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Author  |
Song, J.; Bayar, M.; Li, Y.Y.; Oset, E. |
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Title |
Revisiting the Λc+→K0η reaction: the role of N*(1535),N* and Σ(1620) |
Type |
Journal Article |
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Year |
2025 |
Publication |
European Physical Journal C |
Abbreviated Journal |
Eur. Phys. J. C |
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Volume |
85 |
Issue |
10 |
Pages |
1114 - 14pp |
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Keywords |
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Abstract |
We perform a theoretical study of the weak decay Lambda c+-> K0 eta p using a coupled-channel chiral unitary approach that incorporates both pseudoscalar-baryon and vector-baryon interactions. Our framework includes contributions from both internal and external weak emission mechanisms, as well as strong final state interactions. We assume that the N*(1535) and N*(1650 resonances are dynamically generated through meson-baryon scattering and they appear as distinct structures in the eta p invariant mass distributions. A clear peak also appears in the K0p invariant mass distribution around 1620 MeV, associated with the dynamically generated Sigma(1620) resonance. Notably, this work provides the first theoretical description of the simultaneous observation of these two related N* resonances in the same meson-baryon final state. Our results highlight the crucial role of final state interaction and the interplay between different weak decay topologies in shaping the resonance patterns. These findings offer new insights into the nature of nucleon excitations and support the interpretation of N*(1535) and N*(1650) as dynamically generated states. Moreover, the identification of the Sigma(1620) further supports the picture of hadronic molecular structures emerging from meson-baryon interactions in the non-perturbative QCD regime. |
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Address |
[Song, Jing] Hainan Univ, Ctr Theoret Phys, Sch Phys & Optoelect Engn, Haikou 570228, Peoples R China, Email: Song-Jing@buaa.edu.cn; |
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Thesis |
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Publisher |
Springer |
Place of Publication |
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Language |
English |
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Original Title |
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Series Title |
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Series Volume |
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Edition |
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ISSN |
1434-6044 |
ISBN |
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Notes |
WOS:001590964800002 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6887 |
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