Search for Upsilon(1S,2S) to Z⁺_{c}Z^{(prime) -}_{c} and e⁺e⁻ to Z⁺_{c}Z^{(prime) -}_{c} at sqrt{s} = 10.52, 10.58, and 10.867 GeV

Belle Collaboration: S.Jia , C. P. Shen , C. Z. Yuan , I. Adachi , H. Aihara , S. Al Said , D. M. Asner , V. Aulchenko

show 171 more authors

T. Aushev R. Ayad V. Babu I. Badhrees V. Bansal P. Behera C. Bele\~no B. Bhuyan T. Bilka J. Biswal A. Bozek M. Bra\v{c}ko D. \v{C}ervenkov V. Chekelian A. Chen B. G. Cheon K. Chilikin K. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe N. Dash S. Di Carlo Z. Dole\v{z}al S. Eidelman J. E. Fast T. Ferber B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Garmash M. Gelb A. Giri P. Goldenzweig E. Guido J. Haba T. Hara K. Hayasaka H. Hayashii M. T. Hedges S. Hirose W.-S. Hou T. Iijima K. Inami G. Inguglia A. Ishikawa R. Itoh Y. Iwasaki W. W. Jacobs I. Jaegle H. B. Jeon Y. Jin T. Julius G. Karyan T. Kawasaki C. Kiesling D. Y. Kim H. J. Kim J. B. Kim K. T. Kim S. H. Kim K. Kinoshita P. Kody\v{s} S. Korpar D. Kotchetkov P. Kri\v{z}an R. Kroeger P. Krokovny T. Kuhr R. Kulasiri T. Kumita Y.-J. Kwon J. S. Lange I. S. Lee S. C. Lee L. K. Li Y. Li Y. B. Li L. Li Gioi J. Libby D. Liventsev M. Lubej T. Luo J. MacNaughton M. Masuda T. Matsuda M. Merola K. Miyabayashi H. Miyata R. Mizuk H. K. Moon R. Mussa E. Nakano T. Nanut K. J. Nath Z. Natkaniec M. Nayak M. Niiyama S. Nishida S. Ogawa S. Okuno H. Ono P. Pakhlov G. Pakhlova B. Pal S. Pardi H. Park S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen V. Popov M. Ritter A. Rostomyan G. Russo M. Salehi S. Sandilya L. Santelj T. Sanuki V. Savinov O. Schneider G. Schnell C. Schwanda Y. Seino K. Senyo M. E. Sevior V. Shebalin T.-A. Shibata J.-G. Shiu B. Shwartz F. Simon A. Sokolov E. Solovieva S. Stani\v{c} M. Stari\v{c} J. F. Strube M. Sumihama T. Sumiyoshi M. Takizawa U. Tamponi K. Tanida F. Tenchini K. Trabelsi M. Uchida T. Uglov S. Uno P. Urquijo Y. Usov C. Van Hulse G. Varner A. Vinokurova V. Vorobyev A. Vossen B. Wang C. H. Wang M.-Z. Wang P. Wang X. L. Wang M. Watanabe E. Widmann E. Won H. Ye S. Zakharov Z. P. Zhang V. Zhilich V. Zhukova V. Zhulanov A. Zupanc

Authors on Pith no claims yet

classification ✦ hep-ex hep-ph

keywords upsilonprimesqrtstatebranchingdecaysobservedproduct

0 comments

read the original abstract

The first search for $Z_{c}$ pair production in $\Upsilon(1S)$ and $\Upsilon(2S)$ decays and in $e^{+}e^{-}$ annihilation at $\sqrt{s}$ = 10.52, 10.58, and 10.867 GeV is conducted using data collected with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant signals are observed in any of the studied modes, and the 90\% credibility level upper limits on their product branching fractions in $\Upsilon(1S)$ and $\Upsilon(2S)$ decays (${\cal B}(\Upsilon(1S,2S)\to Z^{+}_{c}Z^{(\prime) -}_{c})\times{\cal B}(Z^{+}_{c}\to\pi^{+}+c\bar c)$ ($c\bar c=J/\psi$, $\chi_{c1}(1P)$, $\psi(2S)$)) and the product of Born cross section and branching fraction for $e^{+}e^{-} \to Z^{+}_{c}Z^{(\prime) -}_{c}$ ($\sigma(e^+e^- \to Z^{+}_{c}Z^{(\prime) -}_{c})\times {\cal B}(Z^{+}_{c} \to \pi^+ +c\bar c)$) at $\sqrt{s}$ = 10.52, 10.58, and 10.867 GeV are determined. Here, $Z_{c}$ refers to the $Z_{c}(3900)$ and $Z_{c}(4200)$ observed in the $\pi J/\psi$ final state, the $Z_{c1}(4050)$ and $Z_{c2}(4250)$ in the $\pi\chi_{c1}(1P)$ state, and the $Z_{c}(4050)$ and $Z_{c}(4430)$ in the $\pi\psi(2S)$ state.

This paper has not been read by Pith yet.

Search for Upsilon(1S,2S) to Z⁺_{c}Z^{(prime) -}_{c} and e⁺e⁻ to Z⁺_{c}Z^{(prime) -}_{c} at sqrt{s} = 10.52, 10.58, and 10.867 GeV

discussion (0)