An observation of the $f_0(1710)$ meson in the $ωϕ$ system in the Pion-$Be$ Interaction at Momentum of 29 GeV
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
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2023
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| author | Dorofeev, V. A. Eremeev, D. R. Gotman, V. G. Ivashin, A. V. Kachaev, I. A. Khokhlov, Yu. A. Kholodenko, M. S. Konstantinov, V. F. Lisin, V. I. Matveev, V. D. Nazarov, E. V. Nikolaenko, V. I. Plekhanov, A. N. Ryabchikov, D. I. Shumakov, A. A. Sugonyaev, V. P. Zaitsev, A. M. |
| author_facet | Dorofeev, V. A. Eremeev, D. R. Gotman, V. G. Ivashin, A. V. Kachaev, I. A. Khokhlov, Yu. A. Kholodenko, M. S. Konstantinov, V. F. Lisin, V. I. Matveev, V. D. Nazarov, E. V. Nikolaenko, V. I. Plekhanov, A. N. Ryabchikov, D. I. Shumakov, A. A. Sugonyaev, V. P. Zaitsev, A. M. |
| contents | The charge-exchange reaction $π^-p \rightarrow n\,ω(783)ϕ(1020)$, $ω\rightarrow π^+π^-π^0$, $ϕ\rightarrow K^+K^-$ is studied with the upgraded VES facility (U-70, Protvino) in the interaction of a 29 GeV pion beam with a beryllium target. The distribution over the invariant mass of the system $M_{ωϕ}$ shows a near-threshold signal. A partial wave analysis reveals that the scalar state ($J^{PC}=0^{++}$) dominates in this mass region.
The observed signal can be described with a contribution of the known resonance $f_0(1710)$. Using OPE approximation for the reaction $π^-p \rightarrow n\, f_0(1710)$ the product of branching fractions is found to be: $Br(f_0(1710)\rightarrow ππ)\cdot Br(f_0(1710)\rightarrow ωϕ) = (4.8 \pm 1.2) \cdot 10^{-3}$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2306_07779 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | An observation of the $f_0(1710)$ meson in the $ωϕ$ system in the Pion-$Be$ Interaction at Momentum of 29 GeV Dorofeev, V. A. Eremeev, D. R. Gotman, V. G. Ivashin, A. V. Kachaev, I. A. Khokhlov, Yu. A. Kholodenko, M. S. Konstantinov, V. F. Lisin, V. I. Matveev, V. D. Nazarov, E. V. Nikolaenko, V. I. Plekhanov, A. N. Ryabchikov, D. I. Shumakov, A. A. Sugonyaev, V. P. Zaitsev, A. M. High Energy Physics - Experiment Nuclear Experiment The charge-exchange reaction $π^-p \rightarrow n\,ω(783)ϕ(1020)$, $ω\rightarrow π^+π^-π^0$, $ϕ\rightarrow K^+K^-$ is studied with the upgraded VES facility (U-70, Protvino) in the interaction of a 29 GeV pion beam with a beryllium target. The distribution over the invariant mass of the system $M_{ωϕ}$ shows a near-threshold signal. A partial wave analysis reveals that the scalar state ($J^{PC}=0^{++}$) dominates in this mass region. The observed signal can be described with a contribution of the known resonance $f_0(1710)$. Using OPE approximation for the reaction $π^-p \rightarrow n\, f_0(1710)$ the product of branching fractions is found to be: $Br(f_0(1710)\rightarrow ππ)\cdot Br(f_0(1710)\rightarrow ωϕ) = (4.8 \pm 1.2) \cdot 10^{-3}$. |
| title | An observation of the $f_0(1710)$ meson in the $ωϕ$ system in the Pion-$Be$ Interaction at Momentum of 29 GeV |
| topic | High Energy Physics - Experiment Nuclear Experiment |
| url | https://arxiv.org/abs/2306.07779 |