Normal Spin Asymmetries in Elastic Electron-Proton Scattering
Conference
·
OSTI ID:842294
We discuss the two-photon exchange contribution to observables which involve lepton helicity flip in elastic lepton-nucleon scattering. This contribution is accessed through the single spin asymmetry for a lepton beam polarized normal to the scattering plane. We estimate this beam normal spin asymmetry at large momentum transfer using a parton model and we express the corresponding amplitude in terms of generalized parton distributions. We further discuss this observable in the quasi-RCS kinematics which may be dominant at certain kinematical conditions and find it to be governed by the photon helicity-flip RCS amplitudes.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA
- Sponsoring Organization:
- USDOE Office of Energy Research (ER)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 842294
- Report Number(s):
- JLAB-THY-05-332; DOE/ER/40150-3549
- Country of Publication:
- United States
- Language:
- English
Similar Records
Beam normal spin asymmetry in elastic lepton-nucleon scattering
Transverse single spin asymmetry in elastic electron-proton scattering
Beam normal spin asymmetry in the quasireal Compton scattering approximation
Journal Article
·
Wed Mar 31 23:00:00 EST 2004
· Nuclear Physics. A
·
OSTI ID:824717
Transverse single spin asymmetry in elastic electron-proton scattering
Conference
·
Mon Jan 31 23:00:00 EST 2005
·
OSTI ID:839020
Beam normal spin asymmetry in the quasireal Compton scattering approximation
Journal Article
·
Mon May 15 00:00:00 EDT 2006
· Physical Review. C, Nuclear Physics
·
OSTI ID:20771553