A polarization relation and the measurement of the longitudinal response in pseudoscalar meson electroproduction off the nucleon

Abstract

For pseudoscalar meson electroproduction off the nucleon in parallel kinematics a relation between three polarization observables is derived. It is shown that, without Rosenbluth separation, a measurement of the longitudinal strength can be achieved through three different ways. They are discussed with preliminary MAMI data for the p(\vec e, e'\vec p)π^0 reaction in the energy range of the Delta(1232) resonance.

3 pages LATEX including 1 postscript figure, corrected typos

References in corpus (5)

• The ratio of proton's electric to magnetic form factors measured by polarization transfer
• The Charge Form Factor of the Neutron from the Reaction \pol{2H}(\pol{e},e'n)p
• A measurement of the axial form factor of the nucleon by the p(e,e'pi+)n reaction at W=1125 MeV
• Measuring longitudinal amplitudes for electroproduction of pseudoscalar mesons using recoil polarization in parallel kinematics
• Double polarization experiments at intermediate energy

Cited by in corpus (5)

• Measurement of the recoil polarization in the p (\vec e, e' \vec p) pi^0 reaction at the Δ(1232) resonance
• Measurement of the beam-helicity asymmetry in the p(e_pol,e'p)pi_0 reaction at the energy of the Delta(1232) resonance
• Measurement of the Transverse-Longitudinal Cross Sections in the p (e,e'p)pi0 Reaction in the Delta Region
• Recoil Polarization Measurements for Neutral Pion Electroproduction at Q^2=1 (GeV/c)^2 Near the Delta Resonance
• Ratio of ${\sigma }_L/{\sigma }_T$ for $p(e,e^{\prime }{K}^{+})\Lambda$ Extracted from Polarization Transfer