavier Girod
(JLab)
9/12/17, 1:50 PM
Interference Physics
Oral Contribution
The exclusive electroproduction of a hard photon off a nucleon $eN\rightarrow eN\gamma$
provides three-dimensional information on the nucleon structure.
This reaction proceeds via the Bethe-Heitler (BH) process (with the photon emitted by the electron),
and the Deeply Virtual Compton Scattering (DVCS) process (with the photon emitted by the proton).
BH and DVCS are indistinguishable, and...
Axel Schmidt
(MIT)
9/12/17, 2:15 PM
Interference Physics
Oral Contribution
The discrepancy between polarized and unpolarized measurements of the proton's electromagnetic form factors is striking, and suggests that two-photon exchange (TPE) may be playing a larger role in elastic electron-proton scattering than is estimated in standard radiative corrections formulae. While TPE is difficult to calculate in a model-independent way, it can be determined experimentally...
