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Quantum field theoretic model of metastable resonant spin-singlet state of the np pair

A. N. Ivanov·M. Cargnelli·M. Faber·H. Fuhrmann·V. A. Ivanova·J. Marton·N. I. Troitskaya·J. Zmeskal
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Abstract

The np pair in the spin-singlet state is treated as a Cooper np-pair within the extension of the Nambu-Jona-Lasinio model of light nuclei, describing the deuteron as a Cooper np-pair in the spin-triplet state. For the Cooper np-pair in the spin-singlet state we compute the binding energy and express the S-wave scattering length of np scattering in the spin-singlet state in terms of the binding energy. The theoretical value of the S-wave scattering length of np scattering agrees well with the experimental data.

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A. N. Ivanov, M. Cargnelli, M. Faber, H. Fuhrmann, V. A. Ivanova, J. Marton, N. I. Troitskaya, J. Zmeskal. 2004-07-22. Quantum field theoretic model of metastable resonant spin-singlet state of the np pair. https://arxiv.org/abs/nucl-th/0407079

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