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  • Determination of the CKM angle $\phi_{3}$ from a combination of Belle and Belle II results
    Collaborations, Belle II; Ayad, R; Bae, H; Bambade, P; Becherer, F; Becker, J; Belous, K; Bertemes, M; Bessner, M; Bilka, T; Bobrov, A; Bračko, M; Briere, R. A; Cecchi, C; Chang, P; Chilikin, K; Choudhury, S; Das, S; De Pietro, G; Epifanov, D; Fodor, A; Giakoustidis, G; Giri, A; Gobbo, B; Gogota, O; Goldenzweig, P; Granderath, S; Han, Y; Hazra, S; Villanueva, M. Hernández; Hsu, C. -L; Inami, K; Ishikawa, A; Itoh, R; Jacobs, W. W; Jia, S; Kalita, D; Kim, K. -H; Kim, Y. -K; Kinoshita, K; Kodyš, P; Kuhr, T; Kunigo, T; Lai, Y. -T; Libby, J; Maiti, R; Martellini, C; Masuda, M; Metzner, F; Miller, C; Mirra, M; Molina-Gonzalez, N; Mondal, S; Moneta, S; Mrvar, M; Mussa, R; Natochii, A; Nayak, M; Neu, M; Ogawa, S; Pakhlova, G; Parham, K; Park, S. -H; Patra, S; Paul, S; Pedlar, T. K; Peschke, R; Piccolo, M; Pokharel, S; Raiz, S; Reif, M; Reiter, S; Robertson, S. H; Sanders, D. A; Sandilya, S; Sato, Y; Schwanda, C; Seino, Y; Selce, A; Senyo, K; Serrano, J; Sfienti, C; Shan, W; Skorupa, J; Soffer, A; Starič, M; Stroili, R; Sutcliffe, W; Tsaklidis, I; Ueda, I; Uglov, T; van Tonder, R; Vitale, L; Vobbilisetti, V; Wang, E; Wang, Z; Won, E; Yelton, J; Yuan, C. Z; Zhukova, V. I

    04/2024
    Journal Article

    We report a determination of the CKM angle $\phi_{3}$, also known as $\gamma$, from a combination of measurements using samples of up to 711~fb$^{-1}$ from the Belle experiment and up to 362~fb$^{-1}$ from the Belle II experiment. We combine results from analyses of $B^+\to DK^+, B^+\to D\pi^+$, and $B^+ \to D^{*}K^+$ decays, where $D$ is an admixture of $D^0$ and $\overline{D}{}^{0}$ mesons, in a likelihood fit to obtain $\phi_{3} = (78.6^{+7.2}_{-7.3})^{\circ}$. We also briefly discuss the interpretation of this result.

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