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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2508.18908 |
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| _version_ | 1866908504006066176 |
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| author | Spülbeck, David |
| author_facet | Spülbeck, David |
| contents | One of the prime goals of the COMPASS experiment at CERN is the study of the light meson spectrum, with a particular emphasis on the search for exotic states. We present the first high-statistics partial-wave decomposition of the diffractive reaction $π^-+p\to π^-π^+π^-η+p$, which spans a wide range of decay channels, such as $f_1(1285)π^-$, $a_2^-(1320)η$, $η^\primeπ^-$, and $ρ(770)a_0^-(980)$. This analysis also includes decay channels, i.e. $f_1(1285)π^-$ and $η^\primeπ^-$, predicted by theoretical models for the lightest hybrid meson and providing the opportunity to verify the hybrid meson hypothesis of the $π_1(1600)$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_18908 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Partial-wave decomposition of the diffractively produced $π^-π^+π^-η$ final state at COMPASS Spülbeck, David High Energy Physics - Experiment One of the prime goals of the COMPASS experiment at CERN is the study of the light meson spectrum, with a particular emphasis on the search for exotic states. We present the first high-statistics partial-wave decomposition of the diffractive reaction $π^-+p\to π^-π^+π^-η+p$, which spans a wide range of decay channels, such as $f_1(1285)π^-$, $a_2^-(1320)η$, $η^\primeπ^-$, and $ρ(770)a_0^-(980)$. This analysis also includes decay channels, i.e. $f_1(1285)π^-$ and $η^\primeπ^-$, predicted by theoretical models for the lightest hybrid meson and providing the opportunity to verify the hybrid meson hypothesis of the $π_1(1600)$. |
| title | Partial-wave decomposition of the diffractively produced $π^-π^+π^-η$ final state at COMPASS |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2508.18908 |