000003473 001__ 3473 000003473 005__ 20230320054739.0 000003473 037__ $$aBELLE2-NOTE-PL-2023-002 000003473 041__ $$aeng 000003473 100__ $$aNatsuki Kuroda 000003473 245__ $$aStudy of B+ → J/ψ K*+ (→KS pi+) decays 000003473 260__ $$a$$c2023-03-18 000003473 300__ $$a7 000003473 520__ $$aWe report a study for reconstruction of the decay chain of B0 → J/ψK∗+ followed by J/ψ → μ+μ−, K∗+ → KS0π+ and KS0 → π+π−. The vertex displacement in the same decay where the signal B+ vertex is reconstructed using all the available tracks or using only the tracks coming from KS0 gives an opportunity to investigate possible Data/MC difference in the vertex resolution. 000003473 6531_ $$aB meson vertex resolution, KS-based reconstruction. 000003473 700__ $$aKenkichi Miyabayashi 000003473 8560_ $$fmiyabaya@cc.nara-wu.ac.jp 000003473 8564_ $$uhttps://docs.belle2.org/record/3473/files/BELLE2-NOTE-PL-2023-002.pdf