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arXiv 2024年

作者： 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. Chu, X. Cibinetto, G. Coen, S.C. Cossio, F. Cui, J.J. Dai, H.L. Dai, J.P. Dbeyssi, A. de Boer, R.E. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. De Mori, F. Ding, B. Ding, X.X. Ding, Y. Ding, Y. Dong, J. Dong, L.Y. Dong, M.Y. Dong, X. Du, M.C. Du, S.X. Duan, Z.H. Egorov, P. Fan, Y.H.Y. Fan, Y.L. Fang, J. Fang, S.S. Fang, W.X. Fang, Y. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Feng, J.H. Fischer, K. Fritsch, M. Fritzsch, C. Fu, C.D. Fu, J.L. Fu, Y.W. Gao, H. Gao, Y.N. Gao, Yang Garbolino, S. Garzia, I. Ge, P.T. Ge, Z.W. Geng, C. Gersabeck, E.M. Gilman, A. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Gramigna, S. Greco, M. Gu, M.H. Guan, C.Y. Guan, Z.L. Guo, A.Q. Guo, L.B. Guo, M.J. Guo, R.P. Guo, Y.P. Guskov, A. Han, T.T. Han, W.Y. Hao, X.Q. Harris, F.A. He, K.K. He, K.L. Heinsius, F.H.H. Heinz, C.H. Heng, Y.K. Herold, C. Holtmann, T. Hong, P.C. Hou, G.Y. Hou, X.T. Hou, Y.R. Hou, Z.L. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Huang, G.S. Huang, K.X. Huang, L.Q. Huang, X.T. Huang, Y.P. Hussain, T. Hüsken, N. Imoehl, W. Jackson, J. Jaeger, S. Janchiv, S. Jeong, J.H. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Ji, Y.Y. Jia, X.Q. Jia, Z.K. Jiang, H.J. Jiang, P.C. Jiang, S.S. Jiang, T.J. Jiang, X.S. Jiang, Y. Institute of High Energy Physics Beijing100049 China Beihang University Beijing100191 China Beijing Institute of Petrochemical Technology Beijing102617 China Bochum Ruhr-University BochumD-44780 Germany Novosibirsk630090 Russia Carnegie Mellon University PittsburghPA15213 United States Central China Normal University Wuhan430079 China Central South University Changsha410083 China China Center of Advanced Science and Technology Beijing100190 China China University of Geosciences Wuhan430074 China Chung-Ang University Seoul06974 Korea Republic of COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200433 China GSI Helmholtzcentre for Heavy Ion Research GmbH DarmstadtD-64291 Germany Guangxi Normal University Guilin541004 China Hangzhou Normal University Hangzhou310036 China Hebei University Baoding071002 China Helmholtz Institute Mainz Staudinger Weg 18 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University Kaifeng475004 China Henan University of Science and Technology Luoyang471003 China Henan University of Technology Zhengzhou450001 China Huangshan College Huangshan245000 China Hunan Normal University Changsha410081 China Hunan University Changsha410082 China Indian Institute of Technology Madras Chennai600036 India Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN Laboratori Nazionali di Frascati INFN Sezione di Perugia PerugiaI-06100 Italy INFN Laboratori Nazionali di Frascati University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara FerraraI-44122 Italy INFN Sezione di Ferrara University of Ferrara FerraraI-44122 Italy Inner Mongolia University Hohhot010021 China Institute of Modern Physics Lanzhou730000 China Institute of Physics and Technology Peace Avenue 54B Ulaanbaatar13330 Mongolia Instituto de Alta Investigación Universi

Using a sample of (10087 ± 44) × 106 J/ψ events collected by the BESIII detector at the BEPCII collider, a partial-wave analysis of the decay γγφ is performed to investigate the intermediate resonances in J/ψ → γR, R → γφ. Resonances including f1(1285), η(1405), f1(1420), f1(1510), f2(1525), X(1835), f2(1950), f2(2010), f0(2200) and ηc have been detected with statistical significance greater than 5σ. The product branching fractions B(J/ψ → γR, R → γφ) are reported, and the resonance parameters of η(1405) and X(1835) have been precisely determined. It is more probable that η(1405) and X(1835) act as the first - and second - excited states of η′, respectively. The observation of ηc → γφ holds great significance for the in depth study of charmonium properties. No evidence of η(1295), η1(1855) or X(2370) is found. The measured upper limits of relevant BF products do not conflict with theoretical expectations for X(2370) as a pseudoscalar glueball and η1(1855) as a hybrid state. Copyright © 2024, The Authors. All rights reserved.

关键词： Colliding beam accelerators

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Study of the decay ψ(3686) → Σ0Σ¯0φ

arXiv

引用

arXiv 2024年

作者： Ablikim, M. Achasov, M.N. Adlarson, P. 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. Bloms, J. 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. Chu, X. Cibinetto, G. Coen, S.C. Cossio, F. Cui, J.J. Dai, H.L. Dai, J.P. Dbeyssi, A. de Boer, R.E. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. De Mori, F. Ding, B. Ding, Y. Ding, Y. Dong, J. Dong, L.Y. Dong, M.Y. Dong, X. Du, S.X. Duan, Z.H. Egorov, P. Fan, Y.L. Fang, J. Fang, S.S. Fang, W.X. Fang, Y. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Feng, J.H. Fischer, K. Fritsch, M. Fritzsch, C. Fu, C.D. Fu, Y.W. Gao, H. Gao, Y.N. Gao, Yang Garbolino, S. Garzia, I. Ge, P.T. Ge, Z.W. Geng, C. Gersabeck, E.M. Gilman, A. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Gramigna, S. Greco, M. Gu, M.H. Gu, Y.T. Guan, C.Y. Guan, Z.L. Guo, A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Guskov, A. Han, W.Y. Hao, X.Q. Harris, F.A. He, K.K. He, K.L. Heinsius, F.H. Heinz, C.H. Heng, Y.K. Herold, C. Holtmann, T. Hong, P.C. Hou, G.Y. Hou, Y.R. Hou, Z.L. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Huang, G.S. Huang, K.X. Huang, L.Q. Huang, X.T. Huang, Y.P. Hussain, T. Hüsken, N. Imoehl, W. Irshad, M. Jackson, J. Jaeger, S. Janchiv, S. Jeong, J.H. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Ji, Y.Y. Jia, Z.K. Jiang, P.C. Jiang, S.S. Jiang, T.J. Jiang, X.S. Jiang, Y. Jiao, J.B. Jiao, Z. Jin, S. Jin, Y. Jing, M.Q. Johansson, T. Kabana, S. Institute of High Energy Physics Beijing100049 China Beihang University Beijing100191 China Beijing Institute of Petrochemical Technology Beijing102617 China Bochum Ruhr-University BochumD-44780 Germany Carnegie Mellon University PittsburghPA15213 United States Central China Normal University Wuhan430079 China Central South University Changsha410083 China China Center of Advanced Science and Technology Beijing100190 China China University of Geosciences Wuhan430074 China Chung-Ang University Seoul06974 Korea Republic of COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200433 China Novosibirsk630090 Russia GSI Helmholtzcentre for Heavy Ion Research GmbH DarmstadtD-64291 Germany Guangxi Normal University Guilin541004 China Guangxi University Nanning530004 China Hangzhou Normal University Hangzhou310036 China Hebei University Baoding071002 China Helmholtz Institute Mainz Staudinger Weg 18 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 China Henan University of Technology Zhengzhou450001 China Huangshan College Huangshan245000 China Hunan Normal University Changsha410081 China Hunan University Changsha410082 China Indian Institute of Technology Madras Chennai600036 India Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN Sezione di Perugia PerugiaI-06100 Italy University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara INFN Sezione di Ferrara FerraraI-44122 Italy University of Ferrara FerraraI-44122 Italy Institute of Modern Physics Lanzhou730000 China Institute of Physics and Technology Peace Avenue 54B Ulaanbaatar13330 Mongolia Instituto de Alta Investigación Universidad de Tarapacá Casilla 7D Arica Chile Jilin University Changchun130012 China J

