First measurements of absolute branching fractions of $\Xi_c^0$ at Belle
Creators: name: Li, Y. B.
name: Shen, C. P.
name: Yuan, C. Z.
name: Adachi, I.
name: Aihara, H.
name: Al Said, S.
name: Asner, D. M.
name: Aushev, T.
name: Ayad, R.
name: Badhrees, I.
name: Ban, Y.
name: Bansal, V.
name: Beleño, C.
name: Berger, M.
name: Bhardwaj, V.
name: Bhuyan, B.
name: Bilka, T.
name: Biswal, J.
name: Bondar, A.
name: Bozek, A.
name: Bračko, M.
name: Cao, L.
name: Červenkov, D.
name: Chen, A.
name: Cheon, B. G.
name: Chilikin, K.
name: Cho, K.
name: Choi, S.-K.
name: Choi, Y.
name: Cinabro, D.
name: Cunliffe, S.
name: Di Carlo, S.
name: Doležal, Z.
name: Dong, T. V.
name: Drásal, Z.
name: Eidelman, S.
name: Fast, J. E.
name: Fulsom, B. G.
name: Garg, R.
name: Gaur, V.
name: Gabyshev, N.
name: Garmash, A.
name: Giri, A.
name: Goldenzweig, P.
name: Greenwald, D.
name: Grube, B.
name: Hayasaka, K.
name: Hayashii, H.
name: Hsu, C.-L.
name: Iijima, T.
name: Inami, K.
name: Inguglia, G.
name: Ishikawa, A.
name: Itoh, R.
name: Iwasaki, M.
name: Iwasaki, Y.
name: Jacobs, W. W.
name: Jia, S.
name: Jin, Y.
name: Joffe, D.
name: Joo, K. K.
name: Karyan, G.
name: Kawasaki, T.
name: Kichimi, H.
name: Kim, D. Y.
name: Kim, H. J.
name: Kim, J. B.
name: Kim, K. T.
name: Kim, S. H.
name: Kinoshita, K.
name: Kodyš, P.
name: Korpar, S.
name: Kotchetkov, D.
name: Križan, P.
name: Kroeger, R.
name: Krokovny, P.
name: Kumita, T.
name: Kuzmin, A.
name: Kwon, Y.-J.
name: Lee, J. Y.
name: Lee, S. C.
name: Li, L. K.
name: Li Gioi, L.
name: Libby, J.
name: Liventsev, D.
name: Lubej, M.
name: MacNaughton, J.
name: Masuda, M.
name: Matsuda, T.
name: Merola, M.
name: Miyabayashi, K.
name: Miyata, H.
name: Mizuk, R.
name: Mohanty, G. B.
name: Mussa, R.
name: Nakano, E.
name: Nakao, M.
name: Nath, K. J.
name: Nayak, M.
name: Niiyama, M.
name: Nishida, S.
name: Ono, H.
name: Onuki, Y.
name: Pakhlov, P.
name: Pakhlova, G.
name: Pal, B.
name: Pardi, S.
name: Park, S.-H.
name: Paul, S.
name: Pedlar, T. K.
name: Pestotnik, R.
name: Piilonen, L. E.
name: Popov, V.
name: Prencipe, E.
name: Russo, G.
name: Sakai, Y.
name: Salehi, M.
name: Sandilya, S.
name: Santelj, L.
name: Sanuki, T.
name: Savinov, V.
name: Schneider, O.
name: Schnell, G.
name: Schueler, J.
name: Schwanda, C.
name: Schwartz, A. J.
name: Seino, Y.
name: Senyo, K.
name: Sevior, M. E.
name: Shibata, T.-A.
name: Shiu, J.-G.
name: Shwartz, B.
name: Solovieva, E.
name: Starič, M.
name: Sumihama, M.
name: Sumiyoshi, T.
name: Sutcliffe, W.
name: Takizawa, M.
name: Tanida, K.
name: Tao, Y.
name: Tenchini, F.
name: Trabelsi, K.
name: Uchida, M.
name: Uglov, T.
name: Unno, Y.
name: Uno, S.
name: Urquijo, P.
name: Van Tonder, R.
name: Varner, G.
name: Wang, B.
name: Wang, C. H.
name: Wang, M.-Z.
name: Wang, P.
name: Wang, X. L.
name: Won, E.
name: Yang, S. B.
name: Ye, H.
name: Yelton, J.
name: Yin, J. H.
name: Yusa, Y.
name: Zhang, Z. P.
name: Zhilich, V.
name: Zhukova, V.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2018
Subjects: branching ratio: measured
BELLE
Upsilon(10570)
missing-mass
KEK-B

description: We present the first measurements of absolute branching fractions of $\Xi_c^0$ decays into $\Xi^- \pi^+$, $\Lambda K^- \pi^+$, and $p K^- K^- \pi^+$ final states. The measurements are made using a data set comprising $(772\pm 11)\times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+e^-$ collider. We first measure the absolute branching fraction for $B^- \to \bar{\Lambda}_c^- \Xi_c^0$ using a missing-mass technique, the result is ${\cal B}(B^- \to \bar{\Lambda}_c^- \Xi_c^0) = [9.51 \pm 2.10(\rm stat.) \pm 0.88(\rm syst.)] \times 10^{-4}$. We subsequently measure the product branching fractions ${\cal B}(B^- \to \bar{\Lambda}_c^- \Xi_c^0){\cal B}(\Xi_c^0 \to \Xi^- \pi^+)$, ${\cal B}(B^- \to \bar{\Lambda}_c^- \Xi_c^0) {\cal B}(\Xi_c^0 \to \Lambda K^- \pi^+)$, and ${\cal B}(B^- \to \bar{\Lambda}_c^- \Xi_c^0) {\cal B}(\Xi_c^0 \to p K^- K^- \pi^+)$ with improved precision. Dividing these product branching fractions by the result for $B^- \to \bar{\Lambda}_c^- \Xi_c^0$ yields the following branching fractions: ${\cal B}(\Xi_c^0 \to \Xi^- \pi^+)= [1.80 \pm 0.50(\rm stat.) \pm 0.14(\rm syst.)]\%$, ${\cal B}(\Xi_c^0 \to \Lambda K^- \pi^+)=[1.17 \pm 0.37(\rm stat.) \pm 0.09(\rm syst.)]\%$, and ${\cal B}(\Xi_c^0 \to p K^- K^- \pi^+)=[0.58 \pm 0.23(\rm stat.) \pm 0.05(\rm syst.)]\%$. Our result for ${\cal B}(\Xi_c^0 \to \Xi^- \pi^+)$ can be combined with $\Xi_c^0$ branching fractions measured relative to $\Xi_c^0 \to \Xi^- \pi^+$ to yield other absolute $\Xi_c^0$ branching fractions.