检索结果-内蒙古大学图书馆

arXiv 2020年

作者： Ablikim, M. Achasov, M.N. Adlarson, P. Ahmed, S. Albrecht, M. Amoroso, A. An, Q. Anita Bai, Y. Bakina, O. Baldini Ferroli, R. Balossino, I. Ban, Y. Begzsuren, K. Bennett, J.V. Berger, N. Bertani, M. Bettoni, D. Bianchi, F. Biernat, J. 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. Cheng, W. Cibinetto, G. Cossio, F. Cui, X.F. Dai, H.L. Dai, J.P. Dai, X.C. Dbeyssi, A. de Boer, R.B. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. de Mori, F. Ding, Y. Dong, C. Dong, J. Dong, L.Y. Dong, M.Y. Du, S.X. Fang, J. Fang, S.S. Fang, Y. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Fritsch, M. Fu, C.D. Fu, Y. Gao, X.L. Gao, Y. Gao, Y. Gao, Y.G. Garzia, I. Gersabeck, E.M. Gilman, A. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Greco, M. Gu, L.M. Gu, M.H. Gu, S. Gu, Y.T. Guan, C.Y. Guo, A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Guo, Y.P. Guskov, A. Han, S. Han, T.T. Han, T.Z. Hao, X.Q. Harris, F.A. He, K.L. Heinsius, F.H. Held, T. Heng, Y.K. Himmelreich, M. Holtmann, T. Hou, Y.R. Hou, Z.L. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Huang, G.S. Huang, L.Q. Huang, X.T. Huang, Z. Huesken, N. Hussain, T. Ikegami Andersson, W. Imoehl, W. Irshad, M. Jaeger, S. Janchiv, S. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Jiang, H.B. Jiang, X.S. Jiang, X.Y. Jiao, J.B. Jiao, Z. Jin, S. Jin, Y. Johansson, T. Kalantar-Nayestanaki, N. Kang, X.S. Kappert, R. Kavatsyuk, M. Ke, B.C. Keshk, I.K. Khoukaz, A. Kiese, P. Kiuchi, R. Kliemt, R. Koch, L. Kolcu, O.B. Kopf, B. Kuemmel, M. Kuessner, M. Kupsc, A. Kurth, M.G. Kühn, W. Lane, J.J. Lange, J.S. Larin, P. Lavezzi, L. Leithoff, H. Lellmann, M. Lenz, T. Li, C. Li, C.H. Li, Cheng Li, D.M. Li, F. Li, G. 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 China Center of Advanced Science and Technology Beijing100190 China COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200443 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 Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 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 and University of Perugia PerugiaI-06100 Italy 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 Ave. 54B Ulaanbaatar13330 Mongolia Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Joint Institute for Nuclear Research Dubna Moscow region141980 Russia Justus-Liebig-Universitaet Giessen II. Physikalisches Institut Heinrich-Buff-Ring 16 GiessenD-35392 Germany KVI-CART University of Groningen GroningenNL-9747 AA Netherlands Lanzhou University Lanzhou730000 China Liaoning Normal University Dalian116029 China Liaoning University Shenyang11

We report a measurement of the observed cross sections of the inclusive J/ψ production in e+e− → J/ψX based on 3.21 fb−1 of data accumulated at energies from 3.645 to 3.891 GeV with the BESIII detector operated at the BEPCII collider. The energy-dependent lineshape obtained from the measured cross sections cannot be well described by two Breit-Wigner (BW) amplitudes of the expected decays ψ(3686) → J/ψX and ψ(3770) → J/ψX. Instead it can be better described with three BW amplitudes of the decays ψ(3686) → J/ψX, R(3760) → J/ψX and R(3790) → J/ψX with two distinct structures referred to as R(3760) and R(3790). Under this assumption, we extracted their masses, total widths, and the product of the leptonic width and decay branching fractions to be MR(3760) = 3761.7 ± 2.2 ± 1.2 MeV/c2, ΓtotR(3760) = 6.7 ± 11.1 ± 1.1 MeV, ΓeeR(3760)B[R(3760) → J/ψX] = (4.0 ± 4.3 ± 1.2) eV, MR(3790) = 3784.7 ± 5.7 ± 1.6 MeV/c2, ΓtotR(3790) = 31.6 ± 11.9 ± 3.2 MeV, ΓeeR(3790)B[R(3790) → J/ψX] = (18.1±10.3±4.7) eV, where the first uncertainties are statistical and second systematic. © 2020, CC BY.

关键词： Germanium alloys

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Observation of a cross-section enhancement near mass threshold in e+e− → ΛΛ¯

