ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2013, vol. 87, p. -
Partial wave analysis of J/ψ→γηη
© 2013 American Physical Society. Based on a sample of 2.25×108 J/ψ events collected with the BESIII detector at BEPCII, a full partial wave analysis on J/ ψ→γηη was performed using the relativistic covariant tensor amplitude method. The results show that the dominant 0<sup>++</sup> and 2<sup>++</sup> components are from the f<inf>0</inf>(1710), f<inf>0</inf>(2100), f<inf>0</inf>(1500), f2′(1525), f<inf>2</inf>(1810) and f <inf>2</inf>(2340). The resonance parameters and branching fractions are also presented.