| Title: |
Study of the Magnetic Dipole Transition of J=ψ → γηc via ηc → pp |
| Authors: |
Ablikim, M.; Achasov, M.N.; Adlarson, P.; Ai, X.C.; Aliberti, R.; Amoroso, A.; An, Q.; Kalantar-Nayestanaki, Nasser; Kavatsyuk, Myroslav |
| Source: |
BESIII Collaboration, Ablikim, M, Achasov, M N, Adlarson, P, Ai, X C, Aliberti, R, Amoroso, A, An, Q, Kalantar-Nayestanaki, N & Kavatsyuk, M 2026, 'Study of the Magnetic Dipole Transition of J=ψ → γηc via ηc → pp', Physical Review Letters, vol. 136, no. 5, 051901 . https://doi.org/10.1103/r6yf-q6kv |
| Publication Year: |
2026 |
| Collection: |
University of Groningen research database |
| Description: |
Using (10.087±0.044)×109 / events collected with the BESIII detector at the +− BEPCII collider, we present the first amplitude analysis of / →¯ with the ¯ invariant mass in the mass region [2.70,3.05] GeV/2. The product branching fraction ℬ(/→)×ℬ(→¯) is determined to be (2.11±0.02stat±0.07syst)×10−5 with precision improved by 1 order of magnitude. Combining with the product branching fractions ℬ(→¯)×ℬ(→) and ℬ(/→)×ℬ(→), the branching fractions of ℬ(/ →) and ℬ( →) are calculated to be (2.29±0.01stat±0.04syst±0.18opbf)% and (2.28±0.01stat±0.04syst±0.18opbf)×10−4, respectively, which are consistent with the latest lattice quantum chromodynamics calculations. Here, opbf is the uncertainty from the other product branching fractions used in the calculation. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISSN: |
0031-9007; 1079-7114 |
| Relation: |
info:eu-repo/semantics/altIdentifier/hdl/https://hdl.handle.net/11370/9e6dc7e3-40e3-4319-9323-b6bedd629396; info:eu-repo/semantics/altIdentifier/pissn/0031-9007; info:eu-repo/semantics/altIdentifier/eissn/1079-7114 |
| DOI: |
10.1103/r6yf-q6kv |
| Availability: |
https://hdl.handle.net/11370/9e6dc7e3-40e3-4319-9323-b6bedd629396; https://research.rug.nl/en/publications/9e6dc7e3-40e3-4319-9323-b6bedd629396; https://doi.org/10.1103/r6yf-q6kv; https://pure.rug.nl/ws/files/1509308346/r6yf-q6kv.pdf |
| Rights: |
info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.7AAE1A60 |
| Database: |
BASE |