Study $Ξ_c^+ \to Λ{\bar{K}}^0 π^+$ and search for the low-lying baryons $Ξ(1/2^-)$ and $Σ(1/2^-)$
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866913741777403904 |
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| author | Li, Ying Lyu, Wen-Tao Wang, Guan-Ying Li, Longke Yan, Wen-Cheng Wang, En |
| author_facet | Li, Ying Lyu, Wen-Tao Wang, Guan-Ying Li, Longke Yan, Wen-Cheng Wang, En |
| contents | Since searches for the low-lying excited baryons $Ξ(1/2^-)$ and $Σ(1/2^-)$ are crucial to deepening our understanding of the light baryon spectrum, we have investigated the Cabibbo-favored process $Ξ_c^+ \to Λ{\bar{K}}^0 π^+$ by taking into account the $S$-wave pseudoscalar meson-octet baryon interactions within the chiral unitary approach, which could dynamically generate the resonances $Ξ(1/2^-)$ and $Σ(1/2^-)$. The contributions from the excited kaons are double Cabibbo-suppressed, and the contribution from the $Σ(1385)$ is also suppressed due to Korner-Pati-Woo theory, thus those states are expected to play negligible contributions in this process. We have predicted the $\bar{K}^0 Λ$ and $π^+Λ$ invariant mass distributions, which have the clear signals of the $Ξ(1/2^-)$ and $Σ(1/2^-)$. Thus, the $Ξ_c^+ \to Λ{\bar{K}}^0 π^+$ is an ideal process to search for the low-lying baryons $Ξ(1/2^-)$ and $Σ(1/2^-)$, and we make a call for a precise measurements of this process in experiments, such as Belle II, LHCb, and the proposed Super Tau-Charm Facility (STCF). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_14385 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Study $Ξ_c^+ \to Λ{\bar{K}}^0 π^+$ and search for the low-lying baryons $Ξ(1/2^-)$ and $Σ(1/2^-)$ Li, Ying Lyu, Wen-Tao Wang, Guan-Ying Li, Longke Yan, Wen-Cheng Wang, En High Energy Physics - Phenomenology Since searches for the low-lying excited baryons $Ξ(1/2^-)$ and $Σ(1/2^-)$ are crucial to deepening our understanding of the light baryon spectrum, we have investigated the Cabibbo-favored process $Ξ_c^+ \to Λ{\bar{K}}^0 π^+$ by taking into account the $S$-wave pseudoscalar meson-octet baryon interactions within the chiral unitary approach, which could dynamically generate the resonances $Ξ(1/2^-)$ and $Σ(1/2^-)$. The contributions from the excited kaons are double Cabibbo-suppressed, and the contribution from the $Σ(1385)$ is also suppressed due to Korner-Pati-Woo theory, thus those states are expected to play negligible contributions in this process. We have predicted the $\bar{K}^0 Λ$ and $π^+Λ$ invariant mass distributions, which have the clear signals of the $Ξ(1/2^-)$ and $Σ(1/2^-)$. Thus, the $Ξ_c^+ \to Λ{\bar{K}}^0 π^+$ is an ideal process to search for the low-lying baryons $Ξ(1/2^-)$ and $Σ(1/2^-)$, and we make a call for a precise measurements of this process in experiments, such as Belle II, LHCb, and the proposed Super Tau-Charm Facility (STCF). |
| title | Study $Ξ_c^+ \to Λ{\bar{K}}^0 π^+$ and search for the low-lying baryons $Ξ(1/2^-)$ and $Σ(1/2^-)$ |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2501.14385 |