Using (27.12 ± 0.14) × 108 ψ(3686) events collected with the BESIII detector operating at the BEPCII collider, the decay ψ(3686) → Σ0Σ¯0φ is observed for the first time with a statistical significance of 7.6σ. Its branching fraction is measured to be (2.64 ± 0.32stat ± 0.12sys) × 10−6, where the first uncertainty is statistical and the second is systematic. In addition, we search for potential intermediate states in the Σ0φ (Σ¯0φ) invariant mass distribution and a possible threshold enhancement in the Σ0Σ¯0 system, but no conclusive evidence of is observed. Copyright © 2024, The Authors. All rights reserved.

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Search for ∆S = 2 nonleptonic hyperon decays Ω− → Σ0π− and Ω− → nK−

arXiv

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arXiv 2024年

作者： Ablikim, M. Achasov, M.N. Adlarson, P. 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. Bloms, J. 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. Chu, X. Cibinetto, G. Coen, S.C. Cossio, F. Cui, J.J. Dai, H.L. Dai, J.P. Dbeyssi, A. de Boer, R.E. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. De Mori, F. Ding, B. Ding, X.X. Ding, Y. Ding, Y. Dong, J. Dong, L.Y. Dong, M.Y. Dong, X. Du, S.X. Duan, Z.H. Egorov, P. Fan, Y.L. Fang, J. Fang, S.S. Fang, W.X. Fang, Y. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Feng, J.H. Fischer, K. Fritsch, M. Fritzsch, C. Fu, C.D. Fu, Y.W. Gao, H. Gao, Y.N. Gao, Yang Garbolino, S. Garzia, I. Ge, P.T. Ge, Z.W. Geng, C. Gersabeck, E.M. Gilman, A. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Gramigna, S. Greco, M. Gu, M.H. Gu, Y.T. Guan, C.Y. Guan, Z.L. Guo, A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Guskov, A. Hajay, X.T. Han, W.Y. Hao, X.Q. Harris, F.A. He, K.K. He, K.L. Heinsius, F.H. Heinz, C.H. Heng, Y.K. Herold, C. Holtmann, T. Hong, P.C. Hou, G.Y. Hou, Y.R. Hou, Z.L. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Huang, G.S. Huang, K.X. Huang, L.Q. Huang, X.T. Huang, Y.P. Hussain, T. Hüsken, N. Imoehl, W. Irshad, M. Jackson, J. Jaeger, S. Janchiv, S. Jeong, J.H. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Ji, Y.Y. Jia, Z.K. Jiang, P.C. Jiang, S.S. Jiang, T.J. Jiang, X.S. Jiang, Y. Jiao, J.B. Jiao, Z. Jin, S. Jin, Y. Jing, M.Q. Johansson, T. Institute of High Energy Physics Beijing100049 China Beihang University Beijing100191 China Beijing Institute of Petrochemical Technology Beijing102617 China Bochum Ruhr-University BochumD-44780 Germany Carnegie Mellon University PittsburghPA15213 United States Central China Normal University Wuhan430079 China Central South University Changsha410083 China China Center of Advanced Science and Technology Beijing100190 China China University of Geosciences Wuhan430074 China Chung-Ang University Seoul06974 Korea Republic of COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200433 China Novosibirsk630090 Russia GSI Helmholtzcentre for Heavy Ion Research GmbH DarmstadtD-64291 Germany Guangxi Normal University Guilin541004 China Guangxi University Nanning530004 China Hangzhou Normal University Hangzhou310036 China Hebei University Baoding071002 China Helmholtz Institute Mainz Staudinger Weg 18 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 China Henan University of Technology Zhengzhou450001 China Huangshan College Huangshan245000 China Hunan Normal University Changsha410081 China Hunan University Changsha410082 China Indian Institute of Technology Madras Chennai600036 India Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN Sezione di Perugia PerugiaI-06100 Italy University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara INFN Sezione di Ferrara FerraraI-44122 Italy University of Ferrara FerraraI-44122 Italy Institute of Modern Physics Lanzhou730000 China Institute of Physics and Technology Peace Avenue 54B Ulaanbaatar13330 Mongolia Instituto de Alta Investigación Universidad de Tarapacá Casilla 7D Arica Chile Jilin University Changchun130012 China J

Using (27.12±0.14)×108 ψ(3686) events collected by the BESIII detector at the center-of-mass energy of √s = 3.686 GeV, we search for the first time for two nonleptonic hyperon decays that change strangeness by two units, Ω− → Σ0π− and Ω− → nK−. No significant signal is observed. The upper limits on their decay branching fractions are determined to be B(Ω− → Σ0π−) −4 and B(Ω− → nK−) −4 at the 90% confidence level. Copyright © 2024, The Authors. All rights reserved.

