Radiative Neutron Capture on Lithium-7

Details Radiative Neutron Capture on Lithium-7 Radiative Neutron Capture on Lithium-7

2010-12-31

arxiv.org/abs/1101.0207v1

Phys.Rev.Lett.106:222501,2011

Physics

Nuclear Physics

Nuclear Theory

9 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.106.222501

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 element. The cross section depends on the poorly known p-wave effective range parameter r. This constitutes the leading order 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 = -1.47 fm^{-1}.

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