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@ARTICLE{Yang:205310,
      author       = {Yang, S. D. and Shen, C. P. and Ban, Y. and Abdesselam, A.
                      and Adachi, I. and Aihara, H. and Arinstein, K. and Asner,
                      D. M. and Aulchenko, V. and Aushev, T. and Ayad, R. and
                      Bakich, A. M. and Bansal, V. and Behera, P. and Bhuyan, B.
                      and Bozek, A. and Bračko, M. and Browder, T. E. and
                      Červenkov, D. and Chekelian, Vladimir and Chen, A. and
                      Cheon, B. G. and Chilikin, K. and Chistov, R. and Cho, K.
                      and Chobanova, V. and Choi, S. -K. and Choi, Y. and Cinabro,
                      D. and Dalseno, J. and Dingfelder, J. and Doležal, Z. and
                      Drásal, Z. and Eidelman, S. and Farhat, H. and Fast, J. E.
                      and Ferber, Torben and Gabyshev, N. and Ganguly, S. and
                      Garmash, A. and Gillard, R. and Goh, Y. M. and Golob, B. and
                      Haba, J. and Hara, T. and Hayashii, H. and He, X. H. and
                      Hou, W. -S. and Huschle, M. and Iijima, T. and Inami, K. and
                      Ishikawa, A. and Itoh, Ryosuke and Jaegle, I. and Joffe, D.
                      and Joo, K. K. and Julius, T. and Kawasaki, T. and Kim, D.
                      Y. and Kim, J. B. and Kim, K. T. and Kinoshita, K. and Ko,
                      B. R. and Kodys, Peter and Korpar, Samo and Krizan, Peter
                      and Krokovny, P. and Kwon, Y. -J. and Lange, Jens Sören and
                      Libby, J. and Liventsev, D. and Lukin, P. and Miyabayashi,
                      K. and Miyata, H. and Moll, A. and Mussa, R. and Nakano, E.
                      and Nakao, Mikihiko and Nanut, T. and Nisar, N. K. and
                      Nishida, S. and Okuno, S. and Ostrowicz, Waclaw and Park, C.
                      W. and Park, H. and Pedlar, T. K. and Pestotnik, Rok and
                      Petrič, M. and Piilonen, L. E. and Ribežl, E. and
                      Rostomyan, Armine and Sakai, Y. and Sandilya, S. and
                      Santelj, L. and Sanuki, T. and Schneider, O. and Schwanda,
                      C. and Semmler, D. and Senyo, K. and Shebalin, V. and
                      Shibata, T. -A. and Shiu, J. -G. and Shwartz, B. and
                      Sibidanov, A. and Sohn, Y. -S. and Sokolov, A. and Staric,
                      Marko and Steder, Michael and Sumiyoshi, T. and Tamponi, U.
                      and Tanida, K. and Tatishvili, G. and Teramoto, Y. and
                      Uchida, M. and Uehara, S. and Uglov, T. and Unno, Y. and
                      Uno, S. and Urquijo, P. and Usov, Y. and Vahsen, S. E. and
                      Van Hulse, C. and Vanhoefer, P. and Varner, G. and
                      Vinokurova, A. and Vorobyev, V. and Vossen, A. and Wagner,
                      M. N. and Wang, C. H. and Wang, M. -Z. and Wang, P. and
                      Wang, X. L. and Watanabe, M. and Watanabe, Y. and Won, E.