arXiv

引用

arXiv 2017年

作者： Ablikim, M. Achasov, M.N. Ahmed, S. Ai, X.C. Albayrak, O. Albrecht, M. Ambrose, D.J. Amoroso, A. An, F.F. An, Q. Bai, J.Z. Bakina, O. Baldini Ferroli, R. Ban, Y. Bennett, D.W. Bennett, J.V. Berger, N. Bertani, M. Bettoni, D. Bian, J.M. Bianchi, F. Boger, E. Boyko, I. Briere, R.A. Cai, H. Cai, X. Cakir, O. Calcaterra, A. Cao, G.F. Cetin, S.A. Chai, J. Chang, J.F. Chelkov, G. Chen, G. Chen, H.S. Chen, J.C. Chen, M.L. Chen, S. Chen, S.J. Chen, X. Chen, X.R. Chen, Y.B. Chu, X.K. Cibinetto, G. Dai, H.L. Dai, J.P. Dbeyssi, A. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. de Mori, F. Ding, Y. Dong, C. Dong, J. Dong, L.Y. Dong, M.Y. Dou, Z.L. Du, S.X. Duan, P.F. Fan, J.Z. Fang, J. Fang, S.S. Fang, X. Fang, Y. Farinelli, R. Fava, L. Fegan, S. Feldbauer, F. Feng, C.Q. Fioravanti, E. Fritsch, M. Fu, C.D. Gao, Q. Gao, X.L. Gao, Y. Gao, Z. Garzia, I. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Greco, M. Gu, M.H. Gu, Y.T. Guan, Y.H. Guo, A.Q. Guo, L.B. Guo, R.P. Guo, Y. Guo, Y.P. Haddadi, Z. Hafner, A. Han, S. Hao, X.Q. Harris, F.A. He, K.L. Heinsius, F.H. Held, T. Heng, Y.K. Holtmann, T. Hou, Z.L. Hu, C. Hu, H.M. Hu, T. Hu, Y. Huang, G.S. Huang, J.S. Huang, X.T. Huang, X.Z. Huang, Z.L. Hussain, T. Ikegami Andersson, W. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Jiang, L.W. Jiang, X.S. Jiang, X.Y. Jiao, J.B. Jiao, Z. Jin, D.P. Jin, S. Johansson, T. Julin, A. Kalantar-Nayestanaki, N. Kang, X.L. Kang, X.S. Kavatsyuk, M. Ke, B.C. Kiese, P. Kliemt, R. Kloss, B. Kolcu, O.B. Kopf, B. Kornicer, M. Kupsc, A. Kühn, W. Lange, J.S. Lara, M. Larin, P. Leithoff, H. Leng, C. Li, C. Li, Cheng Li, D.M. Li, F. Li, F.Y. Li, G. Li, H.B. Li, H.J. Li, J.C. Li, Jin Li, K. Li, K. Li, Lei Li, P.L. Li, P.R. Li, Q.Y. Li, T. Li, W.D. Li, W.G. Li, X.L. Li, X.N. Li, X.Q. Li, Y.B. Li, Z.B. Liang, H. 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 China Center of Advanced Science and Technology Beijing100190 China COMSATS Institute of Information Technology Lahore Defence Road Off Raiwind Road Lahore54000 Pakistan 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 Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 China Huangshan College Huangshan245000 China Hunan University Changsha410082 China Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN and University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara FerraraI-44122 Italy University of Ferrara FerraraI-44122 Italy Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Joint Institute for Nuclear Research Dubna Moscow region141980 Russia Justus-Liebig-Universitaet Giessen II. Physikalisches Institut Heinrich-Buff-Ring 16 GiessenD-35392 Germany KVI-CART University of Groningen GroningenNL-9747 AA Netherlands Lanzhou University Lanzhou730000 China Liaoning University Shenyang110036 China Nanjing Normal University Nanjing210023 China Nanjing University Nanjing210093 China Nankai University Tianjin300071 China Peking University Beijing100871 China Seoul National University Seoul151-747 Korea Republic of Shandong University Jinan250100 China Shanghai Jiao Tong University Shang

The process e+e− → ΛΛ¯ is studied using data samples at √s = 2.2324, 2.400, 2.800 and 3.080 GeV collected with the BESIII detector operating at the BEPCII collider. The Born cross section is measured at √s=2.2324 GeV, which is 1.0 MeV above the ΛΛ¯ mass threshold, to be 305±45+66−36 pb, where the first uncertainty is statistical and the second systematic. The cross section near threshold is larger than that expected from theory, which predicts the cross section to vanish at threshold. The Born cross sections at √s=2.400, 2.800 and 3.080 GeV are measured and found to be consistent with previous experimental results, but with improved precision. Finally, the corresponding effective electromagnetic form factors of Λ are deduced. Copyright © 2017, The Authors. All rights reserved.

关键词： Germanium alloys

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Luminosity measurements for the R scan experiment at BESIII

