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Author  |
Lyu, W.T.; Oset, E.; Li, D.M.; Wang, E. |
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Title |
Identifying Σ(1380) and Σ(1430) in the J/ψ→ΛπΣ¯ reaction |
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Journal Article |
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Year |
2026 |
Publication |
European Physical Journal C |
Abbreviated Journal |
Eur. Phys. J. C |
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Volume |
86 |
Issue |
10 |
Pages |
1235 - 11pp |
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Abstract |
We study the J/psi ->Lambda pi Sigma & strns; reaction by looking at the pi+Lambda mass distribution at low energies, in search of signals for the low lying Sigma & lowast; excited states. Apart from a clear signal of the Sigma(1385)(3/2+) state, we find a smaller peak for the predicted Sigma(1430)(1/2-) , which has already been confirmed by the Belle Collaboration. A first analysis, considering only the pi Lambda interaction, shows that the low energy part of the spectrum is better reproduced including contributions from the Sigma(1430) and the predicted Sigma(1380)(1/2-) state that has been claimed before from analyses of different experiments. However, when we consider the pi Sigma & strns; interaction the need for the Sigma(1380) disappears. |
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Address |
[Lyu, Wen-Tao; Li, De-Min; Wang, En] Zhengzhou Univ, Sch Phys, Zhengzhou 450001, Peoples R China, Email: lvwentao9712@163.com; |
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Publisher |
Springer |
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Language |
English |
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Original Title |
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Series Volume |
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Edition |
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ISSN |
1434-6044 |
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Notes |
WOS:001917339100004 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
7514 |
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