000002713 001__ 2713
000002713 005__ 20211020062313.0
000002713 037__ $$aBELLE2-CONF-PROC-2021-022
000002713 041__ $$aeng
000002713 100__ $$aRashmi Dhamija
000002713 245__ $$aCharmonium-like studies at Belle II
000002713 260__ $$a$$c2021-10-07
000002713 300__ $$amult. p
000002713 520__ $$aThe Belle II experiment has accumulated data corresponding to 213 fb^{-1} integrated luminosity in the past two years. Belle II plans to accumulate 50 ab^{ -1} of data which is expected to bring a large impact to the field of hadron spectroscopy. We present here the analysis of B → K J/ψπ+π- and B → Kψ(2S) using 62.8 fb^{-1} of data at Belle II. We find evidence of X(3872) → J/ψπ+π− with a signal yield of 14.4 ± 4.6 and a statistical significance of 4.6 σ. We also present the preliminary results of e+e− → π+π- J/ψ via ISR using 37.8 fb^{-1} of data at Belle II.
000002713 8560_ $$frshmiphysicist@gmail.com
000002713 8564_ $$uhttps://docs.belle2.org/record/2713/files/BELLE2-CONF-PROC-2021-022.pdf
000002713 8564_ $$uhttps://docs.belle2.org/record/2713/files/BELLE2-CONF-PROC-2021-022-v1.pdf
000002713 8564_ $$uhttps://docs.belle2.org/record/2713/files/BELLE2-CONF-PROC-2021-022-v2.pdf