Search for a 2-Photon Exchange in Inclusive DIS on a Transversely Polarized Hydrogen Target at HERMES
Left-right single-spin asymmetries are measured in inclusive deep inelastic scattering at HERMES, with the goal of searching for a 2-photon exchange signal in the range 0.004<x<0.9, 0.1<Q2<20 GeV2. In two separate regions, for Q2>1 GeV2 and Q2<1 GeV2, and for both electron and positron beams, the asymmetries are found to be consistent with zero showing that within the uncertainties no signal is detected.
Spin Physics: 18th International Spin Physics Symposium
- Pub Date:
- August 2009
- Total and inclusive cross sections;
- Polarization in interactions and scattering;
- Inelastic electron scattering to specific states