Measurement of the branching fraction for psi(3686) -> omega K+K-
- Ablikim, M.
- Achasov, N.
- Ai, X. C.
- Albayrak, O.
- Albrecht, M.
- Ambrose, D. J.
- An, F. F.
- An, Q.
- Bai, J. Z.
- Ferroli, R. Baldini
- Ban, Y.
- Bennett, D. W.
- Bennett, J. V.
- Bertani, M.
- Bian, J. M.
- Boger, E.
- Bondarenko, O.
- Boyko, I.
- Braun, S.
- Briere, R. A.
- Cai, H.
- Cai, X.
- Cakir, O.
- Calcaterra, A.
- Cao, G. F.
- Cetin, S. A.
- Chang, J. F.
- Chelkov, G.
- Chen, G.
- Chen, H. S.
- Chen, J. C.
- Chen, M. L.
- Chen, S. J.
- Chen, X.
- Chen, X. R.
- Chen, Y. B.
- Cheng, H. P.
- Chu, X. K.
- Chu, Y. P.
- Cronin-Hennessy, D.
- Dai, H. L.
- Dai, J. P.
- Dedovich, D.
- Haddadi, Z.
- Kalantar-Nayestanaki, N.
- Kavatsyuk, M.
- Loehner, H.
- Messchendorp, J. G.
- Moeini, H.
- Tiemens, M.
Publication date
June 2014
DOIAbstract
With 1.06 x 10(8) psi(3686) events collected with the BESIII detector, the branching fraction of psi(3686) -> omega K+K- is measured to be (1.54 +/- 0.04 +/- 0.11) x 10(-4). This is the most precise result to date, due to the largest psi(3686) sample, improved signal reconstruction efficiency, good simulation of the detector performance, and a more accurate knowledge of the continuum contribution. Using the branching fraction of J/psi -> omega K+K-, the ratio B(psi(3868) -> K+K-)/B(J/psi -> K+K-) is determined to be (18.4 +/- 3.7)%. This constitutes a significantly improved test of the 12% rule, with the uncertainty now dominated by the J/psi branching fraction.</p
Add to ORKG