arXiv

引用

arXiv 2017年

作者： Ablikim, M. Achasov, M.N. Ahmed, S. Ai, X.C. Albayrak, O. Albrecht, M. Ambrose, D.J. Amoroso, A. An, F.F. An, Q. Bai, J.Z. Bakina, O. Baldini Ferroli, R. Ban, Y. Bennett, D.W. Bennett, J.V. Berger, N. Bertani, M. Bettoni, D. Bian, J.M. Bianchi, F. Boger, E. Boyko, I. Briere, R.A. Cai, H. Cai, X. Cakir, O. Calcaterra, A. Cao, G.F. Cetin, S.A. Chai, J. Chang, J.F. Chelkov, G. Chen, G. Chen, H.S. Chen, J.C. Chen, M.L. Chen, S. Chen, S.J. Chen, X. Chen, X.R. Chen, Y.B. Chu, X.K. Cibinetto, G. Dai, H.L. Dai, J.P. Dbeyssi, A. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. de Mori, F. Ding, Y. Dong, C. Dong, J. Dong, L.Y. Dong, M.Y. Dou, Z.L. Du, S.X. Duan, P.F. Fan, J.Z. Fang, J. Fang, S.S. Fang, X. Fang, Y. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Fioravanti, E. Fritsch, M. Fu, C.D. Gao, Q. Gao, X.L. Gao, Y. Gao, Z. Garzia, I. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Greco, M. Gu, M.H. Gu, Y.T. Guan, Y.H. Guo, A.Q. Guo, L.B. Guo, R.P. Guo, Y. Guo, Y.P. Haddadi, Z. Hafner, A. Han, S. Hao, X.Q. Harris, F.A. He, K.L. Heinsius, F.H. Held, T. Heng, Y.K. Holtmann, T. Hou, Z.L. Hu, C. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Huang, G.S. Huang, J.S. Huang, X.T. Huang, X.Z. Huang, Z.L. Hussain, T. Ikegami Andersson, W. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Jiang, L.W. Jiang, X.S. Jiang, X.Y. Jiao, J.B. Jiao, Z. Jin, D.P. Jin, S. Johansson, T. Julin, A. Kalantar-Nayestanaki, N. Kang, X.L. Kang, X.S. Kavatsyuk, M. Ke, B.C. Kiese, P. Kliemt, R. Kloss, B. Kolcu, O.B. Kopf, B. Kornicer, M. Kupsc, A. Kühn, W. Lange, J.S. Lara, M. Larin, P. Leithoff, H. Leng, C. Li, C. Li, Cheng Li, D.M. Li, F. Li, F.Y. Li, G. Li, H.B. Li, H.J. Li, J.C. Li, Jin Li, K. Li, K. Li, Lei Li, P.R. Li, Q.Y. Li, T. Li, W.D. Li, W.G. Li, X.L. Li, X.N. Li, X.Q. Li, Y.B. Li, Z.B. Liang, H. Institute of High Energy Physics Beijing100049 China Beihang University Beijing100191 China Beijing Institute of Petrochemical Technology Beijing102617 Korea Republic of Bochum Ruhr-University BochumD-44780 Germany Carnegie Mellon University PittsburghPA15213 United States Central China Normal University Wuhan430079 China China Center of Advanced Science and Technology Beijing100190 China COMSATS Institute of Information Technology Lahore Defence Road Off Raiwind Road Lahore54000 Pakistan 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 Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 China Huangshan College Huangshan245000 Korea Republic of Hunan University Changsha410082 China Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN and University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara FerraraI-44122 Italy University of Ferrara FerraraI-44122 Italy Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Joint Institute for Nuclear Research Dubna Moscow region141980 Russia Justus-Liebig-Universitaet Giessen II. Physikalisches Institut Heinrich-Buff-Ring 16 GiessenD-35392 Germany KVI-CART University of Groningen GroningenNL-9747 AA Netherlands Lanzhou University Lanzhou730000 China Liaoning University Shenyang110036 China Nanjing Normal University Nanjing210023 China Nanjing University Nanjing210093 China Nankai University Tianjin300071 China Peking University Beijing100871 China Seoul National University Seoul151-747 China Shandong University Jinan250100 China Shanghai Jiao Tong Univ

By analyzing the large-angle Bhabha scattering events e+e− → (γ)e+e− and diphoton events e+e− → γγ for the data sets collected at center-of-mass (c.m.) energies between 2.2324 and 4.5900 GeV (131 energy points in total) with the upgraded Beijing Spectrometer (BESIII) at the Beijing Electron-Positron Collider (BEPCII), the integrated luminosities have been measured at the different c.m. energies, individually. The results are the important inputs for R value and J/ψ resonance parameter measurements. Copyright © 2017, The Authors. All rights reserved.

关键词： Luminance

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Amplitude analysis of D0 → K−π+π+π−

arXiv

引用

arXiv 2017年

作者： Ablikim, M. Achasov, M.N. Ahmed, S. 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. Berger, N.B. Bertani, M. Bettoni, D. Bian, J.M. Bianchi, F. Boger, E. 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. Chen, S.J. Chen, X. Chen, X.R. Chen, Y.B. Cheng, H.P. Chu, X.K. Cibinetto, G. Dai, H.L. Dai, J.P. Dbeyssi, A. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. de Mori, F. Ding, Y. Dong, C. Dong, J. Dong, L.Y. Dong, M.Y. Dou, Z.L. Du, S.X. Duan, P.F. Fan, J.Z. Fang, J. Fang, S.S. Fang, X. Fang, Y. Farinelli, R. Fava, L. Fedorov, O. Feldbauer, F. Felici, G. Feng, C.Q. Fritsch, M. Fu, C.D. Gao, Q. Gao, X.L. Gao, X.Y. Gao, Y. Gao, Z. Garzia, I. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Greco, M. Gu, M.H. Gu, Y.T. Guan, Y.H. Guo, A.Q. Guo, L.B. Guo, R.P. Guo, Y. Guo, Y.P. Haddadi, Z. Hafner, A. Han, S. Hao, X.Q. Harris, F.A. He, K.L. Heinsius, F.H. Held, T. Heng, Y.K. Holtmann, T. Hou, Z.L. Hu, C. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Huang, G.S. Huang, J.S. Huang, X.T. Huang, X.Z. Huang, Y. Huang, Z.L. Hussain, T. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Jiang, L.W. Jiang, X.S. Jiang, X.Y. Jiao, J.B. Jiao, Z. Jin, D.P. Jin, S. Johansson, T. Julin, A. Kalantar-Nayestanaki, N. Kang, X.L. Kang, X.S. Kavatsyuk, M. Ke, B.C. Kiese, P. Kliemt, R. Kloss, B. Kolcu, O.B. Kopf, B. Kornicer, M. Kupsc, A. Kühn, W. Lange, J.S. Lara, M. Larin, P. Leithoff, H. Li, C. Li, Cheng Li, D.M. Li, F. Li, F.Y. Li, G. Li, H.B. Li, H.J. Li, J.C. Li, Jin Li, K. Li, K. Li, Lei Li, P.R. Li, Q.Y. Li, T. Li, W.D. Li, W.G. Li, X.L. Li, X.M. Li, X.N. Li, X.Q. Li, Y.B. Li, Z.B. Liang, H. Liang, J.J. Liang, Y.F. 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 China Center of Advanced Science and Technology Beijing100190 China COMSATS Institute of Information Technology Lahore Defence Road Off Raiwind Road Lahore54000 Pakistan 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 Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 China Huangshan College Huangshan245000 China Hunan University Changsha410082 China Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN and University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara FerraraI-44122 Italy University of Ferrara FerraraI-44122 Italy Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Joint Institute for Nuclear Research Dubna Moscow region141980 Russia Justus-Liebig-Universitaet Giessen II. Physikalisches Institut Heinrich-Buff-Ring 16 GiessenD-35392 Germany KVI-CART University of Groningen GroningenNL-9747 AA Netherlands Lanzhou University Lanzhou730000 China Liaoning University Shenyang110036 China Nanjing Normal University Nanjing210023 China Nanjing University Nanjing210093 China Nankai University Tianjin300071 China Peking University Beijing100871 China Seoul National University Seoul151-747 Korea Republic of Shandong University Jinan250100 China Shanghai Jiao Tong University Shang

