Production of high-spin $ω_J/ρ_J$ ($J=2,3,4,5$) mesons in $π^{-}p$ reactions
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| Format: | Preprint |
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2026
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| _version_ | 1866917367968169984 |
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| author | Li, Ting-Yan Bai, Zi-Yue Liu, Xiang |
| author_facet | Li, Ting-Yan Bai, Zi-Yue Liu, Xiang |
| contents | In this work, we perform a comprehensive investigation of the production of high-spin $ω_J$ and $ρ_J$ mesons ($J=2,3,4,5$) in $π^- p$ reactions using an effective Lagrangian approach. By constructing the relevant $t$-channel processes and calibrating the model with a single adjustable parameter fitted to existing data, we successfully reproduce the measured total and differential cross sections for the $J=3$ states $ω_3(1670)$ and $ρ_3(1690)$. Within the same framework, we predict the production cross sections for their lower- and higher-spin partners: $ω_2(1975)$, $ρ_2(1940)$, $ω_4(2250)$, $ρ_4(2230)$, $ω_5(2350)$, and $ρ_5(2350)$. Our results show that these states exhibit measurable cross sections with characteristically forward-peaked angular distributions, underscoring their strong potential for observation in future $πp$ meson-beam experiments. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2601_17730 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Production of high-spin $ω_J/ρ_J$ ($J=2,3,4,5$) mesons in $π^{-}p$ reactions Li, Ting-Yan Bai, Zi-Yue Liu, Xiang High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory In this work, we perform a comprehensive investigation of the production of high-spin $ω_J$ and $ρ_J$ mesons ($J=2,3,4,5$) in $π^- p$ reactions using an effective Lagrangian approach. By constructing the relevant $t$-channel processes and calibrating the model with a single adjustable parameter fitted to existing data, we successfully reproduce the measured total and differential cross sections for the $J=3$ states $ω_3(1670)$ and $ρ_3(1690)$. Within the same framework, we predict the production cross sections for their lower- and higher-spin partners: $ω_2(1975)$, $ρ_2(1940)$, $ω_4(2250)$, $ρ_4(2230)$, $ω_5(2350)$, and $ρ_5(2350)$. Our results show that these states exhibit measurable cross sections with characteristically forward-peaked angular distributions, underscoring their strong potential for observation in future $πp$ meson-beam experiments. |
| title | Production of high-spin $ω_J/ρ_J$ ($J=2,3,4,5$) mesons in $π^{-}p$ reactions |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2601.17730 |