https://doi.org/10.1140/epjc/s10052-012-2229-1
Regular Article - Theoretical Physics
Determination of f
0–σ mixing angle through 
decays
1
Department of Physics, Jiang Su Normal University, XuZhou, 221116, China
2
Institute of High Energy Physics, P.O. Box 918(4), Beijing, 100049, China
* e-mail: lijw@jsnu.edu.cn
Received:
5
July
2012
Revised:
23
October
2012
Published online:
13
November
2012
We study 
decays, the quark content of f
0(980) and the mixing angle of f
0(980) and σ(600). We calculate not only the factorizable contribution in the QCD factorization scheme but also the nonfactorizable hard spectator corrections in QCDF and pQCD approach. We get a result consistent with the experimental data of and predict the branching ratio of 
–J/ψσ. We suggest two ways to determine f
0–σ mixing angle θ. Using the experimental measured branching ratio of , we can get the f
0–σ mixing angle θ with some theoretical uncertainties. We suggest another way to determine the f
0–σ mixing angle θ using both experimental measured decay branching ratios 
to avoid theoretical uncertainties.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2012
