Low-Energy Photodisintegration of the Deuteron and Big-Bang Nucleosynthesis

Abstract

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 obtained from Big-Bang Nucleosynthesis can be reduced at least by 20%.

arXiv comment5 pages, 5 figures

References in corpus (5)

• The Deuterium Abundance Towards Q1937-1009
• The Deuterium Abundance Towards Q1009+2956
• Sharpening the predictions of big-bang nucleosynthesis
• Precision Calculation of n+p->d+gamma Cross Section for Big-Bang Nucleosynthesis
• n+p -> d+gamma for Big-Bang Nucleosynthesis

Cited by in corpus (20)

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• Effective field theory description of halo nuclei
• Frontiers in Nuclear Astrophysics
• Electron and Photon Scattering on Three-Nucleon Bound States
• Radiative neutron capture on a proton at BBN energies
• Electroweak Matrix Elements in the Two-Nucleon Sector from Lattice QCD
• Ab initio calculation of the $np\to d\gamma$ radiative capture process
• The Impact of Recent Advances in Laboratory Astrophysics on our Understanding of the Cosmos
• Gamow-Teller Unit Cross Sections for (t,3He) and (3He,t) Reactions
• Testing semi-local chiral two-nucleon interaction in selected electroweak processes
• Near-barrier Photofission in ${}^{232}$Th and ${}^{238}$U
• Parity violation in deuteron photo-disintegration
• Polarization observables in the semiexclusive photoinduced three-body breakup of 3He
• Pion-less Effective Field Theory on Low-Energy Deuteron Electro-Disintegration
• Photodisintegration of aligned deuterons at astrophysical energies using linearly polarized photons
• Few Body Reserch - Summary
• High-Precision Measurement of D($\gamma$, $n$)$p$ Photodisintegration Reaction and Implications for Big-Bang Nucleosynthesis
• Parity nonconservation in deuteron photoreactions
• Primordial deuterium abundance from calculations of $p(n,\gamma )$ and $d(p,\gamma )$ reactions within potential-model approach