关键词： Germanium alloys

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Strong and Weak CP Tests in Sequential Decays of Polarized Σ0 Hyperons

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Physical Review Letters 2024年第10期133卷 101902页

作者： M. Ablikim M. N. Achasov P. Adlarson O. Afedulidis X. C. Ai R. Aliberti A. Amoroso Q. An Y. Bai O. Bakina I. Balossino Y. Ban H.-R. Bao V. Batozskaya K. Begzsuren N. Berger M. Berlowski M. Bertani D. Bettoni F. Bianchi E. Bianco A. Bortone I. Boyko R. A. Briere A. Brueggemann H. Cai X. Cai A. Calcaterra G. F. Cao N. Cao S. A. Cetin J. F. Chang G. R. Che G. Chelkov C. Chen C. H. Chen Chao Chen G. Chen H. S. Chen H. Y. Chen M. L. Chen S. J. Chen S. L. Chen S. M. Chen T. Chen X. R. Chen X. T. Chen Y. B. Chen Y. Q. Chen Z. J. Chen Z. Y. Chen S. K. Choi G. Cibinetto F. Cossio J. J. Cui H. L. Dai J. P. Dai A. Dbeyssi R. E. de Boer D. Dedovich C. Q. Deng Z. Y. Deng A. Denig I. Denysenko M. Destefanis F. De Mori B. Ding X. X. Ding Y. Ding J. Dong L. Y. Dong M. Y. Dong X. Dong M. C. Du S. X. Du Y. Y. Duan Z. H. Duan P. Egorov Y. H. Fan J. Fang S. S. Fang W. X. Fang Y. Fang Y. Q. Fang R. Farinelli L. Fava F. Feldbauer G. Felici C. Q. Feng J. H. Feng Y. T. Feng M. Fritsch C. D. Fu J. L. Fu Y. W. Fu H. Gao X. B. Gao Y. N. Gao Yang Gao S. Garbolino I. Garzia L. Ge P. T. Ge Z. W. Ge C. Geng E. M. Gersabeck A. Gilman K. Goetzen L. Gong W. X. Gong W. Gradl S. Gramigna M. Greco M. H. Gu Y. T. Gu C. Y. Guan A. Q. Guo L. B. Guo M. J. Guo R. P. Guo Y. P. Guo A. Guskov J. Gutierrez K. L. Han T. T. Han F. Hanisch X. Q. Hao F. A. Harris K. K. He K. L. He F. H. Heinsius C. H. Heinz Y. K. Heng C. Herold T. Holtmann P. C. Hong G. Y. Hou X. T. Hou Y. R. Hou Z. L. Hou B. Y. Hu H. M. Hu J. F. Hu S. L. Hu T. Hu Y. Hu Z. M. Hu G. S. Huang K. X. Huang L. Q. Huang X. T. Huang Y. P. Huang Y. S. Huang T. Hussain F. Hölzken N. Hüsken N. in der Wiesche J. Jackson S. Janchiv J. H. Jeong Q. Ji Q. P. Ji W. Ji X. B. Ji X. L. Ji Y. Y. Ji X. Q. Jia Z. K. Jia D. Jiang H. B. Jiang P. C. Jiang S. S. Jiang T. J. Jiang X. S. Jiang Y. Jiang J. B. Jiao J. K. Jiao Z. Jiao S. Jin Y. Jin M. Q. Jing X. M. Jing T. Johansson S. Kabana N. Kalantar-Nayestanaki X. L. Kang X. S. Kang M. Kavatsyuk B. C. Ke V. Khachatryan A. Khoukaz R. Kiuchi O. B. Kolcu B. Kopf M. Kuessner Institute of High Energy Physics Beijing 100049 People’s Republic of China Budker Institute of Nuclear Physics SB RAS (BINP) Novosibirsk 630090 Russia Uppsala University Box 516 SE-75120 Uppsala Sweden Bochum Ruhr-University D-44780 Bochum Germany Zhengzhou University Zhengzhou 450001 People’s Republic of China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 D-55099 Mainz Germany University of Turin I-10125 Turin Italy INFN I-10125 Turin Italy University of Science and Technology of China Hefei 230026 People’s Republic of China State Key Laboratory of Particle Detection and Electronics Beijing 100049 Hefei 230026 People’s Republic of China Southeast University Nanjing 211100 People’s Republic of China Joint Institute for Nuclear Research 141980 Dubna Moscow region Russia INFN Sezione di Ferrara I-44122 Ferrara Italy Peking University Beijing 100871 People’s Republic of China University of Chinese Academy of Sciences Beijing 100049 People’s Republic of China National Centre for Nuclear Research Warsaw 02-093 Poland Institute of Physics and Technology Peace Avenue 54B Ulaanbaatar 13330 Mongolia INFN Laboratori Nazionali di Frascati I-00044 Frascati Italy Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA University of Muenster Wilhelm-Klemm-Strasse 9 48149 Muenster Germany Wuhan University Wuhan 430072 People’s Republic of China Turkish Accelerator Center Particle Factory Group Istinye University 34010 Istanbul Turkey Nankai University Tianjin 300071 People’s Republic of China China University of Geosciences Wuhan 430074 People’s Republic of China Soochow University Suzhou 215006 People’s Republic of China Henan University Kaifeng 475004 People’s Republic of China Nanjing University Nanjing 210093 People’s Republic of China North China Electric Power University Beijing 102206 People’s Republic of China Tsinghua University Beijing 100084 People’s Republic of China Institute of Modern Physics Lanzhou 730000 People’s Repu

The J/ψ, ψ(3686)→Σ0Σ¯0 processes and subsequent decays are studied using the world’s largest J/ψ and ψ(3686) data samples collected with the BESIII detector. The parity-violating decay parameters of the decays Σ0→Λγ and Σ¯0→Λ¯γ, αΣ0=−0.0017±0.0021±0.0018 and α¯Σ0=0.0021±0.0020±0.0022, are measured for the first time. The strong CP symmetry is tested in the decays of the Σ0 hyperons for the first time by measuring the asymmetry ACPΣ=αΣ0+α¯Σ0=(0.4±2.9±1.3)×10−3. The weak CP test is performed in the subsequent decays of their daughter particles Λ and Λ¯. Also for the first time, the transverse polarizations of the Σ0 hyperons in J/ψ and ψ(3686) decays are observed with opposite directions, and the ratios between the S-wave and D-wave contributions of the J/ψ, ψ(3686)→Σ0Σ¯0 decays are obtained. These results are crucial to understand the decay dynamics of the charmonium states and the production mechanism of the Σ0−Σ¯0 pairs.

