Watanuki S. et al.Ishikawa, A.A.IshikawaAdachi, I.I.AdachiAihara, H.H.AiharaAl Said, S.S.Al SaidAsner, D.M.D.M.AsnerAushev, T.T.AushevAyad, R.R.AyadBabu, V.V.BabuBadhrees, I.I.BadhreesBakich, A.M.A.M.BakichPAO-TI CHANGWEI-SHU HOUMIN-ZU WANG2021-07-282021-07-28201924700010https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062599280&doi=10.1103%2fPhysRevD.99.032012&partnerID=40&md5=43eda4789fc9d981a8ba1f9ef692ab14https://scholars.lib.ntu.edu.tw/handle/123456789/574712We report measurements of isospin asymmetry Δ0- and difference of direct CP asymmetries ΔACP between charged and neutral B→Xsγ decays. This analysis is based on the data sample containing 772×106BB? pairs that was collected with the Belle detector at the KEKB energy-asymmetric e+e- collider. Using a sum-of-exclusive technique with invariant Xs mass up to 2.8 GeV/c2, we obtain Δ0-=[-0.48±1.49(stat)±0.97(syst)±1.15(f+-/f00)]% and ΔACP=[+3.69±2.65(stat)±0.76(syst)]%, where the last uncertainty for Δ0- is due to the uncertainty on the production ratio of B+B- to B0B?0 in ? (4S) decays. The measured value of Δ0- is consistent with zero, allowing us to constrain the resolved photon contribution in the B→Xsγ, and improve the branching fraction prediction. The result for ΔACP is consistent with the prediction of the SM. We also measure the direct CP asymmetries for charged and neutral B→Xsγ decays. All the measurements are the most precise to date. ? 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 .[SDGs]SDG7journal article10.1103/PhysRevD.99.0320122-s2.0-85062599280