Abstract

Using about 226×106 J/ψ events and 106×106 ψ′ events accumulated with BESIII detector operating at BEPCII e+e− collider, the existence of pp̄ mass threshold enhancement and X(1835) is confirmed. Two new resonances, X(2120) and X(2370) are also observed in J/ψ→γη′π+π−. In the analysis of J/ψ→ωηπ+π−, a new process J/ψ→ωX(1870)→ωa0(980)π is seen with a significance of 7.7σ. In addition, a direct measurement of f0(980)→a00(980) and a00(980)→f0(980) mixing transitions is presented to probe the properties of these two scalar states.

Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call