title: Elastic compton scattering from the deuteron and nucleon polarizabilities
abstract: Cross sections for elastic Compton scattering from the deuteron were measured over the laboratory angles straight theta(gamma) = 35 degrees -150 degrees. Tagged photons in the laboratory energy range E(gamma) = 84-105 MeV were scattered from liquid deuterium and detected in the large-volume Boston University NaI spectrometer. Using the calculations of Levchuk and L'vov, along with the measured differential cross sections, the isospin-averaged nucleon polarizabilities in the deuteron were estimated. A best-fit value of (alpha;-beta;) = 2.6+/-1.8 was determined, constrained by dispersion sum rules. This is markedly different from the accepted value for the proton of (alpha;-beta;)(p) = 10.0+/-1.5+/-0.9.
authors.affiliation: Saskatchewan Accelerator Laboratory, University of Saskatchewan, Saskatoon, Saskatchewan, Canada, S7N 5C6.
authors.initials: DL
authors.lastname: Hornidge
authors.initials: BJ
authors.lastname: Warkentin
authors.initials: R
authors.lastname: Igarashi
authors.initials: JC
authors.lastname: Bergstrom
authors.initials: EL
authors.lastname: Hallin
authors.initials: NR
authors.lastname: Kolb
authors.initials: RE
authors.lastname: Pywell
authors.initials: DM
authors.lastname: Skopik
authors.initials: JM
authors.lastname: Vogt
authors.initials: G
authors.lastname: Feldman