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Chirally motivated separable potential model for $\eta N$ amplitudes

A. Cieplý
(
- Rez, Nucl. Phys. Inst.
)
,
J. Smejkal
(
- IEAP CTU, Prague
)

Aug 20, 2013

21 pages

Published in:

Nucl.Phys.A 919 (2013) 46-66

Published: 2013

e-Print:

1308.4300 [hep-ph]

DOI:

10.1016/j.nuclphysa.2013.10.003

View in:

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Abstract: (Elsevier)

We analyze the ηN interaction using a coupled channel separable potential model that implements the chiral symmetry. The model predicts an ηN scattering length ℜaηN≈0.7 fm and in-medium subthreshold attraction most likely sufficient to generate η -nuclear bound states. The energy dependence of the ηN amplitude and pole content of the model are discussed. An idea of the same origin of the baryon resonances N⋆(1535) and N⋆(1650) is presented.

Note:

32 pages, 8 figures, a slightly extended (two paragraphs added) version that matches the paper accepted for publication in Nuclear Physics A

Chiral model
Eta–nucleon amplitude
Baryon resonances
Eta-nucleon amplitude
symmetry: chiral
separable potential
potential model
energy dependence
coupled channel
bound state

References(53)

Figures(9)

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