We present an amplitude analysis of the decay D0 → K−π+π+π− based on a data sample of 2.93 fb−1 acquired by the BESIII detector at the ψ(3770) resonance. With a nearly background free sample of about 16000 events, we investigate the substructure of the decay and determine the relative fractions and the phases among the different intermediate processes. Our amplitude model includes the two-body decays D0 → K¯ ∗0ρ0, D0 → K−a+1 (1260) and D0 → K1−(1270)π+, the three-body decays D0 → K¯ ∗0π+π− and D0 → K−π+ρ0, as well as the four-body nonresonant decay D0 → K−π+π+π−. The dominant intermediate process is D0 → K−a+1 (1260), accounting for a fit fraction of 54.6%. Copyright © 2017, The Authors. All rights reserved.

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Ultrasmall Copper Nanoclusters in Zirconium Metal-Organic Frameworks for the Photoreduction of CO2

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Angewandte Chemie 2022年第43期134卷

作者： Dr. Shan Dai Dr. Takashi Kajiwara Dr. Miyuki Ikeda Ignacio Romero-Muñiz Dr. Gilles Patriarche Dr. Ana E. Platero-Prats Dr. Alexandre Vimont Dr. Marco Daturi Dr. Antoine Tissot Dr. Qiang Xu Dr. Christian Serre Institut des Matériaux Poreux de Paris Ecole Normale Supérieure ESPCI Paris CNRS PSL University 75005 Paris France Normandie Univ. ENSICAEN UNICAEN CNRS Laboratoire Catalyse et Spectrochimie 14000 Caen France AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL) National Institute of Advanced Industrial Science and Technology (AIST) Sakyo-ku Kyoto 606-8501 Japan Institute for Integrated Cell-Material Sciences (iCeMS) Kyoto University Sakyo-ku Kyoto 606-8501 Japan Departamento de Química Inorgánica Facultad de Ciencias Universidad Autónomade Madrid Campus de Cantoblanco 28049 Madrid Spain Université Paris-Saclay CNRS Centre de Nanosciences et de Nanotechnologies 91120 Palaiseau France Condensed Matter Physics Center (IFIMAC) Universidad Autónoma de Madrid Campus de Cantoblanco 28049 Madrid Spain Instituto de Investigación Avanzada en Ciencias Químicas de la UAM Universidad Autónoma de Madrid Campus de Cantoblanco 28049 Madrid Spain Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials (SKLPM) Department of Chemistry and Department of Materials Science and Engineering Southern University of Science and Technology (SUSTech) Nanshan Shenzhen Guangdong 518055 China

Encapsulating ultrasmall Cu nanoparticles inside Zr-MOFs to form core–shell architecture is very challenging but of interest for CO 2 reduction. We report for the first time the incorporation of ultrasmall Cu NCs into a series of benchmark Zr-MOFs, without Cu NCs aggregation, via a scalable room temperature fabrication approach. The Cu NCs@MOFs core–shell composites show much enhanced reactivity in comparison to the Cu NCs confined in the pore of MOFs, regardless of their very similar intrinsic properties at the atomic level. Moreover, introducing polar groups on the MOF structure can further improve both the catalytic reactivity and selectivity. Mechanistic investigation reveals that the Cu I sites located at the interface between Cu NCs and support serve as the active sites and efficiently catalyze CO 2 photoreduction. This synergetic effect may pave the way for the design of low-cost and efficient catalysts for CO 2 photoreduction into high-value chemical feedstock.

