000002573 001__ 2573 000002573 005__ 20210729145708.0 000002573 037__ $$aBELLE2-TALK-CONF-2021-068 000002573 041__ $$aeng 000002573 088__ $$aBELLE2-TALK-DRAFT-2021-101 000002573 100__ $$aSen Jia 000002573 245__ $$aISR studies at Belle II 000002573 260__ $$a19th International Conference on Hadron Spectroscopy and Structure (Hadron 2021)$$c2021-07-26 000002573 300__ $$amult. p 000002573 520__ $$aISR physics is an interesting way to look for resonant states, which - in case of observation - has a clear signature. This is unique to an e+e- experiments. We present here first studies performed with the early Phase 3 data at Belle II. The Belle II experiment has recorded data corresponding to 89.99 fb-1 integrated luminosity, with which we have performed the analysis of the e+e- -> psi(2S), psi(2S)-> pi+ pi- Jpsi, pi0 pi0 Jpsi, and eta Jpsi. 000002573 8560_ $$fdjaffe@bnl.gov 000002573 8564_ $$uhttps://docs.belle2.org/record/2573/files/BELLE2-TALK-CONF-2021-068.pdf