Observation ofD +→K +η (′ )and Search forC PViolation inD +→π +η (′ )Decays
Creators: name: Won, E.
name: Ko, B. R.
name: Adachi, I.
name: Aihara, H.
name: Arinstein, K.
name: Asner, D. M.
name: Aushev, T.
name: Bakich, A. M.
name: Barberio, E.
name: Bay, A.
name: Bhardwaj, V.
name: Bhuyan, B.
name: Bischofberger, M.
name: Bondar, A.
name: Bozek, A.
name: Bračko, M.
name: Brodzicka, J.
name: Browder, T. E.
name: Chang, P.
name: Chen, A.
name: Chen, P.
name: Cheon, B. G.
name: Chilikin, K.
name: Cho, I.-S.
name: Cho, K.
name: Choi, S.-K.
name: Choi, Y.
name: Dalseno, J.
name: Danilov, M.
name: Doležal, Z.
name: Drásal, Z.
name: Drutskoy, A.
name: Eidelman, S.
name: Fast, J. E.
name: Gaur, V.
name: Gabyshev, N.
name: Garmash, A.
name: Goh, Y. M.
name: Golob, B.
name: Haba, J.
name: Hara, T.
name: Hayasaka, K.
name: Hayashii, H.
name: Horii, Y.
name: Hoshi, Y.
name: Hou, W.-S.
name: Hsiung, Y. B.
name: Hyun, H. J.
name: Iijima, T.
name: Inami, K.
name: Ishikawa, A.
name: Itoh, R.
name: Iwabuchi, M.
name: Iwasaki, Y.
name: Iwashita, T.
name: Joshi, N. J.
name: Julius, T'Mir
name: Kang, J. H.
name: Katayama, N.
name: Kawasaki, T.
name: Kichimi, H.
name: Kim, H. J.
name: Kim, H. O.
name: Kim, J. B.
name: Kim, J. H.
name: Kim, K. T.
name: Kim, M. J.
name: Kim, S. K.
name: Kim, Y. J.
name: Kinoshita, K.
name: Kobayashi, N.
name: Koblitz, S.
name: Kodyš, P.
name: Korpar, S.
name: Križan, P.
name: Kumita, T.
name: Kuzmin, A.
name: Kwon, Y.-J.
name: Lange, J. S.
name: Lee, M. J.
name: Lee, S.-H.
name: Li, J.
name: Li, Y.
name: Libby, J.
name: Lim, C.-L.
name: Liu, C.
name: Liu, Y.
name: Liventsev, D.
name: Louvot, R.
name: McOnie, S.
name: Miyabayashi, K.
name: Miyata, H.
name: Miyazaki, Y.
name: Mizuk, R.
name: Mohanty, G. B.
name: Nagasaka, Y.
name: Nakano, E.
name: Nakao, M.
name: Nakazawa, H.
name: Natkaniec, Z.
name: Neubauer, S.
name: Nishida, S.
name: Nishimura, K.
name: Nitoh, O.
name: Ogawa, S.
name: Ohshima, T.
name: Okuno, S.
name: Olsen, S. L.
name: Onuki, Y.
name: Pakhlov, P.
name: Pakhlova, G.
name: Park, H.
name: Park, H. K.
name: Park, K. S.
name: Pestotnik, R.
name: Petrič, M.
name: Piilonen, L. E.
name: Röhrken, M.
name: Ryu, S.
name: Sahoo, H.
name: Sakai, K.
name: Sakai, Y.
name: Sanuki, T.
name: Schneider, O.
name: Schwanda, C.
name: Schwartz, A. J.
name: Senyo, K.
name: Seon, O.
name: Sevior, M. E.
name: Shen, C. P.
name: Shibata, T.-A.
name: Shiu, J.-G.
name: Simon, F.
name: Singh, J. B.
name: Smerkol, P.
name: Sohn, Y.-S.
name: Sokolov, A.
name: Solovieva, E.
name: Stanič, S.
name: Starič, M.
name: Sumihama, M.
name: Sumiyoshi, T.
name: Suzuki, S.
name: Tatishvili, G.
name: Teramoto, Y.
name: Trabelsi, K.
name: Uchida, M.
name: Uehara, S.
name: Uglov, T.
name: Unno, Y.
name: Uno, S.
name: Usov, Y.
name: Vahsen, S. E.
name: Varner, G.
name: Vinokurova, A.
name: Wang, C. H.
name: Wang, M.-Z.
name: Wang, P.
name: Watanabe, M.
name: Watanabe, Y.
name: Williams, K. M.
name: Yabsley, B. D.
name: Yamashita, Y.
name: Yamauchi, M.
name: Zhang, Z. P.
name: Zhilich, V.
name: Zhulanov, V.
name: Zupanc, A.
name: Zyukova, O.
Publisher: name: Swinburne
Year: 2024

description: We report the first observation of the doubly Cabibbo-suppressed decays D+→K+η(′) using a 791fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e +e- collider. The ratio of the branching fractions of doubly Cabibbo-suppressed relative to singly Cabibbo-suppressed D +→π+η(′) decays are B(D +→K+η)/B(D+→π+η )=(3.06±0.43±0.14)% and B(D+→K+η ′)/B(D+→π+η ′)=(3.77±0.39±0.10)%. From these, we find that the relative final-state phase difference between the tree and annihilation amplitudes in D+ decays, δTA, is (72±9)°or (288±9)°. We also report the most precise measurements of CP asymmetries to date: ACPD+→π +η=(+1.74±1.13±0.19)% and ACPD+→ π+η′=(-0.12±1.12±0.17)%.