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Observation of the ψ(1 3D2) State in e+e-→π+π-γχc1 at BESIII.
Ablikim, M; Achasov, M N; Ai, X C; Albayrak, O; Albrecht, M; Ambrose, D J; Amoroso, A; An, F F; An, Q; Bai, J Z; Baldini Ferroli, R; Ban, Y; Bennett, D W; Bennett, J V; Bertani, M; Bettoni, D; Bian, J M; Bianchi, F; Boger, E; Bondarenko, O; Boyko, I; Briere, R A; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, G F; Cetin, S A; Chang, J F; Chelkov, G; Chen, G; Chen, H S; Chen, H Y; Chen, J C; Chen, M L; Chen, S J; Chen, X; Chen, X R; Chen, Y B; Cheng, H P; Chu, X K; Cibinetto, G; Cronin-Hennessy, D; Dai, H L; Dai, J P; Dbeyssi, A; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I.
Afiliação
  • Ablikim M; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Achasov MN; G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
  • Ai XC; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Albayrak O; Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  • Albrecht M; Bochum Ruhr-University, D-44780 Bochum, Germany.
  • Ambrose DJ; University of Rochester, Rochester, New York 14627, USA.
  • Amoroso A; University of Turin, I-10125 Turin, Italy.
  • An FF; INFN, I-10125 Turin, Italy.
  • An Q; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Bai JZ; University of Science and Technology of China, Hefei 230026, People's Republic of China.
  • Baldini Ferroli R; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Ban Y; INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
  • Bennett DW; Peking University, Beijing 100871, People's Republic of China.
  • Bennett JV; Indiana University, Bloomington, Indiana 47405, USA.
  • Bertani M; Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  • Bettoni D; INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
  • Bian JM; INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
  • Bianchi F; University of Minnesota, Minneapolis, Minnesota 55455, USA.
  • Boger E; University of Turin, I-10125 Turin, Italy.
  • Bondarenko O; INFN, I-10125 Turin, Italy.
  • Boyko I; Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  • Briere RA; KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands.
  • Cai H; Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  • Cai X; Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  • Cakir O; Wuhan University, Wuhan 430072, People's Republic of China.
  • Calcaterra A; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Cao GF; Istanbul Aydin University, 34295 Sefakoy, Istanbul, Turkey.
  • Cetin SA; INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
  • Chang JF; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chelkov G; Dogus University, 34722 Istanbul, Turkey.
  • Chen G; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen HS; Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  • Chen HY; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen JC; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen ML; Beihang University, Beijing 100191, People's Republic of China.
  • Chen SJ; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen X; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen XR; Nanjing University, Nanjing 210093, People's Republic of China.
  • Chen YB; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Cheng HP; Lanzhou University, Lanzhou 730000, People's Republic of China.
  • Chu XK; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Cibinetto G; Huangshan College, Huangshan 245000, People's Republic of China.
  • Cronin-Hennessy D; Peking University, Beijing 100871, People's Republic of China.
  • Dai HL; INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
  • Dai JP; University of Minnesota, Minneapolis, Minnesota 55455, USA.
  • Dbeyssi A; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Dedovich D; Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
  • Deng ZY; Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
  • Denig A; Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  • Denysenko I; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Phys Rev Lett ; 115(1): 011803, 2015 Jul 03.
Article em En | MEDLINE | ID: mdl-26182091
ABSTRACT
We report the observation of the X(3823) state in the process e+e-→π+π-X(3823)→π+π-γχc1 with a statistical significance of 6.2σ, in data samples at center-of-mass energies sqrt[s]=4.230, 4.260, 4.360, 4.420, and 4.600 GeV collected with the BESIII detector at the BEPCII electron positron collider. The measured mass of the X(3823) state is (3821.7±1.3±0.7) MeV/c2, where the first error is statistical and the second systematic, and the width is less than 16 MeV at the 90% confidence level. The products of the Born cross sections for e+e-→π+π-X(3823) and the branching ratio B[X(3823)→γχc1,c2] are also measured. These measurements are in good agreement with the assignment of the X(3823) state as the ψ(1 3D2) charmonium state.
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2015 Tipo de documento: Article
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2015 Tipo de documento: Article