New experimental upper limit of the electron-proton spin-flip cross-section
Abstract
In a previous publication, measurements of the depolarization of a stored proton beam by interaction with a co-propagating unpolarized electron beam at low relative energy have been presented and an upper limit of about 3 ×107 b for the electron-proton spin-flip cross-section was determined. A refined analysis presented in this paper reduces the previous upper limit by a factor of three by the introduction of a new procedure that also makes use of non-identified particles.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- September 2014
- DOI:
- 10.1016/j.nima.2014.05.058
- Bibcode:
- 2014NIMPA.759....6O