Document Type
Article
Department/Program
Physics
Journal Title
Physics Letters B
Pub Date
2015
Volume
750
First Page
547
Abstract
We report new measurements of the double-polarized photodisintegration of He-3 at an incident photon energy of 16.5 MeV, carried out at the High Intensity gamma-ray Source (HI gamma S) facility located at Triangle Universities Nuclear Laboratory (TUNL). The spin-dependent double-differential cross sections and the contribution from the three-body channel to the Gerasimov-Drell-Hearn (GDH) integrand were extracted and compared with the state-of-the-art three-body calculations. The calculations, which include the Coulomb interaction and are in good agreement with the results of previous measurements at 12.8 and 14.7 MeV, deviate from the new cross section results at 16.5 MeV. The GDH integrand was found to be about one standard deviation larger than the maximum value predicted by the theories. (C) 2015 The Authors. Published by Elsevier B.V.
Recommended Citation
Laskaris, G.; Yan, X.; Mueller, J. M.; and Averett, Todd, Measurement of the doubly-polarized He-3((gamma)over-right-arrow, n)pp reaction at 16.5 MeV and its implications for the GDH sum rule (2015). Physics Letters B, 750, 547-551.
10.1016/j.physletb.2015.09.065
DOI
10.1016/j.physletb.2015.09.065
