Resonance Contribution to Radiative Neutron Capture on Lithium-7

Abstract

Using halo effective field theory, we provide a model-independent calculation of the radiative neutron capture on lithium-7 over an energy range where the contribution from the 3+ resonance becomes important. One finds that a satisfactory description of the capture reaction, in the present single-particle approximation, suggests the use of a resonance width about three times larger than the experimental value. We also present power counting arguments that establish a hierarchy for electromagnetic one- and two-body currents.

28 pages, 7 figures

References in corpus (6)

• alpha-alpha Scattering in Halo Effective Field Theory
• Universal properties and structure of halo nuclei
• Electromagnetic strength of neutron and proton single-particle halo nuclei
• Radiative Neutron Capture on Lithium-7
• Coupled-channel effective field theory and proton-${}^7$Li scattering
• Narrow resonances and short-range interactions

Cited by in corpus (23)

• Nuclear effective field theory: status and perspectives
• Effective field theory description of halo nuclei
• From bound states to the continuum
• ${}^6$He nucleus in halo effective field theory
• Halo effective field theory constrains the solar Beryllium-7 + proton -> Boron-8 + photon rate
• Carbon-19 in Halo EFT: Effective-range parameters from Coulomb-dissociation experiments
• Marrying {\it ab initio} calculations and Halo-EFT: the case of ${}^7\mathrm{Li}+n\to {}^8\mathrm{Li}+\gamma$
• Radiative Neutron Capture on Carbon-14 in Effective Field Theory
• Constraining Low-Energy Proton Capture on Beryllium-7 through Charge Radius Measurements
• Adiabatic projection method for scattering and reactions on the lattice
• The 7Li(n,gamma)8Li Radiative Capture at Astrophysical Energies
• Range corrections in Proton Halo Nuclei
• Effective field theory for vibrations in odd-mass nuclei
• Three-body systems in physics of cold atoms and halo nuclei
• Charge and Matter Form Factors of Two-Neutron Halo Nuclei in Halo Effective Field Theory at Next-to-leading-order
• Coupled-channels treatment of ${}^7\mathrm{Be}(p,\gamma {)}^8\mathrm{B}$ in effective field theory
• Coupled-channel treatment of ${}^7\mathrm{Li}(n,\gamma {)}^8\mathrm{Li}$ in effective field theory
• The comparative role of 7Li(n,γ) reaction in primordial nucleosynthesis
• One- and two-neutron halos in effective field theory
• A study of the fine-structure constant dependence of radiative capture in Halo-EFT
• Halo EFT calculation of charge form factor for two-neutron ${}^6\text{He}$ halo nucleus: two-body resonant P-wave interaction
• Searching for exotic scalars at fusion reactors
• Halo EFT for ${}^{31}$Ne in a spherical formalism