关键词： CO2 Reduction Core-Shell composites Photocatalysis Zr-MOFs In Situ Spectroscopies

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Evidence of a resonant structure in the e+e− → π+D0D∗− cross section between 4.05 and 4.60 GeV

arXiv

引用

arXiv 2018年

作者： Ablikim, M. Achasov, M.N. Ahmed, S. Albrecht, M. Amoroso, A. An, F.F. An, Q. Bai, Y. Bakina, O. Baldini Ferroli, R. Ban, Y. Bennett, D.W. Bennett, J.V. Berger, N. Bertani, M. Bettoni, D. Bian, J.M. Bianchi, F. Boger, E. Boyko, I. Briere, R.A. Cai, H. Cai, X. Cakir, O. Calcaterra, A. Cao, G.F. Cetin, S.A. Chai, J. Chang, J.F. Chelkov, G. Chen, G. Chen, H.S. Chen, J.C. Chen, M.L. Chen, P.L. Chen, S.J. Chen, Y.B. Cibinetto, G. Dai, H.L. Dai, J.P. Dbeyssi, A. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. de Mori, F. Ding, Y. Dong, C. Dong, J. Dong, L.Y. Dong, M.Y. Dou, Z.L. Du, S.X. Duan, P.F. Fan, J.Z. Fang, J. Fang, S.S. Fang, X. Fang, Y. Farinelli, R. Fava, L. Fegan, S. Feldbauer, F. Felici, G. Feng, C.Q. Fritsch, M. Fu, C.D. Gao, Q. Gao, X.L. Gao, Y. Gao, Y.G. Gao, Z. Garzia, I. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Greco, M. Gu, M.H. Gu, S. Gu, Y.T. Guo, A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Haddadi, Z. Han, S. Hao, X.Q. Harris, F.A. He, K.L. Heinsius, F.H. Held, T. Heng, Y.K. Holtmann, T. Hou, Z.L. Hu, C. Hu, H.M. Hu, T. Hu, Y. Huang, G.S. Huang, J.S. Huang, X.T. Huang, X.Z. Huang, Z.L. Hussain, T. Ikegami Andersson, W. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Jiang, X.S. Jiang, X.Y. Jiao, J.B. Jiao, Z. Jin, D.P. Jin, S. Jin, Y. Johansson, T. Julin, A. Kalantar-Nayestanaki, N. Kang, X.L. Kang, X.S. Kavatsyuk, M. Ke, B.C. Khan, T. Khoukaz, A. Kiese, P. Kliemt, R. Koch, L. Kolcu, O.B. Kopf, B. Kornicer, M. Kuemmel, M. Kuessner, M. Kuhlmann, M. Kupsc, A. Kühn, W. Lange, J.S. Lara, M. Larin, P. Lavezzi, L. Leiber, S. Leithoff, H. Leng, C. Li, C. Li, Cheng Li, D.M. Li, F. Li, F.Y. Li, G. Li, H.B. Li, H.J. Li, J.C. Li, K.J. Li, Kang Li, Ke Li, Lei Li, P.L. Li, P.R. Li, Q.Y. Li, T. Li, W.D. Li, W.G. Li, X.L. Li, X.N. Li, X.Q. Li, Z.B. Liang, H. Liang, Y.F. 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 China Center of Advanced Science and Technology Beijing100190 China COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan 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 Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 China Huangshan College Huangshan245000 China Hunan University Changsha410082 China Indiana University BloomingtonIN47405 United States INFN Laboratori Nazionali di Frascati FrascatiI-00044 Italy INFN and University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara FerraraI-44122 Italy University of Ferrara FerraraI-44122 Italy Institute of Physics and Technology Peace Ave. 54B Ulaanbaatar13330 Mongolia Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Joint Institute for Nuclear Research Dubna Moscow region141980 Russia Justus-Liebig-Universitaet Giessen II. Physikalisches Institut Heinrich-Buff-Ring 16 GiessenD-35392 Germany KVI-CART University of Groningen GroningenNL-9747 AA Netherlands Lanzhou University Lanzhou730000 China Liaoning University Shenyang110036 China Nanjing Normal University Nanjing210023 China Nanjing University Nanjing210093 China Nankai University Tianjin300071 China Peking University Beijing100871 China Seoul National University Seoul151-747 Korea Republic of Shan

The cross section of the process e+e− → π+D0D∗− for center-of-mass energies from 4.05 to 4.60 GeV is measured precisely using data samples collected with the BESIII detector operating at the BEPCII storage ring. Two enhancements are clearly visible in the cross section around 4.23 and 4.40 GeV. Using several models to describe the dressed cross section yields stable parameters for the first enhancement, which has a mass of 4228.6±4.1±6.3 MeV/c2 and a width of 77.0±6.8±6.3 MeV, where the first uncertainties are statistical and the second ones are systematic. Our resonant mass is consistent with previous observations of the Y (4220) state and the theoretical prediction of a DD¯1(2420) molecule. This result is the first observation of Y (4220) associated with an open-charm final state. Fits with three resonance functions with additional Y (4260), Y (4320), Y (4360), ψ(4415), or a new resonance, do not show significant contributions from either of these resonances. The second enhancement is not from a single known resonance. It could contain contributions from ψ(4415) and other resonances, and a detailed amplitude analysis is required to better understand this enhancement. Copyright © 2018, The Authors. All rights reserved.

