| Title: |
Study of the decay (3686)→Σ 0 ¯Σ 0 |
| Authors: |
Ablikim, M.; Achasov, M.N.; Adlarson, P.; Afedulidis, O.; Ai, X. C.; Aliberti, R.; Amoroso, A.; Kalantar-Nayestanaki, Nasser; Kavatsyuk, Myroslav; Messchendorp, Johan |
| Source: |
BESIII Collaboration, Ablikim, M, Achasov, M N, Adlarson, P, Afedulidis, O, Ai, X C, Aliberti, R, Amoroso, A, Kalantar-Nayestanaki, N, Kavatsyuk, M & Messchendorp, J 2025, 'Study of the decay (3686)→Σ 0 ¯Σ 0 ', Physical Review D, vol. 111, no. 5, 052012. https://doi.org/10.1103/PhysRevD.111.052012 |
| Publication Year: |
2025 |
| Collection: |
University of Groningen research database |
| Description: |
Using (27.12±0.14)×108 (3686) events collected with the BESIII detector operating at the BEPCII collider, we have observed the decay (3686)→Σ0¯Σ0 for the first time with a statistical significance of 7.6. Its branching fraction is measured to be (2.64±0.32stat±0.12sys)×10−6, where the first uncertainty is statistical and the second is systematic. The result is consistent with the previous measurement of its isospin partner process (3686) →Σ+¯Σ−, aligning with the naive expectation of isospin symmetry. In addition, we search for potential intermediate states in the Σ0 (¯Σ0) invariant mass distribution and a possible threshold enhancement in the Σ0¯Σ0 system, but no conclusive evidence of them is observed. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISSN: |
1550-7998; 0556-2821 |
| Relation: |
info:eu-repo/semantics/altIdentifier/hdl/https://hdl.handle.net/11370/de1fa932-1a35-48aa-a377-eb5e4105b7c8; info:eu-repo/semantics/altIdentifier/pissn/1550-7998; info:eu-repo/semantics/altIdentifier/eissn/0556-2821 |
| DOI: |
10.1103/PhysRevD.111.052012 |
| Availability: |
https://hdl.handle.net/11370/de1fa932-1a35-48aa-a377-eb5e4105b7c8; https://research.rug.nl/en/publications/de1fa932-1a35-48aa-a377-eb5e4105b7c8; https://doi.org/10.1103/PhysRevD.111.052012; https://pure.rug.nl/ws/files/1346457260/PhysRevD.111.052012.pdf |
| Rights: |
info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.F3DDFEE8 |
| Database: |
BASE |