Polarization effects in non-relativistic $ep$ scattering

Details Polarization effects in non-relativistic $ep$ scattering Polarization effects in non-relativistic $ep$ scattering

2008-02-26

arxiv.org/abs/0802.3766v2

Nucl.Instrum.Meth.B266:3453-3457,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages; version accepted for publication in Nucl.Instr.Methods B where cross sections without averaging over directions of re

Scientific paper

10.1016/j.nimb.2008.04.010

The cross section which addresses the spin-flip transitions of a proton (antiproton) interacting with a polarized non-relativistic electron or positron is calculated analytically. In the case of attraction, this cross section is greatly enhanced for sufficiently small relative velocities as compared to the result obtained in the Born approximation. However, it is still very small, so that the beam polarization time turns out to be enormously large for the parameters of $e^{\pm}$ beams available now. This practically rules out a use of such beams to polarize stored antiprotons or protons.

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