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@ARTICLE{Yang:172375,
      author       = {Yang, S. D. and Shen, C. P. and Ban, Y. and Abdesselam, A.
                      and Adachi, I. and Aihara, H. and Said, S. Al 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 Bobrov, Andrey 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 Danilov,
                      Michael and Dingfelder, J. and Doležal, Z. and Drásal, Z.
                      and Drutskoy, Alexey and Dutta, Koushik and Eidelman, S. and
                      Farhat, H. and Fast, J. E. and Ferber, Torben and Gaur, V.
                      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,
                      Hyun-Jeong and Kim, J. B. and Kim, Joo-Hee and Kim, K. T.
                      and Kinoshita, K. and Ko, B. R. and Kodys, Peter and Korpar,
                      Samo and Krizan, Peter and Krokovny, P. and Kuzmin, Alexei
                      and Kwon, Y. -J. and Lange, Jens Sören and Li, Jie and Li,
                      Yongjin and Gioi, L. Li 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 Ritter, Marti and Rostomyan, Armine and
                      Sakai, Y. and Sandilya, S. and Santelj, L. and Sanuki, T.
                      and Schneider, O. and Schnell, Gunar 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
                      Simon, Frank 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.},
      collaboration = {{Belle Collaboration}},
      title        = {{E}vidence of $\Upsilon(1{S}) \to {J}/\psi+\chi_{c1}$ and
                      search for double-charmonium production in $\Upsilon(1{S})$
                      and $\Upsilon(2{S})$ decays},
      reportid     = {PUBDB-2014-03704, BELLE-PREPRINT-2014-14. arXiv:1409.7644},
      pages        = {12},
      year         = {2014},
      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},
      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)25 / PUB:(DE-HGF)15},
      eprint       = {1409.7644},
      howpublished = {arXiv:1409.7644},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1409.7644;\%\%$},
      url          = {https://bib-pubdb1.desy.de/record/172375},
}