关键词： Resonance

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Search for the decay η′ → γγη

arXiv

引用

arXiv 2019年

作者： Ablikim, M. Achasov, M.N. Adlarson, P. Ahmed, S. Albrecht, M. Alekseev, M. Amoroso, A. An, F.F. An, Q. Bai, Y. Bakina, O. Ferroli, R. Baldini Ban, Y. Begzsuren, K. Bennett, J.V. Berger, N. Bianchi, F. Biernat, J. Bloms, J. Boyko, I. Briere, R.A. Cai, H. Cai, X. Cao, G.F. Cao, N. Cetin, S.A. Chai, J. Chang, J.F. Chang, W.L. Chelkov, G. Chen, D.Y. Chen, G. Chen, H.S. Chen, J.C. Chen, M.L. Chen, S.J. Chen, Y.B. Cheng, W. Cibinetto, G. Cossio, F. Cui, X.F. Dai, H.L. Dai, J.P. Dai, X.C. Dbeyssi, A. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. de Mori, F. Ding, Y. Dong, C. Dong, J. Dong, L.Y. Dong, M.Y. Dou, Z.L. Du, S.X. Fan, J.Z. Fang, J. Fang, S.S. Fang, Y. Farinelli, R. Fava, L. Feldbauer, F. Feng, C.Q. Fritsch, M. Fu, C.D. Fu, Y. Gao, Q. Gao, X.L. Gao, Y. Gao, Y. Gao, Y.G. Gao, Z. Garillon, B. Gersabeck, E.M. Gilman, A. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Greco, M. Gu, L.M. Gu, M.H. Gu, S. Gu, Y.T. Guo, A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Guskov, A. Han, S. Hao, X.Q. Harris, F.A. He, K.L. Heinsius, F.H. Held, T. Heng, Y.K. Himmelreich, M. Hou, Y.R. Hou, Z.L. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Huang, G.S. Huang, J.S. Huang, X.T. Huang, X.Z. Huesken, N. Hussain, T. Andersson, W. Ikegami Imoehl, W. Irshad, M. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Jiang, H.L. Jiang, X.S. Jiang, X.Y. Jiao, J.B. Jiao, Z. Jin, D.P. Jin, S. Jin, Y. Johansson, T. Kalantar-Nayestanaki, N. Kang, X.S. Kappert, R. Kavatsyuk, M. Ke, B.C. Keshk, I.K. Khoukaz, A. Kiese, P. Kiuchi, R. Kliemt, R. Koch, L. Kolcu, O.B. Kopf, B. Kuemmel, M. Kuessner, M. Kupsc, A. Kurth, M. Kurth, M.G. Kühn, W. Lange, J.S. Larin, P. Leithoff, H. Lenz, T. Li, C. Li, Cheng Li, D.M. Li, F. Li, F.Y. Li, G. Li, H.B. Li, H.J. Li, J.C. Li, J.W. Li, Ke Li, L.K. Li, Lei Li, P.L. Li, P.R. Li, Q.Y. Li, W.D. Li, W.G. 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 China Center of Advanced Science and Technology Beijing100190 China COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200443 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 Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 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 Italy INFN Sezione di Ferrara FerraraI-44122 Italy Institute of Physics and Technology Peace Ave. 54B Ulaanbaatar13330 Mongolia Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Joint Institute for Nuclear Research Dubna Moscow region141980 Russia Justus-Liebig-Universitaet Giessen II. Physikalisches Institut Heinrich-Buff-Ring 16 GiessenD-35392 Germany KVI-CART University of Groningen GroningenNL-9747 AA Netherlands Lanzhou University Lanzhou730000 China Liaoning University Shenyang110036 China Nanjing Normal University Nanjing210023 China Nanjing University Nanjing210093 China Nankai University Tianjin300071 China Peking University Beijing100871 China Shandong Normal University Jinan

Using a data sample of 1.31 × 109 J/ψ events collected with the BESIII detector, a search for η′ → γγη via J/ψ → γη′ is performed for the first time. No significant η′ signal is observed in the γγη invariant mass spectrum, and the branching fraction of η′ → γγη is determined to be less than 1.33 × 10−4 at the 90% confidence level. Copyright © 2019, The Authors. All rights reserved.

关键词： Mass spectrometry

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Water-Soluble Organic Nanoparticles with Programable Intermolecular Charge Transfer for NIR-II Photothermal Anti-Bacterial Therapy

引用

Angewandte Chemie 2021年第21期133卷

作者： Shuang Tian Dr. Haotian Bai Dr. Shengliang Li Yafang Xiao Dr. Xiao Cui Xiaozhen Li Jihua Tan Zhongming Huang Dr. Dong Shen Prof. Weimin Liu Prof. Pengfei Wang Prof. Ben Zhong Tang Prof. Chun-Sing Lee Center of Super-Diamond and Advanced Films (COSDAF) & Department of Chemistry City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong SAR P. R. China Joint Laboratory of Nano-organic Functional Materials and Devices (TIPC and CityU) City University of Hong Kong Kowloon Hong Kong SAR P. R. China Department of Chemical and Biological Engineering Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and SCUT-HKUST Joint Research Laboratory The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong SAR P. R. China College of Pharmaceutical Sciences Soochow University Suzhou 215123 P. R. China Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China

Extensive recent efforts have been put on the design of high-performance organic near-infrared (NIR) photothermal agents (PTAs), especially over NIR-II bio-window (1000–1350 nm). So far, the development is mainly limited by the rarity of molecules with good NIR-II response. Here, we report organic nanoparticles of intermolecular charge-transfer complexes (CTCs) with easily programmable optical absorption. By employing different common donor and acceptor molecules to form CTC nanoparticles (CT NPs), absorption peaks of CT NPs can be controllably tuned from the NIR-I to NIR-II region. Notably, CT NPs formed with perylene and TCNQ have a considerably red-shifted absorption peak at 1040 nm and achieves a good photothermal conversion efficiency of 42 % under 1064 nm excitation. These nanoparticles were used for antibacterial application with effective activity towards both Gram-negative and Gram-positive bacteria. This work opens a new avenue into the development of efficient PTAs.

