Amplitude analysis of the system produced in radiative decays
An amplitude analysis of the KSKS system produced in radiative J/ψ decays is performed using the (1310.6 ± 7.0) × 106 J/ψ decays collected by the BESIII detector. Two approaches are presented. A mass-dependent analysis is performed by parametrizing the KSKS invariant mass spectrum as a sum of Breit-Wigner line shapes. Additionally, a mass-independent analysis is performed to extract a piecewise function that describes the dynamics of the KSKS system while making minimal assumptions about the properties and number of poles in the amplitude. The dominant amplitudes in the mass-dependent analysis include the f0(1710), f0(2200), and f'2(1525). The mass-independent results, which are made available as input for further studies, are consistent with those of the mass-dependent analysis and are useful for a systematic study of hadronic interactions. The branching fraction of radiative Jψ decays to KSKS is measured to be (8.1 ± 0.4) ×10–4, where the uncertainty is systematic and the statistical uncertainty is negligible.
- Research Organization:
- Indiana Univ., Bloomington, IN (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of Hawaii, Honolulu, HI (United States); Univ. of Minnesota, Minneapolis, MN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- BESIII Collaboration
- Grant/Contract Number:
- FG02-05ER41374; SC0010118; SC0010504; SC0012069
- OSTI ID:
- 1477547
- Alternate ID(s):
- OSTI ID: 1609650
- Journal Information:
- Physical Review. D., Journal Name: Physical Review. D. Vol. 98 Journal Issue: 7; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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