Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1851088 | Physics Letters B | 2014 | 6 Pages |
Abstract
We investigate the sensitivity of the three-nucleon system to changes in the neutron-neutron scattering length to next-to-leading order in the pionless effective field theory, focusing on the triton-3He binding energy difference and neutron-deuteron elastic scattering. Due to the appearance of a proton-deuteron three-body counterterm at this order, the triton-3He binding energy difference remains consistent with the experimental value even for large positive neutron-neutron scattering lengths while the elastic neutron-deuteron scattering phase shifts are insensitive. We conclude that a bound dineutron cannot be excluded to next-to-leading order in pionless EFT.
Related Topics
Physical Sciences and Engineering
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Nuclear and High Energy Physics
Authors
H.-W. Hammer, Sebastian König,