Low-energy photodisintegration of the deuteron and Big-Bang nucleosynthesis


Journal Article

The photon analyzing power for the photodisintegration of the deuteron was measured for seven gamma-ray energies between 2.39 and 4.05 MeV using the linearly polarized gamma-ray beam of the high-intensity gamma-ray source at the Duke Free-Electron Laser Laboratory. The data provide a stringent test of theoretical calculations for the inverse reaction, the neutron-proton radiative capture reaction at energies important for Big-Bang nucleosynthesis. Our data are in excellent agreement with potential model and effective field theory calculations. Therefore, the uncertainty in the baryon density Ω Bh2 obtained from Big-Bang Nucleosynthesis can be reduced at least by 20%. © 2003 Published by Elsevier B.V.

Full Text

Duke Authors

Cited Authors

  • Tornow, W; Czakon, NG; Howell, CR; Hutcheson, A; Kelley, JH; Litvinenko, VN; Mikhailov, SF; Pinayev, IV; Weisel, GJ; WitaƂa, H

Published Date

  • November 6, 2003

Published In

Volume / Issue

  • 574 / 1-2

Start / End Page

  • 8 - 13

International Standard Serial Number (ISSN)

  • 0370-2693

Digital Object Identifier (DOI)

  • 10.1016/j.physletb.2003.08.078

Citation Source

  • Scopus