$$\pi ^-p\rightarrow \eta ^{(\prime )}\, \pi ^- p$$ π - p → η ( ′ ) π - p in the double-Regge region
Abstract The production of $$\eta ^{(\prime )}\pi $$ η ( ′ ) π pairs constitutes one of the golden channels to search for hybrid exotics, with explicit gluonic degrees of freedom. Understanding the dynamics and backgrounds associated to $$\eta ^{(\prime )}\pi $$ η ( ′ ) π production above the resona...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2021-07-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-09420-1 |
| _version_ | 1819088025289752576 |
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| author | Ł. Bibrzycki C. Fernández-Ramírez V. Mathieu M. Mikhasenko M. Albaladejo A. N. Hiller Blin A. Pilloni A. P. Szczepaniak |
| author_facet | Ł. Bibrzycki C. Fernández-Ramírez V. Mathieu M. Mikhasenko M. Albaladejo A. N. Hiller Blin A. Pilloni A. P. Szczepaniak |
| author_sort | Ł. Bibrzycki |
| collection | DOAJ |
| description | Abstract The production of $$\eta ^{(\prime )}\pi $$ η ( ′ ) π pairs constitutes one of the golden channels to search for hybrid exotics, with explicit gluonic degrees of freedom. Understanding the dynamics and backgrounds associated to $$\eta ^{(\prime )}\pi $$ η ( ′ ) π production above the resonance region is required to impose additional constraints to the resonance extraction. We consider the reaction $$\pi ^-p\rightarrow \eta ^{(\prime )} \pi ^- \,p$$ π - p → η ( ′ ) π - p measured by COMPASS. We show that the data in $$2.4< m_{\eta ^{(\prime )}\pi } < 3.0{\mathrm {\,GeV}} $$ 2.4 < m η ( ′ ) π < 3.0 GeV can be described by amplitudes based on double-Regge exchanges. The angular distribution of the meson pairs, in particular in the $$\eta ' \pi $$ η ′ π channel, can be attributed to flavor singlet exchanges, suggesting the presence of a large gluon content that couples strongly to the produced mesons. |
| first_indexed | 2024-12-21T21:45:28Z |
| format | Article |
| id | doaj.art-ec27b097263c42c5aa1b96d1106c908a |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-21T21:45:28Z |
| publishDate | 2021-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-ec27b097263c42c5aa1b96d1106c908a2022-12-21T18:49:15ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-07-0181712510.1140/epjc/s10052-021-09420-1$$\pi ^-p\rightarrow \eta ^{(\prime )}\, \pi ^- p$$ π - p → η ( ′ ) π - p in the double-Regge regionŁ. Bibrzycki0C. Fernández-Ramírez1V. Mathieu2M. Mikhasenko3M. Albaladejo4A. N. Hiller Blin5A. Pilloni6A. P. Szczepaniak7Pedagogical University of KrakowInstituto de Ciencias Nucleares, Universidad Nacional Autónoma de MéxicoDepartament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos, Universitat de BarcelonaCERNTheory Center, Thomas Jefferson National Accelerator FacilityTheory Center, Thomas Jefferson National Accelerator FacilityINFN Sezione di RomaDepartment of Physics, Indiana UniversityAbstract The production of $$\eta ^{(\prime )}\pi $$ η ( ′ ) π pairs constitutes one of the golden channels to search for hybrid exotics, with explicit gluonic degrees of freedom. Understanding the dynamics and backgrounds associated to $$\eta ^{(\prime )}\pi $$ η ( ′ ) π production above the resonance region is required to impose additional constraints to the resonance extraction. We consider the reaction $$\pi ^-p\rightarrow \eta ^{(\prime )} \pi ^- \,p$$ π - p → η ( ′ ) π - p measured by COMPASS. We show that the data in $$2.4< m_{\eta ^{(\prime )}\pi } < 3.0{\mathrm {\,GeV}} $$ 2.4 < m η ( ′ ) π < 3.0 GeV can be described by amplitudes based on double-Regge exchanges. The angular distribution of the meson pairs, in particular in the $$\eta ' \pi $$ η ′ π channel, can be attributed to flavor singlet exchanges, suggesting the presence of a large gluon content that couples strongly to the produced mesons.https://doi.org/10.1140/epjc/s10052-021-09420-1 |
| spellingShingle | Ł. Bibrzycki C. Fernández-Ramírez V. Mathieu M. Mikhasenko M. Albaladejo A. N. Hiller Blin A. Pilloni A. P. Szczepaniak $$\pi ^-p\rightarrow \eta ^{(\prime )}\, \pi ^- p$$ π - p → η ( ′ ) π - p in the double-Regge region European Physical Journal C: Particles and Fields |
| title | $$\pi ^-p\rightarrow \eta ^{(\prime )}\, \pi ^- p$$ π - p → η ( ′ ) π - p in the double-Regge region |
| title_full | $$\pi ^-p\rightarrow \eta ^{(\prime )}\, \pi ^- p$$ π - p → η ( ′ ) π - p in the double-Regge region |
| title_fullStr | $$\pi ^-p\rightarrow \eta ^{(\prime )}\, \pi ^- p$$ π - p → η ( ′ ) π - p in the double-Regge region |
| title_full_unstemmed | $$\pi ^-p\rightarrow \eta ^{(\prime )}\, \pi ^- p$$ π - p → η ( ′ ) π - p in the double-Regge region |
| title_short | $$\pi ^-p\rightarrow \eta ^{(\prime )}\, \pi ^- p$$ π - p → η ( ′ ) π - p in the double-Regge region |
| title_sort | pi p rightarrow eta prime pi p π p η π p in the double regge region |
| url | https://doi.org/10.1140/epjc/s10052-021-09420-1 |
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