关键词： Electroweak interaction Strong interaction Hyperons CP symmetry

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First Experimental Study of the Purely Leptonic Decay Ds*+→e+νe

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Physical Review Letters 2023年第14期131卷 141802-141802页

作者： M. Ablikim M. N. Achasov P. Adlarson R. Aliberti A. Amoroso M. R. An Q. An Y. Bai O. Bakina I. Balossino Y. Ban V. Batozskaya K. Begzsuren N. Berger M. Berlowski M. Bertani D. Bettoni F. Bianchi E. Bianco J. Bloms A. Bortone I. Boyko R. A. Briere A. Brueggemann H. Cai X. Cai A. Calcaterra G. F. Cao N. Cao S. A. Cetin J. F. Chang T. T. Chang W. L. Chang G. R. Che G. Chelkov 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. Chen W. S. Cheng S. K. Choi X. Chu G. Cibinetto S. C. Coen F. Cossio J. J. Cui H. L. Dai J. P. Dai A. Dbeyssi R. E. de Boer D. Dedovich Z. Y. Deng A. Denig I. Denysenko M. Destefanis F. De Mori B. Ding X. X. Ding Y. Ding J. Dong L. Y. Dong M. Y. Dong X. Dong S. X. Du Z. H. Duan P. Egorov Y. L. Fan J. Fang S. S. Fang W. X. Fang Y. Fang R. Farinelli L. Fava F. Feldbauer G. Felici C. Q. Feng J. H. Feng K. Fischer M. Fritsch C. Fritzsch C. D. Fu J. L. Fu Y. W. Fu H. Gao Y. N. Gao Yang Gao S. Garbolino I. Garzia P. T. Ge Z. W. Ge C. Geng E. M. Gersabeck A. Gilman K. Goetzen L. Gong W. X. Gong W. Gradl S. Gramigna M. Greco M. H. Gu Y. T. Gu C. Y. Guan Z. L. Guan A. Q. Guo L. B. Guo R. P. Guo Y. P. Guo A. Guskov X. T. Hou T. T. Han W. Y. Han X. Q. Hao F. A. Harris K. K. He K. L. He F. H. H. Heinsius C. H. Heinz Y. K. Heng C. Herold T. Holtmann P. C. Hong G. Y. Hou Y. R. Hou Z. L. Hou H. M. Hu J. F. Hu T. Hu Y. Hu G. S. Huang K. X. Huang L. Q. Huang X. T. Huang Y. P. Huang T. Hussain N. Hüsken W. Imoehl M. Irshad J. Jackson S. Jaeger S. Janchiv J. H. Jeong Q. Ji Q. P. Ji X. B. Ji X. L. Ji Y. Y. Ji Z. K. Jia P. C. Jiang S. S. Jiang T. J. Jiang X. S. Jiang Y. Jiang J. B. Jiao Z. Jiao S. Jin Y. Jin M. Q. Jing T. Johansson X. Kui S. Kabana N. Kalantar-Nayestanaki X. L. Kang X. S. Kang R. Kappert M. Kavatsyuk B. C. Ke A. Khoukaz R. Kiuchi R. Kliemt L. Koch O. B. Kolcu B. Kopf M. K. Kuessner A. Kupsc W. Kühn J. J. Lane J. S. Lange P. Larin A. Lavania L. Lavezzi T. T. Lei Z. H. Lei H. Leithoff M. Lellmann T. Lenz C. Li C. H. Li Cheng Institute of High Energy Physics Beijing 100049 People’s Republic of China G.I. Budker Institute of Nuclear Physics SB RAS (BINP) Novosibirsk 630090 Russia Uppsala University Box 516 SE-75120 Uppsala Sweden Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 D-55099 Mainz Germany University of Turin and INFN University of Turin I-10125 Turin Italy INFN I-10125 Turin Italy Liaoning Normal University Dalian 116029 People’s Republic of China University of Science and Technology of China Hefei 230026 People’s Republic of China State Key Laboratory of Particle Detection and Electronics Beijing 100049 Hefei 230026 People’s Republic of China Southeast University Nanjing 211100 People’s Republic of China Joint Institute for Nuclear Research 141980 Dubna Moscow region Russia INFN Sezione di Ferrara I-44122 Ferrara Italy Peking University Beijing 100871 People’s Republic of China National Centre for Nuclear Research Warsaw 02-093 Poland Institute of Physics and Technology Peace Avenue 54B Ulaanbaatar 13330 Mongolia INFN Laboratori Nazionali di Frascati I-00044 Frascati Italy University of Muenster Wilhelm-Klemm-Strasse 9 48149 Muenster Germany Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA Wuhan University Wuhan 430072 People’s Republic of China University of Chinese Academy of Sciences Beijing 100049 People’s Republic of China Near East University Nicosia North Cyprus 99138 Mersin 10 Turkey Xinyang Normal University Xinyang 464000 People’s Republic of China Nankai University Tianjin 300071 People’s Republic of China Soochow University Suzhou 215006 People’s Republic of China Nanjing University Nanjing 210093 People’s Republic of China Tsinghua University Beijing 100084 People’s Republic of China Institute of Modern Physics Lanzhou 730000 People’s Republic of China Jilin University Changchun 130012 People’s Republic of China Hunan University Changsha 410082 People’s Republic of China Chung-Ang University Seoul 06974 Republi

Using 7.33 fb−1 of e+e− collision data taken with the BESIII detector at the BEPCII collider, we report the first experimental study of the purely leptonic decay Ds*+→e+νe. Our data contain a signal of this decay with a statistical significance of 2.9σ. The branching fraction of Ds*+→e+νe is measured to be (2.1−0.9stat+1.2±0.2syst)×10−5, corresponding to an upper limit of 4.0×10−5 at the 90% confidence level. Taking the total width of the Ds*+ [(0.070±0.028) keV] predicted with the radiative Ds*+ decay from the lattice QCD calculation as input, the decay constant of the Ds*+ is determined to be fDs*+=(214−46stat+61±44syst) MeV, corresponding to an upper limit of 354 MeV at the 90% confidence level.

