1. Open Access Kent State
  2. Polarization Measurements in High-Energy Deuteron Photodisintegration
Author(s)
Abstract

We present measurements of the recoil proton polarization for the d(γ⃗,p⃗)n reaction at θc.m. = 90° 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 py 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(γ,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.
Format
Article
Identifier(s)
10.1103/PhysRevLett.86.2975
Publication Date
2001-04-02
Publication Title
Physical Review Letters
Volume
86
Issue
14
First Page
2975
Last Page
2979
Keywords
Subject
Rights
http://rightsstatements.org/vocab/InC/1.0/
Community
Department of Biological Sciences
Comments

Copyright 2001 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevLett.86.2975.
Permalink https://oaks.kent.edu/bscipubs/1
Wijesooriya, K., & Kooijman, E. (2001). Polarization Measurements in High-Energy Deuteron Photodisintegration (1–). Physical Review Letters. https://doi.org/10.1103/PhysRevLett.86.2975
Wijesooriya, K., and Edgar Kooijman. 2001. “Polarization Measurements in High-Energy Deuteron Photodisintegration”. Physical Review Letters. https://doi.org/10.1103/PhysRevLett.86.2975.
Wijesooriya, K., and Edgar Kooijman. Polarization Measurements in High-Energy Deuteron Photodisintegration. Physical Review Letters, 2 Apr. 2001, https://doi.org/10.1103/PhysRevLett.86.2975.