An absolute polarimeter for high energy protons

Abstract

A study of the spin asymmetries for polarized elastic proton proton collisions in the electromagnetic hadronic interference (CNI) region of momentum transfer provides a method of self calibration of proton polarization. The method can be extended to non-identical spin half scattering so that, in principle, the polarization of a proton may be obtained through an analysis of its elastic collision with a different polarized particle, helium 3 for instance. Sufficiently large CNI spin asymmetries provide enough information to facilitate the evaluation of nearly all the helicity amplitudes at small t as well as the polarization of both initial spin half fermions. Thus it can serve equally well as a polarimeter for helium 3.

References in corpus (3)

• Prospects for Spin Physics at RHIC
• The Coulomb Phase Revisited
• Polarized Proton Nucleus Scattering

Cited by in corpus (8)

• Measurement of Collins asymmetries in inclusive production of charged pion pairs in e^+e^- annihilation at BABAR
• Measurement of the Spin Tune Using the Coherent Spin Motion of Polarized Proton in a Storage Ring
• Spin asymmetries for elastic proton scattering and the spin dependent couplings of the Pomeron
• Feasibility study for precisely measuring the EIC ${}^3$He beam polarization with the Polarized Atomic Hydrogen Gas Jet Target polarimeter at RHIC
• Polarization Measurements of $p^{\uparrow }$ and ${}^3$He${}^{\uparrow }$ Beams at RHIC and Future EIC Using the Polarized Atomic Hydrogen Gas Jet Target
• Breakup corrections to spin asymmetries in the ${}^3$He beam polarization measurements with the Polarized Atomic Hydrogen Gas Jet Target
• Impact picture for the analyzing power $A_N$ in very forward $pp$ elastic scattering
• On the possibility of measuring the polarization of a ${}^3\mathrm{He}$ beam at EIC by the HJET polarimeter