关键词： antibacterial intermolecular charge transfer near-infrared organic nanoparticles photothermal agent

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Measurement of the absolute branching fractions of Λ+c → Ληπ+ and Σ(1385)+η

arXiv

引用

arXiv 2018年

作者： Ablikim, M. Achasov, M.N. Ahmed, S. Albrecht, M. Alekseev, M. Amoroso, A. An, F.F. An, Q. Bai, Y. Bakina, O. Baldini Ferroli, R. Ban, Y. Begzsuren, K. Bennett, D.W. Bennett, J.V. Berger, N. Bertani, M. Bettoni, D. Bianchi, F. Boger, E. Boyko, I. Briere, R.A. Cai, H. Cai, X. Calcaterra, A. Cao, G.F. Cetin, S.A. Chai, J. Chang, J.F. Chang, W.L. Chelkov, G. Chen, G. Chen, H.S. Chen, J.C. Chen, M.L. Chen, S.J. Chen, Y.B. Cheng, W. Cibinetto, G. Cossio, F. Dai, H.L. Dai, J.P. Dbeyssi, A. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. de Mori, F. Ding, Y. Dong, C. Dong, J. Dong, L.Y. Dong, M.Y. Dou, Z.L. Du, S.X. Fan, J.Z. Fang, J. Fang, S.S. Fang, Y. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Fritsch, M. Fu, C.D. Fu, Y. Gao, Q. Gao, X.L. Gao, Y. Gao, Y.G. Gao, Z. Garillon, B. Garzia, I. Gilman, A. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Greco, M. Gu, L.M. Gu, M.H. Gu, S. Gu, Y.T. Guo, A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Guskov, A. Haddadi, Z. Han, S. Hao, X.Q. Harris, F.A. He, K.L. Heinsius, F.H. Held, T. Heng, Y.K. Hou, Z.L. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Huang, G.S. Huang, J.S. Huang, X.T. Huang, X.Z. Huesken, N. Hussain, T. Ikegami Andersson, W. Imoehl, W. Irshad, M. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Jiang, H.L. Jiang, X.S. Jiang, X.Y. Jiao, J.B. Jiao, Z. Jin, D.P. Jin, S. Jin, Y. Johansson, T. Kalantar-Nayestanaki, N. Kang, X.S. Kavatsyuk, M. Ke, B.C. Keshk, I.K. Khan, T. Khoukaz, A. Kiese, P. Kiuchi, R. Kliemt, R. Koch, L. Kolcu, O.B. Kopf, B. Kuemmel, M. Kuessner, M. Kupsc, A. Kurth, M. Kühn, W. Lange, J.S. Larin, P. Lavezzi, L. Leithoff, H. Li, C. Li, Cheng Li, D.M. Li, F. Li, F.Y. Li, G. Li, H.B. Li, H.J. Li, J.C. Li, J.W. Li, Ke Li, L.K. Li, Lei Li, P.L. Li, P.R. Li, Q.Y. Li, W.D. Li, W.G. Li, X.L. Li, X.N. Li, X.Q. Li, Z.B. 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 China Center of Advanced Science and Technology Beijing100190 China COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200443 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 Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 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 University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara FerraraI-44122 Italy University of Ferrara FerraraI-44122 Italy Institute of Physics and Technology Peace Ave. 54B Ulaanbaatar13330 Mongolia Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Joint Institute for Nuclear Research Dubna Moscow region141980 Russia Justus-Liebig-Universitaet Giessen II. Physikalisches Institut Heinrich-Buff-Ring 16 GiessenD-35392 Germany KVI-CART University of Groningen GroningenNL-9747 AA Netherlands Lanzhou University Lanzhou730000 China Liaoning University Shenyang110036 China Nanjing Normal University Nanjing210023 China Nanjing University Nanjing210093 China

We study the decays Λ+c → Ληπ+ and Σ(1385)+η based on Λ+c Λ¯−c pairs produced in e+e− collisions at a center-of-mass energy of √s = 4.6 GeV, corresponding to an integrated luminosity of 567 pb−1. The data sample was accumulated with the BESIII detector at the BEPCII collider. The branching fractions are measured to be B(Λ+c → Ληπ+) = (1.84 ± 0.21(stat.) ± 0.15(syst.))% and B(Λ+c → Σ(1385)+η) = (0.91 ± 0.18(stat.) ± 0.09(syst.))%, constituting the most precise measurements to date. Copyright © 2018, The Authors. All rights reserved.

