Study of a0(980)--f0(980) mixing

Details Study of a0(980)--f0(980) mixing Study of a0(980)--f0(980) mixing

2010-12-23

arxiv.org/abs/1012.5131v2

Phys.Rev.D83:032003,2011

Physics

High Energy Physics

High Energy Physics - Experiment

19 pages, 4 figures, published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.83.032003

Using samples of 2.25*10^8 J/psi events and 1.06*10^8 psi' events collected with the BES III detector, we study the f0(980) to a0(980) and a0(980) to f0(980) transitions in the processes J/psi --> phi f0(980) --> phi a0(980) and chi_c1 --> pi^0 a0(980) --> pi^0 f0(980), respectively. Evidence for f0(980) --> a0(980) is found with a significance of 3.4 sigma, while in the case of a0(980) --> f0(980) transition, the significance is 1.9 sigma. Measurements and upper limits of both branching ratios and mixing intensities are determined.

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