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Studies of γγ-> γψ(2S) and e+e- ->ηϕ at Belle

Aug 10, 2022, 11:20 AM
Oral report 强子物理与味物理 Parallel Session IV (2):Hadron and Flavor Physics


Mrs Wenjing Zhu (Fudan University)


Using 980 fb-1 of data on and around the Υ(nS)(n=1,2,3,4,5) resonances collected with the Belle detector at KEKB, the two-photon process γγ-> γψ(2S) is studied from √s = 3.7 GeV to 4.2 GeV for the first time. Two structures with resonance parameters being measured are seen in the invariant mass distribution of γψ(2S). And the cross section of e+e- ->ηϕ via initial-state radiation are measured from threshold to 3.95 GeV. The resonant parameters of ϕ(1680) and the branching fraction of ϕ(1680)→ηϕ are also measured in this work.

Primary author

Mrs Wenjing Zhu (Fudan University)

Presentation materials