The $D_{s1}(2460) \to D_s π^+ π^- $ decay from a $D_{s1}$ molecular perspective
Fuente:
arXiv
Salvato in:
| Autori principali: | , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866915172607590400 |
|---|---|
| author | Roca, L. Dias, J. M. Oset, E. |
| author_facet | Roca, L. Dias, J. M. Oset, E. |
| contents | We conduct a theoretical study of the $ D_{s1}(2460) \to D_s π^+ π^- $ decay from the perspective that the $D_{s1}$ is a molecular state, built mostly from the $D^* K$ and $D_s^* η$ components. The $D^*$ and $D_s^*$ mesons are allowed to decay into two pseudoscalars, with one of them merging with the other pseudoscalar that forms the $D_{s1}$ state, ultimately leading to the $π^+ π^- D_s$ final state. This results in a triangle diagram mechanism where all theoretical ingredients are well-known, leading to a free parameter framework. We evaluate the mass distributions of particle pairs and find good agreement with the experimental distributions of a recent LHCb experiment, providing strong support to the molecular picture of the $D_{s1}(2460)$ state. We also discuss the role played by the scalar mesons $f_0(500)$ and $f_0(980)$, at odds with the interpretation of the experimental analysis. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_18401 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The $D_{s1}(2460) \to D_s π^+ π^- $ decay from a $D_{s1}$ molecular perspective Roca, L. Dias, J. M. Oset, E. High Energy Physics - Phenomenology We conduct a theoretical study of the $ D_{s1}(2460) \to D_s π^+ π^- $ decay from the perspective that the $D_{s1}$ is a molecular state, built mostly from the $D^* K$ and $D_s^* η$ components. The $D^*$ and $D_s^*$ mesons are allowed to decay into two pseudoscalars, with one of them merging with the other pseudoscalar that forms the $D_{s1}$ state, ultimately leading to the $π^+ π^- D_s$ final state. This results in a triangle diagram mechanism where all theoretical ingredients are well-known, leading to a free parameter framework. We evaluate the mass distributions of particle pairs and find good agreement with the experimental distributions of a recent LHCb experiment, providing strong support to the molecular picture of the $D_{s1}(2460)$ state. We also discuss the role played by the scalar mesons $f_0(500)$ and $f_0(980)$, at odds with the interpretation of the experimental analysis. |
| title | The $D_{s1}(2460) \to D_s π^+ π^- $ decay from a $D_{s1}$ molecular perspective |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2502.18401 |