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arXiv · 1703.00519

New estimation for neutron-neutron scattering length: charge symmetry and charge independence breaking revisited

E. S. Konobeevski·S. V. Zuyev·V. I. Kukulin·V. N. Pomerantsev
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Abstract

Recent experimental results for neutron-neutron scattering length are reanalyzed from the point of view of three-nucleon force contribution. We found that the limiting value of $a_{nn}=- 15.8\pm 0.5$~fm must be free of any implicit three-body force contribution. We have also shown that the difference between the above experimental value of $a_{nn}$ and the well established value of neutron-proton scattering length $a_{np}$ can be explained by differences in the one-pion exchange potentials.

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E. S. Konobeevski, S. V. Zuyev, V. I. Kukulin, V. N. Pomerantsev. 2017-03-01. New estimation for neutron-neutron scattering length: charge symmetry and charge independence breaking revisited. https://arxiv.org/abs/1703.00519

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