关键词： Branching fraction Leptonic, semileptonic & radiative decays Charmed mesons Form factors

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Partial wave analyses of ψ(3686) → pp¯π0 and ψ(3686) → pp¯η

arXiv

引用

arXiv 2024年

作者： Ablikim, M. Achasov, M.N. Adlarson, P. Afedulidis, O. Ai, X.C. Aliberti, R. Amoroso, A. An, Q. Bai, Y. Bakina, O. Balossino, I. Ban, Y. Bao, H.-R. 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. Che, G.R. Chelkov, G. Chen, C. Chen, C.H. Chen, Chao Chen, G. Chen, H.S. Chen, H.Y. Chen, M.L. Chen, S.J. Chen, S.L. Chen, S.M. Chen, T. Chen, X.R. Chen, X.T. Chen, Y.B. Chen, Y.Q. Chen, Z.J. Chen, Z.Y. Choi, S.K. Cibinetto, G. Cossio, F. Cui, J.J. Dai, H.L. Dai, J.P. Dbeyssi, A. de Boer, R.E. Dedovich, D. Deng, C.Q. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. De Mori, F. Ding, B. Ding, X.X. Ding, Y. Ding, Y. Dong, J. Dong, L.Y. Dong, M.Y. Dong, X. Du, M.C. Du, S.X. Duan, Y.Y. Duan, Z.H. Egorov, P. Fan, Y.H. Fang, J. Fang, J. Fang, S.S. Fang, W.X. Fang, Y. Fang, Y.Q. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Feng, J.H. Feng, Y.T. Fritsch, M. Fu, C.D. Fu, J.L. Fu, Y.W. Gao, H. Gao, X.B. Gao, Y.N. Gao, Yang Garbolino, S. Ge, L. Ge, P.T. Ge, Z.W. Geng, C. Gersabeck, E.M. Gilman, A. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Gramigna, S. Greco, M. Gu, M.H. Gu, Y.T. Guan, C.Y. Guo, A.Q. Guo, L.B. Guo, M.J. Guo, R.P. Guo, Y.P. Guskov, A. Gutierrez, J. Han, K.L. Han, T.T. Hanisch, F. Hao, X.Q. Harris, F.A. He, K.K. He, K.L. Heinsius, F.H. Heinz, C.H. Heng, Y.K. Herold, C. Holtmann, T. Hong, P.C. Hou, G.Y. Hou, X.T. Hou, Y.R. Hou, Z.L. Hu, B.Y. Hu, H.M. Hu, J.F. Hu, S.L. Hu, T. Hu, Y. Huang, G.S. Huang, K.X. Huang, L.Q. Huang, X.T. Huang, Y.P. Huang, Y.S. Hussain, T. Hölzken, F. Hüsken, N. in der Wiesche, N. Jackson, J. Janchiv, S. Jeong, J.H. Ji, Q. Ji, Q.P. Ji, W. Ji, X.B. Ji, X.L. Ji, Y.Y. Jia, X.Q. Institute of High Energy Physics Beijing100049 China Beihang University Beijing100191 China Bochum Ruhr-University BochumD-44780 Germany Novosibirsk630090 Russia Carnegie Mellon University PittsburghPA15213 United States Central China Normal University Wuhan430079 China Central South University Changsha410083 China China Center of Advanced Science and Technology Beijing100190 China China University of Geosciences Wuhan430074 China Chung-Ang University Seoul06974 Korea Republic of COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200433 China GSI Helmholtzcentre for Heavy Ion Research GmbH DarmstadtD-64291 Germany Guangxi Normal University Guilin541004 China Guangxi University Nanning530004 China Hangzhou Normal University Hangzhou310036 China Hebei University Baoding071002 China Helmholtz Institute Mainz Staudinger Weg 18 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University Kaifeng475004 China Henan University of Science and Technology Luoyang471003 China Henan University of Technology Zhengzhou450001 China Huangshan College Huangshan245000 China Hunan Normal University Changsha410081 China Hunan University Changsha410082 China Indian Institute of Technology Madras Chennai600036 India Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN Laboratori Nazionali di Frascati INFN Sezione di Perugia PerugiaI-06100 Italy INFN Laboratori Nazionali di Frascati University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara INFN Sezione di Ferrara FerraraI-44122 Italy INFN Sezione di Ferrara University of Ferrara FerraraI-44122 Italy Inner Mongolia University Hohhot010021 China Institute of Modern Physics Lanzhou730000 China Institute of Physics and Technology Peace Avenue 54B Ulaanbaatar13330 Mongolia Insti

Using a sample of (2712±14)×106 ψ(3686) events collected with the BESIII detector, we perform partial wave analyses of the decays ψ(3686) → pp¯π0 and ψ(3686) → pp¯η. The branching fractions of ψ(3686) → pp¯π0 and ψ(3686) → pp¯η are determined to be (133.9±11.2±2.3)×10−6 or (183.7±13.7± 3.2)×10−6 and (61.5±6.5±1.1)×10−6 or (84.4±6.9±1.4)×10−6, respectively, where the two solutions are caused by an ambiguous phase angle between resonant and continuum processes. Several well-established N∗ states are observed in the pπ0 and pη systems, and the corresponding branching fractions are measured. The ratio of decay widths ΓN(1535)→Nη/ΓN(1535)→Nπ is determined to be 0.99 ± 0.05 ± 0.19. Copyright © 2024, The Authors. All rights reserved.

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Study of the decay D0 → ρ(770)−e+νe

