| Autor: |
Ablikim, M, Achasov, MN, Adlarson, P, Ahmed, S, Albrecht, M, Alekseev, M, Amoroso, A, An, Q, Anita, YB, Bakina, O, Ferroli, RB, Balossino, I, Ban, Y, Begzsuren, K, Bennett, JV, Berger, N, Bertani, M, Bettoni, D, Bianchi, F, Biernat, J, Bloms, J, Boyko, I, Briere, RA, Cai, H, Cai, X, Calcaterra, A, Cao, GF, Cao, N, Cetin, SA, Chai, J, Chang, JF, Chang, WL, Chelkov, G, Chen, DY, Chen, G, Chen, HS, Chen, J, Chen, ML, Chen, SJ, Chen, XR, Chen, YB, Cheng, W, Cibinetto, G, Cossio, F, Cui, XF, Dai, HL, Dai, JP, Dai, XC, Dbeyssi, A, Elbert, B, Collaboration, BESIII |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Popis: |
Using a sample of 1.31×109 J/ψ events collected with the BESIII detector, we perform a search for the rare decay η′→4π0 via J/ψ→γη′. No significant η′ signal is observed in the 4π0 invariant mass spectrum. With a Bayesian approach, the upper limit on the branching fraction is determined to be B(η′→4π0) |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
