Search for $\Lambda_c^+\to\phi p \pi^0$ and measurement of $\Lambda_c^+\to K^-\pi^+ p \pi^0$ decays
Creators: name: Pal, B.
name: Schwartz, A. J.
name: Adachi, I.
name: Aihara, H.
name: Al Said, S.
name: Asner, D. M.
name: Aushev, T.
name: Ayad, R.
name: Badhrees, I.
name: Bakich, A. M.
name: Bansal, V.
name: Behera, P.
name: Berger, M.
name: Bhardwaj, V.
name: Biswal, J.
name: Bobrov, A.
name: Bozek, A.
name: Bračko, M.
name: Browder, T. E.
name: Červenkov, D.
name: Chekelian, V.
name: Chen, A.
name: Cheon, B. G.
name: Chilikin, K.
name: Cho, K.
name: Choi, S.-K.
name: Choi, Y.
name: Cinabro, D.
name: Dash, N.
name: Di Carlo, S.
name: Doležal, Z.
name: Drásal, Z.
name: Eidelman, S.
name: Ferber, T.
name: Fulsom, B. G.
name: Gaur, V.
name: Gabyshev, N.
name: Garmash, A.
name: Goldenzweig, P.
name: Guido, E.
name: Hara, T.
name: Hayasaka, K.
name: Hayashii, H.
name: Hou, W.-S.
name: Hsu, C.-L.
name: Inami, K.
name: Ishikawa, A.
name: Itoh, R.
name: Jacobs, W. W.
name: Jaegle, I.
name: Jeon, H. B.
name: Jia, S.
name: Jin, Y.
name: Joffe, D.
name: Joo, K. K.
name: Karyan, G.
name: Kato, Y.
name: Kim, D. Y.
name: Kim, J. B.
name: Kim, K. T.
name: Kim, S. H.
name: Kim, Y. J.
name: Kinoshita, K.
name: Kodyš, P.
name: Korpar, S.
name: Kotchetkov, D.
name: Krokovny, P.
name: Kuhr, T.
name: Kulasiri, R.
name: Kwon, Y.-J.
name: Li, C. H.
name: Li, L.
name: Li, Y.
name: Li Gioi, L.
name: Libby, J.
name: Liventsev, D.
name: Lubej, M.
name: Luo, T.
name: MacNaughton, J.
name: Matvienko, D.
name: Merola, M.
name: Miyabayashi, K.
name: Miyata, H.
name: Mizuk, R.
name: Mohanty, G. B.
name: Moon, H. K.
name: Mori, T.
name: Mussa, R.
name: Nakano, E.
name: Nakao, M.
name: Nanut, T.
name: Nath, K. J.
name: Nayak, M.
name: Niiyama, M.
name: Nishida, S.
name: Ogawa, S.
name: Ono, H.
name: Pakhlov, P.
name: Pakhlova, G.
name: Pardi, S.
name: Park, C.-S.
name: Paul, S.
name: Pedlar, T. K.
name: Pestotnik, R.
name: Piilonen, L. E.
name: Ritter, M.
name: Rostomyan, A.
name: Sakai, Y.
name: Sandilya, S.
name: Santelj, L.
name: Sanuki, T.
name: Savinov, V.
name: Schneider, O.
name: Schnell, G.
name: Schwanda, C.
name: Seino, Y.
name: Senyo, K.
name: Sevior, M. E.
name: Shibata, T.-A.
name: Shiu, J.-G.
name: Simon, F.
name: Sokolov, A.
name: Solovieva, E.
name: Starič, M.
name: Strube, J. F.
name: Sumihama, M.
name: Sumiyoshi, T.
name: Takizawa, M.
name: Tamponi, U.
name: Tanida, K.
name: Tenchini, F.
name: Uchida, M.
name: Uglov, T.
name: Uno, S.
name: Van Hulse, C.
name: Varner, G.
name: Varvell, K. E.
name: Vinokurova, A.
name: Vorobyev, V.
name: Wang, C. H.
name: Wang, M.-Z.
name: Wang, X. L.
name: Watanabe, M.
name: Watanabe, Y.
name: Watanuki, S.
name: Widmann, E.
name: Won, E.
name: Yamashita, Y.
name: Ye, Hua
name: Yelton, J.
name: Yuan, C. Z.
name: Zhang, Z. P.
name: Zhilich, V.
name: Zhukova, V.
name: Zhulanov, V.
name: Zupanc, A.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2017
Subjects: electron positron: annihilation
electron positron: colliding beams
Lambda/c+: hadronic decay
Lambda/c+: rare decay
pentaquark: hadroproduction
pentaquark: hadronic decay
Lambda/c+: branching ratio: upper limit
Lambda/c+: branching ratio: measured
Upsilon(10870): electroproduction
Upsilon(10570): electroproduction
BELLE
KEK-B
experimental results
Lambda/c+ --&gt; Phi(1020) p pi0
Lambda/c+ --&gt; K- pi+ p pi0

description: We have searched for the Cabibbo-suppressed decay $\Lambda_c^+\to\phi p\pi^0$ in $e^+e^-$ collisions using a data sample corresponding to an integrated luminosity of 915 $\rm fb^{-1}$. The data were collected by the Belle experiment at the KEKB $e^+e^-$ asymmetric-energy collider running at or near the $\Upsilon(4S)$ and $\Upsilon(5S)$ resonances. No significant signal is observed, and we set an upper limit on the branching fraction of $\mathcal{B}(\Lambda_c^+\to \phi p\pi^0) &lt;15.3\times10^{-5}$ at 90% confidence level. The contribution for nonresonant $\Lambda_c^+\to K^+K^- p\pi^0$ decays is found to be consistent with zero and the corresponding upper limit on its branching fraction is set to be $\mathcal{B}(\Lambda_c^+\to K^+K^-p\pi^0)_{\rm NR} &lt;6.3\times10^{-5} $ at 90% confidence level. We also measure the branching fraction for the Cabibbo-favored decay $\Lambda_c^+\to K^-\pi^+p\pi^0$; the result is $\mathcal{B}(\Lambda_c^+\to K^-\pi^+p\pi^0)= (4.42\pm0.05\, (\rm stat.) \pm 0.12\, (\rm syst.) \pm 0.16\, (\mathcal{B}_{\rm Norm}))\%$, which is the most precise measurement to date. Finally, we have searched for an intermediate hidden-strangeness pentaquark decay $P^+_s\to\phi p$. We see no evidence for this intermediate decay and set an upper limit on the product branching fraction of ${\cal B}(\Lambda_c^+\to P^+_s \pi^0)\times {\cal B}(P^+_s\to\phi p) &lt;8.3\times 10^{-5}$ at 90% confidence level.