| Autor: |
Sheng-Chao Zhang, Man-Yu Duan, Wen-Tao Lyu, Guan-Ying Wang, Jing-Yu Zhu, En Wang |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
European Physical Journal C: Particles and Fields, Vol 84, Iss 12, Pp 1-8 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1434-6052 |
| DOI: |
10.1140/epjc/s10052-024-13616-6 |
| Popis: |
Abstract Recently, the Belle and LHCb Collaborations have measured the $$\Lambda ^+_c \rightarrow p K^- \pi ^+$$ Λ c + → p K - π + decay and reported the $$K^- p$$ K - p invariant mass distribution, which shows a clear cusp structure around the $$\eta \Lambda $$ η Λ threshold. In this work, we have analyzed this process by considering the triangle mechanism and the S-wave pseudoscalar meson-octet baryon interactions within the chiral unitary approach, which dynamically generates the $$\Lambda (1670)$$ Λ ( 1670 ) . Our results are in good agreement with the Belle measurements, which implies that the cusp structure around $$\eta \Lambda $$ η Λ threshold could be associated with the $$\Lambda (1670)$$ Λ ( 1670 ) with the molecular nature. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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