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Record |
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Author  |
Lyu, W.T.; Liu, S.W.; Wu, J.J.; Li, D.M.; Wang, E. |
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Title |
Unveiling the Elusive Σ(1380) Resonance through Coupled-Channel Dynamics in Λc+ ηπ +Λ Reaction |
Type |
Journal Article |
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Year |
2026 |
Publication |
Chinese Physics Letters |
Abbreviated Journal |
Chin. Phys. Lett. |
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Volume |
43 |
Issue |
10 |
Pages |
100201 - 8pp |
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Abstract |
We investigate the Lambda c+ eta pi +Lambda decay measured by the Belle and BESIII Collaborations, focusing on the possible role of the Sigma(1380) state with spin-parity J P=1/2-. In our theoretical framework, the Lambda(1670) and a0(980) are dynamically generated from meson-baryon and meson-meson final-state interactions, respectively, and the corresponding line shapes of these two states used here are applicable to all relevant hadronic reactions. Furthermore, the contributions from the intermediate Sigma(1385) resonance and the possible Sigma(1380) state are included explicitly. By comparing the invariant mass and angular distributions obtained with and without the Sigma(1380) state, we demonstrate that this state plays an important role in improving the description of the experimental data. We also identify the kinematic regions most sensitive to the possible Sigma(1380) contribution. Future high-precision measurements of this process will be instrumental for testing the existence of the Sigma state with J P=1/2-. |
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Address |
[Lyu, Wen-Tao; Li, De-Min; Wang, En] Zhengzhou Univ, Sch Phys, Zhengzhou 450001, Peoples R China, Email: wujiajun@ucas.ac.cn; |
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Publisher |
IOP Publishing Ltd |
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Language |
English |
Summary Language |
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Original Title |
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Series Volume |
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ISSN |
0256-307x |
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Notes |
WOS:001916104900001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
7505 |
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