Li, L. K.Schwartz, A. J.Kinoshita, K.Adachi, I.Aihara, H.Al Said, S.Asner, D. M.Atmacan, H.Aulchenko, V.Aushev, T.Ayad, R.Babu, V.Bahinipati, S.Behera, P.Bennett, J.Bessner, M.Bilka, T.Biswal, J.Bobrov, A.Bonvicini, G.Bozek, A.Bracko, M.Branchini, P.Browder, T. E.Budano, A.Campajola, M.Cervenkov, D.Chang, M. -C.Chang, P.Chekelian, V.Chen, A.Chen, Y. Q.Cheon, B. G.Chilikin, K.Cho, H. E.Cho, K.Cho, S. -J.Choi, S. -K.Choi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.Das, S.Dash, N.De Nardo, G.De Pietro, G.Dhamija, R.Di Capua, F.Dolezal, Z.Dong, T.Eidelman, S.Epifanov, D.Ferber, T.Fulsom, B. G.Garg, R.Gaur, V.Giri, A.Goldenzweig, P.Golob, B.Graziani, E.Gu, T.Guan, Y.Hadjivasiliou, C.Halder, S.Hayasaka, K.Hou, W. -S.Inami, K.Ishikawa, A.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jang, E. -J.Jia, S.Jin, Y.Joo, K. K.Kang, K. H.Karyan, G.Kiesling, C.Kim, C. H.Kim, D. Y.Kim, K. -H.Kim, S. H.Kim, Y. -K.Kodys, P.Konno, T.Korobov, A.Korpar, S.Kovalenko, E.Krizan, P.Kroeger, R.Krokovny, P.Kuhr, T.Kumar, M.Kumara, K.Kuzmin, A.Kwon, Y. -J.Lalwani, K.Laurenza, M.Lee, S. C.Li, C. H.Li Gioi, L.Libby, J.Lieret, K.Liventsev, D.Masuda, M.Matvienko, D.Merola, M.Metzner, F.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Mori, T.Nakao, M.Natkaniec, Z.Natochii, A.Nayak, L.Nayak, M.Niiyama, M.Nisar, N. K.Nishida, S.Nishimura, K.Ono, H.Oskin, P.Pakhlov, P.Pakhlova, G.Pardi, S.Park, S. -H.Passeri, A.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, Leo E.Podobnik, T.Popov, V.Prencipe, E.Prim, M. T.Rout, N.Russo, G.Sahoo, D.Sakai, Y.Sandilya, S.Sangal, A.Santelj, L.Sanuki, T.Savinov, V.Schnell, G.Schwanda, C.Seino, Y.Senyo, K.Shapkin, M.Sharma, C.Shen, C. P.Shiu, J. -G.Shwartz, B.Sokolov, A.Solovieva, E.Staric, M.Stottler, Z. S.Sumihama, M.Sumiyoshi, T.Takizawa, M.Tanida, K.Tenchini, F.Uchida, M.Uglov, T.Unno, Y.Uno, K.Uno, S.Vahsen, S. E.Van Tonder, R.Varner, G.Vinokurova, A.Waheed, E.Wang, C. H.Wang, M. -Z.Wang, P.Wang, X. L.Watanuki, S.Won, E.Yabsley, B. D.Yan, W. B.Yang, S. B.Ye, H.Yelton, J.Yin, J. H.Yusa, Y.Zhang, Z. P.Zhilich, V.Zhukova, V.2024-01-222024-01-222021-09-131029-8479https://hdl.handle.net/10919/117493We measure the branching fractions and CP asymmetries for the singly Cabibbo-suppressed decays D0 → π+π−η, D0 → K+K−η, and D0 → ϕη, using 980 fb−1 of data from the Belle experiment at the KEKB e+e− collider. We obtainB(D0→π+π−η)=[1.22±0.02(stat)±0.02(syst)±0.03(Bref)]×10−3,B(D0→K+K−η)=[1.80−0.06+0.07(stat)±0.04(syst)±0.05(Bref)]×10−4,B(D0→ϕη)=[1.84±0.09(stat)±0.06(syst)±0.05(Bref)]×10−4, where the third uncertainty (Bref) is from the uncertainty in the branching fraction of the reference mode D0 → K−π+η. The color-suppressed decay D0 → ϕη is observed for the first time, with very high significance. The results for the CP asymmetries areACP(D0π+π−η)=[0.9±1.2(stat)±0.5(syst)]%,ACP(D0→K+K−η)=[−1.4±3.3(stat)±1.1(syst)]%,ACP(D0→ϕη)=[−1.9±4.4(stat)±0.6(syst)]%. The results for D0 → π+π−η are a significant improvement over previous results. The branching fraction and ACP results for D0 → K+K−η, and the ACP result for D0 → ϕη, are the first such measurements. No evidence for CP violation is found in any of these decays. [Figure not available: see fulltext.]25 page(s)application/pdfenIn CopyrightBranching fractionCharm physicsCP violatione(+)-e(-) ExperimentsArticle - Refereedhttps://doi.org/10.1007/JHEP09(2021)07520219Piilonen, Leo [0000-0001-6836-0748]1029-8479