                      and Yamaoka, J. and Yashchenko, Sergey and Yook, Y. and
                      Yuan, C. Z. and Zhang, Z. P. and Zhilich, V. and Zhulanov,
                      V. and Al Said, S. and Bobrov, A. and Danilov, M. and
                      Drutskoy, A. and Dutta, K. and Gaur, V. and Hayasaka, K. and
                      Kim, H. J. and Kim, J. H. and Kuzmin, A. and Li, J. and Li,
                      Y. and Li Gioi, L. and Ritter, M. and Schnell, G. and Simon,
                      F.},
      collaboration = {{Belle Collaboration}},
      title        = {{E}vidence of $\mathrm{\Upsilon }\left(1{S}\right)\to
                      {J}/\psi +{\chi }_{c1}$ and search for double-charmonium
                      production in $\mathrm{\Upsilon }\left(1{S}\right)$ and
                      $\mathrm{\Upsilon }\left(2{S}\right)$ decays},
      journal      = {Physical review / D},
      volume       = {90},
      number       = {11},
      issn         = {1550-7998},
      publisher    = {American Physical Society},
      reportid     = {PUBDB-2014-04711, Belle Preprint 2014-14. arXiv:1409.7644},
      pages        = {112008},
      year         = {2014},
      note         = {OA},
      abstract     = {Using data samples of $102×{10}^{6}$ $\mathrm{\Upsilon
                      }\left(1S\right)$ and $158×{10}^{6}$ $\mathrm{\Upsilon
                      }\left(2S\right)$ events collected with the Belle detector,
                      a first experimental search has been made for
                      double-charmonium production in the exclusive decays
                      $\mathrm{\Upsilon }\left(1S,2S\right)\to J/\psi \left({\psi
                      }^{\prime }\right)+X$, where $X={\eta }_{c}$, ${\chi
                      }_{cJ}\left(J=0,1,2\right)$, ${\eta }_{c}\left(2S\right)$,
                      $X\left(3940\right)$, and $X\left(4160\right)$. No
                      significant signal is observed in the spectra of the mass
                      recoiling against the reconstructed $J/\psi $ or ${\psi
                      }^{\prime }$ except for the evidence of ${\chi }_{c1}$
                      production with a significance of $4.6\sigma $ for
                      $\mathrm{\Upsilon }\left(1S\right)\to J/\psi +{\chi }_{c1}$.
                      The measured branching fraction
                      $\mathcal{B}\left(\mathrm{\Upsilon }\left(1S\right)\to
                      J/\psi +{\chi }_{c1}\right)$ is
                      $\left[3.90±1.21\left(\text{stat}\right)±0.23\left(\text{syst}\right)\right]×{10}^{-6}$.
                      The 90\% C.L. upper limits on the branching fractions of
                      the other modes having a significance of less than $3\sigma
                      $ are determined. These results are consistent with
                      theoretical calculations using the nonrelativistic QCD
                      factorization approach.},
      keywords     = {electron positron: annihilation (INSPIRE) / BELLE (INSPIRE)
                      / KEK-B (INSPIRE) / experimental results (INSPIRE) / upsilon
                      mesons: hadronic decay (INSPIRE) / Upsilon(9460): branching
                      ratio: measured (INSPIRE) / Upsilon(9460): branching ratio:
                      upper limit (INSPIRE) / Upsilon(10020): branching ratio:
                      upper limit (INSPIRE) / X(3940) (INSPIRE) / quantum
                      chromodynamics: factorization (INSPIRE) / quantum
                      chromodynamics: nonrelativistic (INSPIRE) / Upsilon(9460)
                      --> J/psi(3100) chi/c1(3510) (INSPIRE) / 10.52 GeV-cms
                      (INSPIRE)},
      cin          = {Belle},
      ddc          = {530},
      cid          = {I:(DE-H253)Belle-20160426},
      pnm          = {Experiments at KEK (BELLE I/II) (POF2-515)},
      pid          = {G:(DE-H253)POF2-BELLE-I-II-Exp.-20130405},
      experiment   = {EXP:(DE-H253)BELLE-20150101},
      typ          = {PUB:(DE-HGF)16 / PUB:(DE-HGF)15},
      eprint       = {1409.7644},
      howpublished = {arXiv:1409.7644},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1409.7644;\%\%$},
      doi          = {10.1103/PhysRevD.90.112008},
      url          = {https://bib-pubdb1.desy.de/record/205310},
}