Related Experiment Video
Updated: Aug 10, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Polarization measurements in high-energy deuteron photodisintegration
K Wijesooriya1, A Afanasev, M Amarian
1Université Blaise Pascal/IN2P, Aubière, France.
Abstract:
We present measurements of the recoil proton polarization for the d(gamma-->,p-->)n reaction at straight theta(c.m.) = 90 degrees for photon energies up to 2.4 GeV. These are the first data in this reaction for polarization transfer with circularly polarized photons. The induced polarization p(y) vanishes above 1 GeV, contrary to meson-baryon model expectations, in which resonances lead to large polarizations. However, the polarization transfer Cx does not vanish above 1 GeV, inconsistent with hadron helicity conservation. Thus, we show that the scaling behavior observed in the d(gamma,p)n cross sections is not a result of perturbative QCD. These data should provide important tests of new nonperturbative calculations in the intermediate energy regime.
More Related Videos
Related Concept Videos
¹H NMR of Labile Protons: Deuterium (²H) Substitution
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
Electric Dipoles and Dipole Moment
Theoretically, studying electric dipoles leads to understanding why the resultant electric forces around us are weak. Since electric forces are strong, remnant net charges are rare. Hence, the interaction between dipoles helps us understand electrical interactions in...
Dielectric Polarization in a Capacitor
Potential Due to a Polarized Object
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

