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First Measurement of Polarizations in the Decay D
Ablikim, M; Achasov, M N; Adlarson, P; Ahmed, S; Albrecht, M; Aliberti, R; Amoroso, A; An, M R; An, Q; Bai, X H; Bai, Y; Bakina, O; Baldini Ferroli, R; Balossino, I; Ban, Y; Begzsuren, K; Berger, N; Bertani, M; Bettoni, D; Bianchi, F; Bloms, J; Bortone, A; Boyko, I; Briere, R A; Cai, H; Cai, X; Calcaterra, A; Cao, G F; Cao, N; Cetin, S A; Chang, J F; Chang, W L; Chelkov, G; Chen, D Y; Chen, G; Chen, H S; Chen, M L; Chen, S J; Chen, X R; Chen, Y B; Chen, Z J; Cheng, W S; Cibinetto, G; Cossio, F; Cui, X F; Dai, H L; Dai, X C; Dbeyssi, A; de Boer, R E; Dedovich, D.
Afiliación
  • 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.
  • Adlarson P; Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
  • Ahmed S; Helmholtz Institute Mainz, Staudinger Weg 18, D-55099 Mainz, Germany.
  • Albrecht M; Bochum Ruhr-University, D-44780 Bochum, Germany.
  • 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 XH; State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
  • Bai Y; University of Science and Technology of China, Hefei 230026, People's Republic of China.
  • Bakina O; University of Jinan, Jinan 250022, People's Republic of China.
  • Baldini Ferroli R; Southeast University, Nanjing 211100, People's Republic of China.
  • Balossino I; Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  • Ban Y; INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
  • Begzsuren K; INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
  • Berger N; Peking University, Beijing 100871, People's Republic of China.
  • 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; INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
  • Bloms J; INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
  • Bortone A; University of Turin and INFN, University of Turin, I-10125 Turin, Italy.
  • Boyko I; INFN, I-10125 Turin, Italy.
  • Briere RA; University of Muenster, Wilhelm-Klemm-Straße 9, 48149 Muenster, Germany.
  • Cai H; University of Turin and INFN, University of Turin, I-10125 Turin, Italy.
  • Cai X; INFN, I-10125 Turin, Italy.
  • Calcaterra A; Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  • Cao GF; Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  • Cao N; Wuhan University, Wuhan 430072, People's Republic of China.
  • Cetin SA; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chang JF; State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
  • Chang WL; INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
  • Chelkov G; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen DY; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  • Chen G; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen HS; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  • Chen ML; Turkish Accelerator Center Particle Factory Group, Istanbul Bilgi University, 34060 Eyup, Istanbul, Turkey.
  • Chen SJ; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen XR; State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
  • Chen YB; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Chen ZJ; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  • Cheng WS; Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  • Cibinetto G; Central China Normal University, Wuhan 430079, People's Republic of China.
  • Cossio F; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Cui XF; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Dai HL; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  • Dai XC; Institute of High Energy Physics, Beijing 100049, People's Republic of China.
  • Dbeyssi A; State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
  • de Boer RE; Nanjing University, Nanjing 210093, People's Republic of China.
  • Dedovich D; Institute of Modern Physics, Lanzhou 730000, People's Republic of China.
Phys Rev Lett ; 128(1): 011803, 2022 Jan 07.
Article en En | MEDLINE | ID: mdl-35061485
Using a data sample corresponding to an integrated luminosity of 2.93 fb^{-1} collected at a center-of-mass energy sqrt[s]=3.773 GeV by the BESIII detector, the decay D^{0}→ωϕ is observed for the first time. The branching fraction is measured to be (6.48±0.96±0.40)×10^{-4} with a significance of 6.3σ, where the first and second uncertainties are statistical and systematic, respectively. An angular analysis reveals that the ϕ and ω mesons from the D^{0}→ωϕ decay are transversely polarized. The 95% confidence level upper limit on longitudinal polarization fraction is set to be less than 0.24, which is inconsistent with current theoretical expectations and challenges our understanding of the underlying dynamics in charm meson decays.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2022 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2022 Tipo del documento: Article Pais de publicación: Estados Unidos