Abstract
The beam-spin asymmetry, , for the reaction has been measured using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility (JLab) for six photon-energy bins, between 1.1 and 2.3 GeV, and proton angles in the center-of-mass frame, , between and . These are the first measurements of beam-spin asymmetries at for photon-beam energies above 1.6 GeV, and the first measurements for angles other than . The angular and energy dependence of is expected to aid in the development of QCD-based models to understand the mechanisms of deuteron photodisintegration in the transition region between hadronic and partonic degrees of freedom, where both effective field theories and perturbative QCD cannot make reliable predictions.
2 More- Received 9 April 2015
- Revised 19 April 2015
DOI:https://doi.org/10.1103/PhysRevC.91.055202
©2015 American Physical Society