Explore the properties of $Λ(1670)$ in the Cabibbo-favored process $Λ^+_c \to p K^- π^+$ decay
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913624177508352 |
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| author | Zhang, Sheng-Chao Duan, Man-Yu Lyu, Wen-Tao Wang, Guan-Ying Zhu, Jing-Yu Wang, En |
| author_facet | Zhang, Sheng-Chao Duan, Man-Yu Lyu, Wen-Tao Wang, Guan-Ying Zhu, Jing-Yu Wang, En |
| contents | Recently, the Belle and LHCb Collaborations have measured the $Λ^+_c \to p K^- π^+$ decay and reported the $p K^-$ invariant mass distribution, which shows a clear cusp structure around the $ηΛ$ 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 generate the $Λ(1670)$. Our results are in good agreement with the Belle measurements, which implies that the cusp structure around $ηΛ$ threshold could be associated with the $Λ(1670)$ with the molecular nature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_14235 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Explore the properties of $Λ(1670)$ in the Cabibbo-favored process $Λ^+_c \to p K^- π^+$ decay Zhang, Sheng-Chao Duan, Man-Yu Lyu, Wen-Tao Wang, Guan-Ying Zhu, Jing-Yu Wang, En High Energy Physics - Phenomenology Recently, the Belle and LHCb Collaborations have measured the $Λ^+_c \to p K^- π^+$ decay and reported the $p K^-$ invariant mass distribution, which shows a clear cusp structure around the $ηΛ$ 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 generate the $Λ(1670)$. Our results are in good agreement with the Belle measurements, which implies that the cusp structure around $ηΛ$ threshold could be associated with the $Λ(1670)$ with the molecular nature. |
| title | Explore the properties of $Λ(1670)$ in the Cabibbo-favored process $Λ^+_c \to p K^- π^+$ decay |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2405.14235 |