arXiv

引用

arXiv 2024年

作者： Ablikim, M. Achasov, M.N. Adlarson, P. Afedulidis, O. Ai, X.C. Aliberti, R. Amoroso, A. An, Q. Bai, Y. Bakina, O. Balossino, I. Ban, Y. Bao, H.-R. 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. Chai, X.Y. Chang, J.F. Che, G.R. Che, Y.Z. Chelkov, G. Chen, C. Chen, C.H. Chen, Chao Chen, G. Chen, H.S. Chen, H.Y. Chen, M.L. Chen, S.J. Chen, S.L. Chen, S.M. Chen, T. Chen, X.R. Chen, X.T. Chen, Y.B. Chen, Y.Q. Chen, Z.J. Chen, Z.Y. Choi, S.K. Cibinetto, G. Cossio, F. Cui, J.J. Dai, H.L. Dai, J.P. Dbeyssi, A. de Boer, R.E. Dedovich, D. Deng, C.Q. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. De Mori, F. Ding, B. Ding, X.X. Ding, Y. Dong, J. Dong, L.Y. Dong, M.Y. Dong, X. Du, M.C. Du, S.X. Duan, Y.Y. Duan, Z.H. Egorov, P. Fan, Y.H. Fang, J. Fang, S.S. Fang, W.X. Fang, Y. Fang, Y.Q. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Feng, J.H. Feng, Y.T. Fritsch, M. Fu, C.D. Fu, J.L. Fu, Y.W. Gao, H. Gao, X.B. Gao, Y.N. Gao, Yang Garbolino, S. Garzia, I. Ge, L. Ge, P.T. Ge, Z.W. Geng, C. Gersabeck, E.M. Gilman, A. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Gramigna, S. Greco, M. Gu, M.H. Gu, Y.T. Guan, C.Y. Guo, A.Q. Guo, L.B. Guo, M.J. Guo, R.P. Guo, Y.P. Guskov, A. Gutierrez, J. Han, K.L. Han, T.T. Hanisch, F. Hao, X.Q. Harris, F.A. He, K.K. He, K.L. Heinsius, F.H. Heinz, C.H. Heng, Y.K. Herold, C. Holtmann, T. Hong, P.C. Hou, G.Y. Hou, X.T. Hou, Y.R. Hou, Z.L. Hu, B.Y. Hu, H.M. Hu, J.F. Hu, S.L. Hu, T. Hu, Y. Huang, G.S. Huang, K.X. Huang, L.Q. Huang, X.T. Huang, Y.P. Huang, Y.S. Hussain, T. Hölzken, F. Hüsken, N. in der Wiesche, N. Jackson, J. Janchiv, S. Jeong, J.H. Ji, Q. Ji, Q.P. Ji, W. Ji, X.B. Ji, X.L. Ji, Y.Y. Institute of High Energy Physics Beijing100049 China Beihang University Beijing100191 China Bochum Ruhr-University BochumD-44780 Germany Novosibirsk630090 Russia Carnegie Mellon University PittsburghPA15213 United States Central China Normal University Wuhan430079 China Central South University Changsha410083 China China Center of Advanced Science and Technology Beijing100190 China China University of Geosciences Wuhan430074 China Chung-Ang University Seoul06974 Korea Republic of COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200433 China GSI Helmholtzcentre for Heavy Ion Research GmbH DarmstadtD-64291 Germany Guangxi Normal University Guilin541004 China Guangxi University Nanning530004 China Hangzhou Normal University Hangzhou310036 China Hebei University Baoding071002 China Helmholtz Institute Mainz Staudinger Weg 18 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University Kaifeng475004 China Henan University of Science and Technology Luoyang471003 China Henan University of Technology Zhengzhou450001 China Huangshan College Huangshan245000 China Hunan Normal University Changsha410081 China Hunan University Changsha410082 China Indian Institute of Technology Madras Chennai600036 India Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN Laboratori Nazionali di Frascati INFN Sezione di Perugia PerugiaI-06100 Italy INFN Laboratori Nazionali di Frascati University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara INFN Sezione di Ferrara FerraraI-44122 Italy INFN Sezione di Ferrara University of Ferrara FerraraI-44122 Italy Inner Mongolia University Hohhot010021 China Institute of Modern Physics Lanzhou730000 China Institute of Physics and Technology Peace Avenue 54B Ulaanbaatar13330 Mongolia Instituto de Alta Investigación Universida

We present a study of the semileptonic decay D0 → π−π0e+νe using an e+e− annihilation data sample of 7.93 fb−1 collected at the center-of-mass energy of 3.773 GeV with the BESIII detector. The branching fraction of D0 → ρ(770)−e+νe is measured to be (1.439 ± 0.033(stat.) ± 0.027(syst.)) × 10−3, which is a factor 1.6 more precise than previous measurements. By performing an amplitude analysis, we measure the hadronic form-factor ratios of D0 → ρ(770)−e+νe at q2 = 0 assuming the single-pole-dominance parametrization: rV = V (0)/A1(0) = 1.548±0.079(stat.)±0.041(syst.) and r2 = A2(0)/A1(0) = 0.823±0.056(stat.)± 0.026(syst.). Copyright © 2024, The Authors. All rights reserved.

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Observation of the Anomalous Shape of X(1840) in J/ψ→γ3(π+π−) Indicating a Second Resonance near pp¯ Threshold

引用

Physical Review Letters 2024年第15期132卷 151901-151901页

作者： M. Ablikim M. N. Achasov P. Adlarson X. C. Ai R. Aliberti A. Amoroso M. R. An Q. An Y. Bai O. Bakina I. Balossino Y. Ban V. Batozskaya K. Begzsuren N. Berger M. Berlowski M. Bertani D. Bettoni F. Bianchi E. Bianco A. Bortone I. Boyko R. A. Briere A. Brueggemann H. Cai X. Cai A. Calcaterra G. F. Cao N. Cao S. A. Cetin J. F. Chang T. T. Chang W. L. Chang G. R. Che G. Chelkov C. Chen Chao Chen G. Chen H. S. Chen M. L. Chen S. J. Chen S. L. Chen S. M. Chen T. Chen X. R. Chen X. T. Chen Y. B. Chen Y. Q. Chen Z. J. Chen W. S. Cheng S. K. Choi X. Chu G. Cibinetto S. C. Coen F. Cossio J. J. Cui H. L. Dai J. P. Dai A. Dbeyssi R. E. de Boer D. Dedovich Z. Y. Deng A. Denig I. Denysenko M. Destefanis F. De Mori B. Ding X. X. Ding Y. Ding J. Dong L. Y. Dong M. Y. Dong X. Dong M. C. Du S. X. Du Z. H. Duan P. Egorov Y. H. Fan Y. L. Fan J. Fang S. S. Fang W. X. Fang Y. Fang R. Farinelli L. Fava F. Feldbauer G. Felici C. Q. Feng J. H. Feng K. Fischer M. Fritsch C. Fritzsch C. D. Fu J. L. Fu Y. W. Fu H. Gao Y. N. Gao Yang Gao S. Garbolino I. Garzia P. T. Ge Z. W. Ge C. Geng E. M. Gersabeck A. Gilman K. Goetzen L. Gong W. X. Gong W. Gradl S. Gramigna M. Greco M. H. Gu Y. T. Gu C. Y. Guan Z. L. Guan A. Q. Guo L. B. Guo M. J. Guo R. P. Guo Y. P. Guo A. Guskov T. T. Han W. Y. Han X. Q. Hao F. A. Harris K. K. He K. L. He F. H. H. Heinsius C. H. Heinz Y. K. Heng C. Herold T. Holtmann P. C. Hong G. Y. Hou X. T. Hou Y. R. Hou Z. L. Hou H. M. Hu J. F. Hu T. Hu Y. Hu G. S. Huang K. X. Huang L. Q. Huang X. T. Huang Y. P. Huang T. Hussain N. Hüsken W. Imoehl N. in der Wiesche J. Jackson S. Jaeger S. Janchiv J. H. Jeong Q. Ji Q. P. Ji X. B. Ji X. L. Ji Y. Y. Ji X. Q. Jia Z. K. Jia H. J. Jiang P. C. Jiang S. S. Jiang T. J. Jiang X. S. Jiang Y. Jiang J. B. Jiao Z. Jiao S. Jin Y. Jin M. Q. Jing T. Johansson S. Kabana N. Kalantar-Nayestanaki X. L. Kang X. S. Kang M. Kavatsyuk B. C. Ke A. Khoukaz R. Kiuchi R. Kliemt O. B. Kolcu B. Kopf M. Kuessner X. Kui A. Kupsc W. Kühn J. J. Lane P. Larin A. Lavania L. Lavezzi T. T. Lei Z. H. Lei H. Leithoff M. L Institute of High Energy Physics Beijing 100049 People’s Republic of China Budker Institute of Nuclear Physics SB RAS (BINP) Novosibirsk 630090 Russia Uppsala University Box 516 SE-75120 Uppsala Sweden Zhengzhou University Zhengzhou 450001 People’s Republic of China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 D-55099 Mainz Germany University of Turin and INFN University of Turin I-10125 Turin Italy INFN I-10125 Turin Italy Liaoning Normal University Dalian 116029 People’s Republic of China University of Science and Technology of China Hefei 230026 People’s Republic of China State Key Laboratory of Particle Detection and Electronics Beijing 100049 Hefei 230026 People’s Republic of China Southeast University Nanjing 211100 People’s Republic of China Joint Institute for Nuclear Research 141980 Dubna Moscow region Russia INFN Sezione di Ferrara INFN Sezione di Ferrara I-44122 Ferrara Italy Peking University Beijing 100871 People’s Republic of China National Centre for Nuclear Research Warsaw 02-093 Poland Institute of Physics and Technology Peace Avenue 54B Ulaanbaatar 13330 Mongolia INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di Frascati I-00044 Frascati Italy Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA University of Muenster Wilhelm-Klemm-Strasse 9 48149 Muenster Germany Wuhan University Wuhan 430072 People’s Republic of China University of Chinese Academy of Sciences Beijing 100049 People’s Republic of China Turkish Accelerator Center Particle Factory Group Istinye University 34010 Istanbul Turkey Xinyang Normal University Xinyang 464000 People’s Republic of China Nankai University Tianjin 300071 People’s Republic of China Soochow University Suzhou 215006 People’s Republic of China Nanjing University Nanjing 210093 People’s Republic of China North China Electric Power University Beijing 102206 People’s Republic of China Tsinghua University Beijing 100084 People’s Republic of China Insti

