000002948 001__ 2948
000002948 005__ 20220511044346.0
000002948 037__ $$aBELLE2-NOTE-PL-2022-002
000002948 041__ $$aeng
000002948 100__ $$aThe Belle II Collaboration
000002948 245__ $$aStudy of photon energy bias using π0 → γγ decays from D∗+ → D0(→ K−π+π0)π+
000002948 260__ $$a$$c2022-03-30
000002948 300__ $$amult. p
000002948 520__ $$aWe reconstruct clean samples of π0 → γγ decays from the D∗+ → D0(→ K−π+π0)π+ decay chain in both data and simulation to study the bias in the reconstructed π0 mass. We use the data collected by Belle II during 2019, 2020 and the first half of 2021 which correspond to 207 fb−1 of integrated luminosity. The results from the data are compared to run-dependent and run-independent official Belle II simulations. The study is performed as a function of the photons’ energies and polar angles.
000002948 8560_ $$f2018rpy9026@mnit.ac.in
000002948 8564_ $$uhttps://docs.belle2.org/record/2948/files/BELLE2_NOTE_PL_2022_002.pdf