| Title: |
Observation of χcJJ=012→pp¯ηη |
| Authors: |
Ablikim, M.; Achasov, M. N.; Adlarson, P.; Ai, X. C.; Aliberti, R.; Amoroso, A.; An, Q.; Kalantar-Nayestanaki, Nasser; Kavatsyuk, Myroslav; Messchendorp, Johan |
| Source: |
The BESIII collaboration, Ablikim, M, Achasov, M N, Adlarson, P, Ai, X C, Aliberti, R, Amoroso, A, An, Q, Kalantar-Nayestanaki, N, Kavatsyuk, M & Messchendorp, J 2025, 'Observation of χcJJ=012→pp¯ηη', Journal of High Energy Physics, vol. 10, 90. https://doi.org/10.1007/JHEP10(2025)090 |
| Publication Year: |
2025 |
| Collection: |
University of Groningen research database |
| Description: |
Using (2712.4 ± 14.3) × 106ψ(3686) candidates collected by the BESIII detector operating at the BEPCII storage ring, the decays χcJJ=012→pp¯ηη are observed for the first time through the radiative transition ψ(3686) → γχcJ. The statistical significances for χcJ signals are all larger than 5σ. The branching fractions of χc0,1,2→pp¯ηη are determined to be (5.75 ± 0.59 ± 0.42) × 10−5, (1.40 ± 0.33 ± 0.17) × 10−5, and (2.64 ± 0.40 ± 0.27) × 10−5, respectively, where the first uncertainties are statistical and the second systematic. No evident resonant structures are found in the pp¯ and pη/p¯η systems |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISSN: |
1126-6708 |
| Relation: |
info:eu-repo/semantics/altIdentifier/hdl/https://hdl.handle.net/11370/13db9aa4-87de-4e74-8f05-0b33d47ca3b4; info:eu-repo/semantics/altIdentifier/pissn/1126-6708 |
| DOI: |
10.1007/JHEP10(2025)090 |
| Availability: |
https://hdl.handle.net/11370/13db9aa4-87de-4e74-8f05-0b33d47ca3b4; https://research.rug.nl/en/publications/13db9aa4-87de-4e74-8f05-0b33d47ca3b4; https://doi.org/10.1007/JHEP10(2025)090; https://pure.rug.nl/ws/files/1447717447/JHEP10_2025_090_1_.pdf |
| Rights: |
info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.E5A8C0E7 |
| Database: |
BASE |