Using a sample of (10087±44)×106 J/ψ events, which is about 45 times larger than that was previously analyzed, a further investigation on the J/ψ→γ3(π+π−) decay is performed. A significant distortion at 1.84 GeV/c2 in the line shape of the 3(π+π−) invariant mass spectrum is observed for the first time, which could be resolved by two overlapping resonant structures, X(1840) and X(1880). The new state X(1880) is observed with a statistical significance larger than 10σ. The mass and width of X(1880) are determined to be 1882.1±1.7±0.7 MeV/c2 and 30.7±5.5±2.4 MeV, respectively, which indicates the existence of a pp¯ bound state.

关键词： Hadronic decays Multiquark bound states Exotic mesons Hadrons Mesons Quark model Lepton colliders Particle accelerators

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Model-independent determination of the strong-phase difference between D0 and D¯0 → π+π−π+π− decays

arXiv

引用

arXiv 2024年

作者： Ablikim, M. Achasov, M.N. Adlarson, P. Afedulidis, O. Ai, X.C. Aliberti, R. Amoroso, A. An, Q. Bai, Y. Bakina, O. Balossino, I. Ban, Y. Bao, H.-R. 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. Chai, X.Y. Chang, J.F. Che, G.R. Che, Y.Z. Chelkov, G. Chen, C. Chen, C.H. Chen, Chao Chen, G. Chen, H.S. Chen, H.Y. Chen, M.L. Chen, S.J. Chen, S.L. Chen, S.M. Chen, T. Chen, X.R. Chen, X.T. Chen, Y.B. Chen, Y.Q. Chen, Z.J. Chen, Z.Y. Choi, S.K. Cibinetto, G. Cossio, F. Cui, J.J. Dai, H.L. Dai, J.P. Dbeyssi, A. de Boer, R.E. Dedovich, D. Deng, C.Q. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. De Mori, F. Ding, B. Ding, X.X. Ding, Y. Ding, Y. Dong, J. Dong, L.Y. Dong, M.Y. Dong, X. Du, M.C. Du, S.X. Duan, Y.Y. Duan, Z.H. Egorov, P. Fan, Y.H. Fang, J. Fang, J. Fang, S.S. Fang, W.X. Fang, Y. Fang, Y.Q. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Feng, J.H. Feng, Y.T. Fritsch, M. Fu, C.D. Fu, J.L. Fu, Y.W. Gao, H. Gao, X.B. Gao, Y.N. Gao, Yang Garbolino, S. Garzia, I. Ge, L. Ge, P.T. Ge, Z.W. Geng, C. Gersabeck, E.M. Gilman, A. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Gramigna, S. Greco, M. Gu, M.H. Gu, Y.T. Guan, C.Y. Guo, A.Q. Guo, L.B. Guo, M.J. Guo, R.P. Guo, Y.P. Guskov, A. Gutierrez, J. Han, K.L. Han, T.T. Hanisch, F. Hao, X.Q. Harris, F.A. He, K.K. He, K.L. Heinsius, F.H. Heinz, C.H. Heng, Y.K. Herold, C. Holtmann, T. Hong, P.C. Hou, G.Y. Hou, X.T. Hou, Y.R. Hou, Z.L. Hu, B.Y. Hu, H.M. Hu, J.F. Hu, S.L. Hu, T. Hu, Y. Huang, G.S. Huang, K.X. Huang, L.Q. Huang, X.T. Y.P., Huang Y.S., Huang T., Hussain F., Hölzken N., Hüsken N., in der Wiesche J., Jackson S., Janchiv J.H., Jeong Q., Ji Q.P., Ji W., Ji X.B., Ji Institute of High Energy Physics Beijing100049 China Beihang University Beijing100191 China Bochum Ruhr-University BochumD-44780 Germany Novosibirsk630090 Russia Carnegie Mellon University PittsburghPA15213 United States Central China Normal University Wuhan430079 China Central South University Changsha410083 China China Center of Advanced Science and Technology Beijing100190 China China University of Geosciences Wuhan430074 China Chung-Ang University Seoul06974 Korea Republic of COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200433 China GSI Helmholtzcentre for Heavy Ion Research GmbH DarmstadtD-64291 Germany Guangxi Normal University Guilin541004 China Guangxi University Nanning530004 China Hangzhou Normal University Hangzhou310036 China Hebei University Baoding071002 China Helmholtz Institute Mainz Staudinger Weg 18 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University Kaifeng475004 China Henan University of Science and Technology Luoyang471003 China Henan University of Technology Zhengzhou450001 China Huangshan College Huangshan245000 China Hunan Normal University Changsha410081 China Hunan University Changsha410082 China Indian Institute of Technology Madras Chennai600036 India Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN Laboratori Nazionali di Frascati INFN Sezione di Perugia PerugiaI-06100 Italy INFN Laboratori Nazionali di Frascati University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara INFN Sezione di Ferrara FerraraI-44122 Italy INFN Sezione di Ferrara University of Ferrara FerraraI-44122 Italy Inner Mongolia University Hohhot010021 China Institute of Modern Physics Lanzhou730000 China Institute of Physics and Technology Peace Avenue 54B Ulaanbaatar13330 Mongolia Inst

