Updated Cross Section Measurement of $e^+ e^- \to K^+ K^- J/ψ$ and $K_S^0K_S^0J/ψ$ via Initial State Radiation at Belle
Creators: name: Belle Collaboration
name: Shen, C. P.
name: Yuan, C. Z.
name: Wang, P.
name: Abdesselam, A.
name: Adachi, I.
name: Aihara, H.
name: Said, S. Al
name: Asner, D. M.
name: Aulchenko, V.
name: Aushev, T.
name: Ayad, R.
name: Bakich, A. M.
name: Bala, A.
name: Bobrov, A.
name: Bonvicini, G.
name: Bozek, A.
name: Bračko, M.
name: Browder, T. E.
name: Chekelian, V.
name: Chen, A.
name: Cheon, B. G.
name: Chilikin, K.
name: Chistov, R.
name: Cho, K.
name: Chobanova, V.
name: Choi, S. -K.
name: Choi, Y.
name: Cinabro, D.
name: Dalseno, J.
name: Danilov, M.
name: Doležal, Z.
name: Drutskoy, A.
name: Dutta, D.
name: Eidelman, S.
name: Epifanov, D.
name: Farhat, H.
name: Fast, J. E.
name: Ferber, T.
name: Frey, A.
name: Gaur, V.
name: Ganguly, S.
name: Gillard, R.
name: Glattauer, R.
name: Goh, Y. M.
name: Golob, B.
name: Haba, J.
name: Hayasaka, K.
name: Hayashii, H.
name: He, X. H.
name: Hoshi, Y.
name: Hou, W. -S.
name: Hsiung, Y. B.
name: Hyun, H. J.
name: Iijima, T.
name: Ishikawa, A.
name: Itoh, R.
name: Iwasaki, Y.
name: Joffe, D.
name: Julius, T.
name: Kang, J. H.
name: Kato, E.
name: Kawasaki, T.
name: Kiesling, C.
name: Kim, D. Y.
name: Kim, H. J.
name: Kim, J. B.
name: Kim, J. H.
name: Kim, K. T.
name: Kim, M. J.
name: Kim, Y. J.
name: Kinoshita, K.
name: Ko, B. R.
name: Kodyš, P.
name: Korpar, S.
name: Križan, P.
name: Krokovny, P.
name: Kuzmin, A.
name: Kwon, Y. -J.
name: Lee, S. -H.
name: Li, J.
name: Gioi, L. Li
name: Libby, J.
name: Liu, C.
name: Liu, Z. Q.
name: Lukin, P.
name: Matvienko, D.
name: Miyabayashi, K.
name: Miyata, H.
name: Mizuk, R.
name: Moll, A.
name: Mussa, R.
name: Nagasaka, Y.
name: Nakano, E.
name: Nakao, M.
name: Natkaniec, Z.
name: Nayak, M.
name: Nedelkovska, E.
name: Nisar, N. K.
name: Nishida, S.
name: Nitoh, O.
name: Okuno, S.
name: Park, C. W.
name: Park, H.
name: Pedlar, T. K.
name: Pestotnik, R.
name: Petrič, M.
name: Piilonen, L. E.
name: Ritter, M.
name: Röhrken, M.
name: Rostomyan, A.
name: Ryu, S.
name: Saito, T.
name: Sakai, Y.
name: Sanuki, T.
name: Sato, Y.
name: Schneider, O.
name: Schnell, G.
name: Semmler, D.
name: Senyo, K.
name: Seon, O.
name: Sevior, M. E.
name: Shapkin, M.
name: Shebalin, V.
name: Shibata, T. -A.
name: Shiu, J. -G.
name: Shwartz, B.
name: Sibidanov, A.
name: Simon, F.
name: Sohn, Y. -S.
name: Sokolov, A.
name: Solovieva, E.
name: Stanič, S.
name: Starič, M.
name: Steder, M.
name: Sumiyoshi, T.
name: Tamponi, U.
name: Tatishvili, G.
name: Teramoto, Y.
name: Uchida, M.
name: Unno, Y.
name: Uno, S.
name: Urquijo, P.
name: Usov, Y.
name: Van Hulse, C.
name: Vanhoefer, P.
name: Varner, G.
name: Vorobyev, V.
name: Wagner, M. N.
name: Wang, C. H.
name: Watanabe, M.
name: Watanabe, Y.
name: Williams, K. M.
name: Won, E.
name: Yamamoto, H.
name: Yamashita, Y.
name: Yashchenko, S.
name: Yook, Y.
name: Zhang, C. C.
name: Zhang, Z. P.
name: Zhulanov, V.
name: Zupanc, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The cross sections of the processes $e^+ e^- \to K^+ K^- J/ψ$ and $K_S^0K_S^0J/ψ$ are measured via initial state radiation at center-of-mass energies between the threshold and 6.0~GeV using a data sample of 980~fb$^{-1}$ collected with the Belle detector on or near the $Υ(nS)$ resonances, where $n=$1, 2, ..., 5. The cross sections for $e^+ e^- \to K^+ K^- J/ψ$ are at a few pb level and the average cross section for $e^+ e^- \to K_S^0K_S^0J/ψ$ is $1.8\pm 0.6 (\rm stat.)\pm 0.3 (\rm syst.)$~pb between 4.4 and 5.2~GeV. All of them are consistent with previously published results with improved precision. A search for resonant structures and associated intermediate states in the cross section of the process $e^+ e^- \to K^+ K^- J/ψ$ is performed.
description: 14 pages, 7 figures