Possibility of measuring a00(980)-f0(980) mixing from J/ψ→φa00(980)

The a00(980)-f0(980) mixing intensity has been predicted to be in the range of 0.01 to 0.2 by various theoretical models, but it lacks firm experimental observation. We examine the possibility of extracting the a00(980)-f0(980) mixing from the J/ψ→φf0(980)→φa00(980) reaction at the upgraded Beijing electron positron collider with the BESIII detector. While the branching ratio of this process through the a00(980)-f0(980) mixing is expected to be about O(10-6), similar to the estimated total amount from two background reactions J/ψ→γ*→φa00(980) and J/ψ→K*K+c.c.→φa00(980), the peak width from the a00(980)-f0(980) mixing is about 8 MeV, much smaller than that from other mechanisms. With 109 J/ψ events at BESIII, the a00(980)-f0(980) mixing intensity is expected to be unambiguously and precisely measured