Measurements of the strong-phase difference between D0 and D¯0 → π+π−π+π− are performed in bins of phase space. The study exploits a sample of quantum-correlated DD¯ mesons collected by the BESIII experiment in e+e− collisions at a center-of-mass energy of 3.773 GeV, corresponding to an integrated luminosity of 2.93 fb−1. Here, D denotes a neutral charm meson in a superposition of flavor eigenstates. The reported results are valuable for measurements of the CP -violating phase γ (also denoted φ3) in B± → DK±, D → π+π−π+π− decays, and the binning schemes are designed to provide good statistical sensitivity to this parameter. The expected uncertainty on γ arising from the precision of the strong-phase measurements, when applied to very large samples of B-meson decays, is around 1.5◦ or 2◦, depending on the binning scheme. The binned strong-phase parameters are combined to give a value of F+4π = 0.746 ± 0.010 ± 0.004 for the CP -even fraction of D0 → π+π−π+π− decays, which is around 30% more precise than the previous best measurement of this quantity. © 2024, CC BY.

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Study of D+ → KS0 K∗(892)+ in D+ → KS0 KS0 π+

arXiv

引用

arXiv 2024年

作者： Ablikim, M. Achasov, M.N. Adlarson, P. Afedulidis, O. Ai, X.C. Aliberti, R. Amoroso, A. An, Q. Bai, Y. Bakina, O. Balossino, I. Ban, Y. Bao, H.-R. 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. Che, G.R. Chelkov, G. Chen, C. Chen, C.H. Chen, Chao Chen, G. Chen, H.S. Chen, H.Y. Chen, M.L. Chen, S.J. Chen, S.L. Chen, S.M. Chen, T. Chen, X.R. Chen, X.T. Chen, Y.B. Chen, Y.Q. Chen, Z.J. Chen, Z.Y. Choi, S.K. Cibinetto, G. Cossio, F. Cui, J.J. Dai, H.L. Dai, J.P. Dbeyssi, A. de Boer, R.E. Dedovich, D. Deng, C.Q. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. De Mori, F. Ding, B. Ding, X.X. Ding, Y. Ding, Y. Dong, J. Dong, L.Y. Dong, M.Y. Dong, X. Du, M.C. Du, S.X. Duan, Y.Y. Duan, Z.H. Egorov, P. Fan, Y.H. Fang, J. Fang, J. Fang, S.S. Fang, W.X. Fang, Y. Fang, Y.Q. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Feng, J.H. Feng, Y.T. Fritsch, M. Fu, C.D. Fu, J.L. Fu, Y.W. Gao, H. Gao, X.B. Gao, Y.N. Gao, Yang Garbolino, S. Garzia, I. Ge, L. Ge, P.T. Ge, Z.W. Geng, C. Gersabeck, E.M. Gilman, A. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Gramigna, S. Greco, M. Gu, M.H. Gu, Y.T. Guan, C.Y. Guo, A.Q. Guo, L.B. Guo, M.J. Guo, R.P. Guo, Y.P. Guskov, A. Gutierrez, J. Han, K.L. Han, T.T. Hanisch, F. Hao, X.Q. Harris, F.A. He, K.K. He, K.L. Heinsius, F.H. Heinz, C.H. Heng, Y.K. Herold, C. Holtmann, T. Hong, P.C. Hou, G.Y. Hou, X.T. Hou, Y.R. Hou, Z.L. Hu, B.Y. Hu, H.M. Hu, J.F. Hu, S.L. Hu, T. Hu, Y. Huang, G.S. Huang, K.X. Huang, L.Q. Huang, X.T. Huang, Y.P. Huang, Y.S. Hussain, T. Hölzken, F. Hüsken, N. in der Wiesche, N. Jackson, J. Janchiv, S. Jeong, J.H. Ji, Q. Ji, Q.P. Ji, W. Ji, X.B. Ji, X.L. Institute of High Energy Physics Beijing100049 China Beihang University Beijing100191 China Bochum Ruhr-University BochumD-44780 Germany Novosibirsk630090 Russia Carnegie Mellon University PittsburghPA15213 United States Central China Normal University Wuhan430079 China Central South University Changsha410083 China China Center of Advanced Science and Technology Beijing100190 China China University of Geosciences Wuhan430074 China Chung-Ang University Seoul06974 Korea Republic of COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200433 China GSI Helmholtzcentre for Heavy Ion Research GmbH DarmstadtD-64291 Germany Guangxi Normal University Guilin541004 China Guangxi University Nanning530004 China Hangzhou Normal University Hangzhou310036 China Hebei University Baoding071002 China Helmholtz Institute Mainz Staudinger Weg 18 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University Kaifeng475004 China Henan University of Science and Technology Luoyang471003 China Henan University of Technology Zhengzhou450001 China Huangshan College Huangshan245000 China Hunan Normal University Changsha410081 China Hunan University Changsha410082 China Indian Institute of Technology Madras Chennai600036 India Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN Laboratori Nazionali di Frascati INFN Sezione di Perugia PerugiaI-06100 Italy INFN Laboratori Nazionali di Frascati University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara INFN Sezione di Ferrara FerraraI-44122 Italy INFN Sezione di Ferrara University of Ferrara FerraraI-44122 Italy Inner Mongolia University Hohhot010021 China Institute of Modern Physics Lanzhou730000 China Institute of Physics and Technology Peace Avenue 54B Ulaanbaatar13330 Mongolia Inst

Using a data sample of e+e− collisions corresponding to an integrated luminosity of 7.93 fb−1 collected with the BESIII detector at the center-of-mass energy 3.773 GeV, we perform the first amplitude analysis of the decay D+ → KS0KS0π+. The absolute branching fraction of D+ → KS0KS0π+ is measured to be (2.97±0.09stat.±0.05syst.)×10−3. The dominant intermediate process is D+ → KS0K∗(892)+, whose branching fraction is determined to be (8.72±0.28stat.±0.15syst.)×10−3, including all the K∗(892)+ decays. Copyright © 2024, The Authors. All rights reserved.

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