关键词： Germanium alloys

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Observation of e+e− → Ds+D(∗)0K− and study of the P -wave Ds mesons

arXiv

引用

arXiv 2018年

作者： Ablikim, M. Achasov, M.N. Ahmed, S. Albrecht, M. Alekseev, M. Amoroso, A. An, F.F. An, Q. Bai, Y. Bakina, O. Baldini Ferroli, R. Ban, Y. Begzsuren, K. Bennett, D.W. Bennett, J.V. Berger, N. Bertani, M. Bettoni, D. Bianchi, F. Boyko, I. Briere, R.A. Cai, H. Cai, X. Calcaterra, A. Cao, G.F. Cetin, S.A. Chai, J. Chang, J.F. Chang, W.L. Chelkov, G. Chen, G. Chen, H.S. Chen, J.C. Chen, M.L. Chen, S.J. Chen, Y.B. Cheng, W.S. Cibinetto, G. Cossio, F. Dai, H.L. Dai, J.P. Dbeyssi, A. Dedovich, D. Deng, Z.Y. Denig, A. Denysenko, I. Destefanis, M. de Mori, F. Ding, Y. Dong, C. Dong, J. Dong, L.Y. Dong, M.Y. Dou, Z.L. Du, S.X. Fan, J.Z. Fang, J. Fang, S.S. Fang, Y. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C.Q. Fritsch, M. Fu, C.D. Fu, Y. Gao, Q. Gao, X.L. Gao, Y.N. Gao, Y.G. Gao, Z. Garillon, B. Garzia, I. Gilman, A. Goetzen, K. Gong, L. Gong, W.X. Gradl, W. Greco, M. Gu, L.M. Gu, M.H. Gu, S. Gu, Y.T. Guo, A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Guskov, A. Haddadi, Z. Han, S. Hao, X.Q. Harris, F.A. He, K.L. Heinsius, F.H. Held, T. Heng, Y.K. Hou, Z.L. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Huang, G.S. Huang, J.S. Huang, X.T. Huang, X.Z. Huang, Z.L. Huesken, N. Hussain, T. Ikegami Andersson, W. Imoehl, W. Irshad, M. Ji, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Jiang, H.L. Jiang, X.S. Jiang, X.Y. Jiao, J.B. Jiao, Z. Jin, D.P. Jin, S. Jin, Y. Johansson, T. Kalantar-Nayestanaki, N. Kang, X.S. Kavatsyuk, M. Ke, B.C. Keshk, I.K. Khan, T. Khoukaz, A. Kiese, P. Kiuchi, R. Kliemt, R. Koch, L. Kolcu, O.B. Kopf, B. Kuemmel, M. Kuessner, M. Kupsc, A. Kurth, M. Kühn, W. Lange, J.S. Larin, P. Lavezzi, L. Leithoff, H. Li, C. Li, Cheng Li, D.M. Li, F. Li, F.Y. Li, G. Li, H.B. Li, H.J. Li, J.C. Li, J.W. Li, Ke Li, L.K. Li, Lei Li, P.L. Li, P.R. Li, Q.Y. Li, W.D. Li, W.G. Li, X.L. 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 China Center of Advanced Science and Technology Beijing100190 China COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road Lahore54000 Pakistan Fudan University Shanghai200443 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 Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Henan Normal University Xinxiang453007 China Henan University of Science and Technology Luoyang471003 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 and University of Perugia PerugiaI-06100 Italy INFN Sezione di Ferrara FerraraI-44122 Italy University of Ferrara FerraraI-44122 Italy Institute of Physics and Technology Peace Ave. 54B Ulaanbaatar13330 Mongolia Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 MainzD-55099 Germany Joint Institute for Nuclear Research Dubna Moscow region141980 Russia Justus-Liebig-Universitaet Giessen II. Physikalisches Institut Heinrich-Buff-Ring 16 GiessenD-35392 Germany KVI-CART University of Groningen GroningenNL-9747 AA Netherlands Lanzhou University Lanzhou730000 China Liaoning University Shenyang110036 China Nanjing Normal University Nanjing210023 China Nanjing University Nanjing210093 Chi

Studies of e+e− → Ds+D(∗)0K− and the P -wave charmed-strange mesons are performed based on an e+e− collision data sample corresponding to an integrated luminosity of 567 pb−1 collected with the BESIII detector at √s = 4.600GeV. The processes of e+e− → Ds+D∗0K− and Ds+D0K− are observed for the first time and are found to be dominated by the modes Ds+Ds1(2536)− and Ds+Ds∗2(2573)−, respectively. The Born cross sections are measured to be σB(e+e− → Ds+D∗0K−) = (10.1±2.3±0.8) pb and σB(e+e− → Ds+D0K−) = (19.4±2.3±1.6) pb, and the products of Born cross section and the decay branching fraction are measured to be σB(e+e− → Ds+Ds1(2536)−+c.c.)·B(Ds1(2536)− → D∗0K−) = (7.5±1.8±0.7) pb and σB(e+e− → Ds+Ds∗2(2573)−+c.c.)·B(Ds∗2(2573)− → D0K−) = (19.7±2.9±2.0) pb. For the Ds1(2536)− and Ds∗2(2573)− mesons, the masses and widths are measured to be M(Ds1(2536)−) = (2537.7±0.5±3.1) MeV/c2, Γ(Ds1(2536)−) = (1.7± 1.2±0.6) MeV, and M(Ds∗2(2573)−) = (2570.7±2.0±1.7) MeV/c2, Γ(Ds∗2(2573)−) = (17.2±3.6±1.1) MeV. The spin-parity of the Ds∗2(2573)− meson is determined to be JP = 2+. In addition, the process e+e− → Ds+D(∗)0K− are searched for using the data samples taken at four (two) center-of-mass energies between 4.416 (4.527) and 4.575 GeV, and upper limits at the 90% confidence level on the cross sections are determined. Copyright © 2018, The Authors. All rights reserved.

关键词： Bosons

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