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Coupled-Channel Analysis of the χ_{c1}(3872) Line Shape with BESIII Data.
Ablikim, M; Achasov, M N; Adlarson, P; Ai, X C; Aliberti, R; Amoroso, A; An, M R; An, Q; Bai, Y; Bakina, O; Balossino, I; Ban, Y; Batozskaya, V; Begzsuren, K; Berger, N; Berlowski, M; Bertani, M; Bettoni, D; Bianchi, F; Bianco, E; Bortone, A; Boyko, I; Briere, R A; Brueggemann, A; Cai, H; Cai, X; Calcaterra, A; Cao, G F; Cao, N; Cetin, S A; Chang, J F; Chang, T T; Chang, W L; Che, G R; Chelkov, G; Chen, C; Chen, Chao; Chen, G; Chen, H S; Chen, M L; Chen, S J; Chen, S M; Chen, T; Chen, X R; Chen, X T; Chen, Y B; Chen, Y Q; Chen, Z J; Cheng, W S; Choi, S K.
Affiliation
  • Ablikim M; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Achasov MN; Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
  • Adlarson P; Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
  • Ai XC; Zhengzhou University, Zhengzhou 450001, People's Republic of China.
  • Aliberti R; Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
  • Amoroso A; University of Turin and INFN, University of Turin, I-10125 Turin, Italy.
  • An MR; INFN, I-10125 Turin, Italy.
  • An Q; Liaoning Normal University, Dalian 116029, People's Republic of China.
  • Bai Y; State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
  • Bakina O; University of Science and Technology of China, Hefei 230026, People's Republic of China.
  • Balossino I; Southeast University, Nanjing 211100, People's Republic of China.
  • Ban Y; Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  • Batozskaya V; INFN Sezione di Ferrara, INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
  • Begzsuren K; Peking University, Beijing 100871, People's Republic of China.
  • Berger N; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Berlowski M; National Centre for Nuclear Research, Warsaw 02-093, Poland.
  • Bertani M; Institute of Physics and Technology, Peace Avenue 54B, Ulaanbaatar 13330, Mongolia.
  • Bettoni D; Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
  • Bianchi F; National Centre for Nuclear Research, Warsaw 02-093, Poland.
  • Bianco E; INFN Laboratori Nazionali di Frascati, INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
  • Bortone A; INFN Sezione di Ferrara, INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
  • Boyko I; University of Turin and INFN, University of Turin, I-10125 Turin, Italy.
  • Briere RA; INFN, I-10125 Turin, Italy.
  • Brueggemann A; University of Turin and INFN, University of Turin, I-10125 Turin, Italy.
  • Cai H; INFN, I-10125 Turin, Italy.
  • Cai X; University of Turin and INFN, University of Turin, I-10125 Turin, Italy.
  • Calcaterra A; INFN, I-10125 Turin, Italy.
  • Cao GF; Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  • Cao N; Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  • Cetin SA; University of Muenster, Wilhelm-Klemm-Strasse 9, 48149 Muenster, Germany.
  • Chang JF; Wuhan University, Wuhan 430072, People's Republic of China.
  • Chang TT; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chang WL; State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
  • Che GR; INFN Laboratori Nazionali di Frascati, INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
  • Chelkov G; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen C; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  • Chen C; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen G; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  • Chen HS; Turkish Accelerator Center Particle Factory Group, Istinye University, 34010 Istanbul, Turkey.
  • Chen ML; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen SJ; State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
  • Chen SM; Xinyang Normal University, Xinyang 464000, People's Republic of China.
  • Chen T; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen XR; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  • Chen XT; Nankai University, Tianjin 300071, People's Republic of China.
  • Chen YB; Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  • Chen YQ; Nankai University, Tianjin 300071, People's Republic of China.
  • Chen ZJ; Soochow University, Suzhou 215006, People's Republic of China.
  • Cheng WS; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Choi SK; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
Phys Rev Lett ; 132(15): 151903, 2024 Apr 12.
Article in En | MEDLINE | ID: mdl-38682963
ABSTRACT
We perform a study of the χ_{c1}(3872) line shape using the data samples of e^{+}e^{-}→γχ_{c1}(3872), χ_{c1}(3872)→D^{0}D[over ¯]^{0}π^{0}, and π^{+}π^{-}J/ψ collected with the BESIII detector. The effects of the coupled channels and the off-shell D^{*0} are included in the parametrization of the line shape. The line shape mass parameter is obtained to be M_{X}=(3871.63±0.13_{-0.05}^{+0.06}) MeV. Two poles are found on the first and second Riemann sheets corresponding to the D^{*0}D[over ¯]^{0} branch cut. The pole location on the first sheet is much closer to the D^{*0}D[over ¯]^{0} threshold than the other, and is determined to be 7.04±0.15_{-0.08}^{+0.07} MeV above the D^{0}D[over ¯]^{0}π^{0} threshold with an imaginary part -0.19±0.08_{-0.19}^{+0.14} MeV.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2024 Document type: Article
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2024 Document type: Article