| Title: |
Search for (2)→ + − ′ decay |
| 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, 'Search for (2)→ + − ′ decay', Physical Review D, vol. 111, no. 1, 012004. https://doi.org/10.1103/PhysRevD.111.012004 |
| Publication Year: |
2025 |
| Collection: |
University of Groningen research database |
| Description: |
Using (2.712±0.014)×109 (2) events collected with the BESIII detector operating at the BEPCII, we search for the (2)→+−′ decay. Its decay branching fraction is measured to be (11.11±4.67(stat)±1.82(syst)±4.24(extr))×10−4, where the first uncertainty is statistical, the second is systematic, and the third uncertainty is from the branching fraction of the (2)→(2) decay. The statistical significance is 2.8. The upper limit on the product branching fraction [(2)→(2)]×[(2)→+−′] is set to be 0.94×10−6 at 90% confidence level. In addition, the branching fractions of 1 →+−′ and 2 →+−′ are updated to be (8.48±0.10(stat)±0.47(syst))×10−4 and (1.53±0.04(stat)±0.08(syst))×10−4, respectively. The precision is improved by twofold. |
| 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/11370/101b744e-ac94-4351-bcd3-375bb89e944b; info:eu-repo/semantics/altIdentifier/pissn/1550-7998; info:eu-repo/semantics/altIdentifier/eissn/0556-2821 |
| DOI: |
10.1103/PhysRevD.111.012004 |
| Availability: |
https://hdl.handle.net/11370/101b744e-ac94-4351-bcd3-375bb89e944b; https://research.rug.nl/en/publications/101b744e-ac94-4351-bcd3-375bb89e944b; https://doi.org/10.1103/PhysRevD.111.012004; https://pure.rug.nl/ws/files/1302561631/PhysRevD.111.012004.pdf |
| Rights: |
info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.FAD82F22 |
| Database: |
BASE |