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Electric properties of the Beryllium-11 system in Halo EFT
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We compute E1 transitions and electric radii in the Beryllium-11 nucleus using an effective field theory that exploits the separation of scales in this halo system. We fix the leading-order parameters of the EFT from measured data on the 1/2+ and 1/2- levels in Be-11 and the B(E1) strength for the transition between them. We then obtain predictions for the B(E1) strength for Coulomb dissociation of the Be-11 nucleus to the continuum. We also compute the charge radii of the 1/2+ and 1/2- states. Agreement with experiment within the expected accuracy of a leading-order computation in this EFT is obtained. We also discuss how next-to-leading-order (NLO) corrections involving both s-wave and p-wave neutron-Be-10 interactions affect our results, and display the NLO predictions for quantities which are free of additional short-distance operators at this order. Information on neutron-Be-10 scattering in the relevant channels is inferred.
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Cited by 1 Pith paper
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Renormalizing Two-Neutron Halo Nuclei Without Neutron-Core Interaction
The Hongo-Son two-neutron halo EFT needs an extra renormalization condition—one input radius or scattering amplitude—before charge and matter radii can be predicted separately, and the resulting coupling has a Landau pole.
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