title: Model-independent calculation of radiative neutron capture on lithium-7.
abstract: The radiative neutron capture on lithium-7 is calculated model independently using a low-energy halo effective field theory. The cross section is expressed in terms of scattering parameters directly related to the S-matrix elements. It depends on the poorly known p-wave effective range parameter r(1). This constitutes the largest uncertainty in traditional model calculations. It is explicitly demonstrated by comparing with potential model calculations. A single parameter fit describes the low-energy data extremely well and yields r(1)≈-1.47  fm(-1).
authors.affiliation: Department of Physics and Astronomy and High Performance Computing Collaboratory, Mississippi State University, Mississippi State, Mississippi 39762, USA. grupak@u.washington.edu
authors.forename: Gautam
authors.initials: G
authors.lastname: Rupak
authors.forename: Renato
authors.initials: R
authors.lastname: Higa