Observation ofX ( 3872 ) → J / ψ γand Search forX ( 3872 ) →ψ ′γinBDecays
Creators: name: Bhardwaj, V.
name: Trabelsi, K.
name: Singh, J. B.
name: Choi, S.-K.
name: Olsen, S. L.
name: Adachi, I.
name: Adamczyk, K.
name: Asner, D. M.
name: Aulchenko, V.
name: Aushev, T.
name: Aziz, T.
name: Bakich, A. M.
name: Barberio, E.
name: Belous, K.
name: Bhuyan, B.
name: Bischofberger, M.
name: Bondar, A.
name: Bračko, M.
name: Brodzicka, J.
name: Browder, T. E.
name: Chen, A.
name: Chen, P.
name: Cheon, B. G.
name: Cho, K.
name: Choi, Y.
name: Dalseno, J.
name: Doležal, Z.
name: Eidelman, S.
name: Epifanov, D.
name: Gaur, V.
name: Gabyshev, N.
name: Golob, B.
name: Haba, J.
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: Iwabuchi, M.
name: Iwasaki, Y.
name: Iwashita, T.
name: Joshi, N. J.
name: Julius, T'Mir
name: Kang, J. H.
name: Kawasaki, T.
name: Kiesling, C.
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: Ko, B. R.
name: Kobayashi, N.
name: Korpar, S.
name: Križan, P.
name: Kumar, R.
name: Kumita, T.
name: Kuzmin, A.
name: Kwon, Y.-J.
name: Lange, J. S.
name: Lee, M. J.
name: Lee, S.-H.
name: Li, Y.
name: Libby, J.
name: Lim, C.-L.
name: Liventsev, D.
name: Louvot, R.
name: Matvienko, D.
name: McOnie, S.
name: Miyabayashi, K.
name: Miyata, H.
name: Miyazaki, Y.
name: Mizuk, R.
name: Mohanty, G. B.
name: Mussa, R.
name: Nakano, E.
name: Nakao, M.
name: Nakazawa, H.
name: Natkaniec, Z.
name: Ng, C.
name: Nishida, S.
name: Nitoh, O.
name: Nozaki, T.
name: Ohshima, T.
name: Okuno, S.
name: Onuki, Y.
name: Pakhlova, G.
name: Park, C. W.
name: Park, H. K.
name: Pestotnik, R.
name: Petrič, M.
name: Piilonen, L. E.
name: Röhrken, M.
name: Sahoo, H.
name: Sakai, K.
name: Sakai, Y.
name: Sanuki, T.
name: Schneider, O.
name: Schwanda, C.
name: Seon, O.
name: Shapkin, M.
name: Shebalin, V.
name: Shibata, T.-A.
name: Shiu, J.-G.
name: Shwartz, B.
name: Smerkol, P.
name: Sohn, Y.-S.
name: Sokolov, A.
name: Solovieva, E.
name: Stanič, S.
name: Starič, M.
name: Sumiyoshi, T.
name: Tatishvili, G.
name: Teramoto, Y.
name: Uchida, M.
name: Uehara, S.
name: Uglov, T.
name: Unno, Y.
name: Uno, S.
name: Usov, Y.
name: Varner, G.
name: Vossen, A.
name: Wang, X. L.
name: Watanabe, M.
name: Watanabe, Y.
name: Williams, K. M.
name: Yabsley, B. D.
name: Yamashita, Y.
name: Yuan, C. Z.
name: Zhang, C. C.
name: Zhang, Z. P.
name: Zhilich, V.
name: Zhou, P.
name: Zhulanov, V.
name: Zupanc, A.
Publisher: name: Swinburne
Year: 2024

description: We report a study of B→(J/ψγ)K and B→(ψ ′γ)K decay modes using 772×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. We observe X(3872)→J/ψγ and report the first evidence for χc2→J/ψγ in B→(Xcc̄γ)K decays, while in a search for X(3872)→ψ′γ no significant signal is found. We measure the branching fractions, B(B ±→X(3872)K±)B(X(3872)→J/ ψγ)=(1.78-0.44+0.48±0.12)×10-6, B(B ±→χc2K±)=(1.11-0.34+0. 36±0.09)×10-5, B(B±→X(3872)K ±)B(X(3872)→ψ′γ)&lt;3. 45×10-6 (upper limit at 90% C.L.), and also provide upper limits for other searches.