Measurement of e+ e− → Dbar D cross sections at the ψ(3770) resonance*

Chinese Physics C
Paper • The following article is OPEN ACCESS
Measurement of e+ e− → Dbar D cross sections at the ψ(3770) resonance*

M. Ablikim (麦迪娜)1, M. N. Achasov9,71, S. Ahmed14, M. Albrecht4, M. Alekseev60,62, A. Amoroso60,62, F. F. An (安芬芬)1, Q. An (安琪)44,57, Y. Bai (白羽)43, O. Bakina28, R. Baldini Ferroli22, Y. Ban (班勇)36, K. Begzsuren26, D. W. Bennett21, J. V. Bennett5, N. Berger27, M. Bertani22, D. Bettoni24, J. M. Bian (边渐鸣)54, F. Bianchi60,62, E. Boger28,69, I. Boyko28, R. A. Briere5, H. Cai (蔡浩)64, X. Cai (蔡啸)1,44, O. Cakir47, A. Calcaterra22, G. F. Cao (曹国富)1,51, S. A. Cetin48, J. Chai62, J. F. Chang (常劲帆)1,44, W. L. Chang1,51, G. Chelkov28,69,70, G. Chen (陈刚)1, H. S. Chen (陈和生)1,51, J. C. Chen (陈江川)1, M. L. Chen (陈玛丽)1,44, P. L. Chen (陈平亮)58, S. J. Chen (陈申见)34, X. R. Chen (陈旭荣)31, Y. B. Chen (陈元柏)1,44, X. K. Chu (褚新坤)36, G. Cibinetto24, F. Cossio62, H. L. Dai (代洪亮)1,44, J. P. Dai (代建平)39,75, A. Dbeyssi14, D. Dedovich28, Z. Y. Deng (邓子艳)1, A. Denig27, I. Denysenko28, M. Destefanis60,62, F. De Mori60,62, Y. Ding (丁勇)32, C. Dong (董超)35, J. Dong (董静)1,44, L. Y. Dong (董燎原)1,51, M. Y. Dong (董明义)1, Z. L. Dou (豆正磊)34, S. X. Du (杜书先)67, P. F. Duan (段鹏飞)1, J. Fang (方建)1,44, S. S. Fang (房双世)1,51, Y. Fang (方易)1, R. Farinelli24,25, L. Fava61,62, S. Fegan27, F. Feldbauer4, G. Felici22, C. Q. Feng (封常青)44,57, E. Fioravanti24, M. Fritsch4, C. D. Fu (傅成栋)1, Q. Gao (高清)1, X. L. Gao (高鑫磊)44,57, Y. Gao (高原宁)46, Y. G. Gao (高勇贵)6, Z. Gao (高榛)44,57, B. Garillon27, I. Garzia24, A. Gilman54, K. Goetzen10, L. Gong (龚丽)35, W. X. Gong (龚文煊)1,44, W. Gradl27, M. Greco60,62, L. M. Gu (谷立民)34, M. H. Gu (顾旻皓)1,44, Y. T. Gu (顾运厅)12, A. Q. Guo (郭爱强)1, L. B. Guo (郭立波)33, R. P. Guo (郭如盼)1,51, Y. P. Guo (郭玉萍)27, A. Guskov28, Z. Haddadi30, S. Han (韩爽)64, X. Q. Hao (郝喜庆)15, F. A. Harris52, K. L. He (何康林)1,51, X. Q. He (何希勤)56, F. H. Heinsius4, T. Held4, Y. K. Heng (衡月昆)1, T. Holtmann4, Z. L. Hou (侯治龙)1, H. M. Hu (胡海明)1,51, J. F. Hu (胡继峰)39,75, T. Hu (胡涛)1, Y. Hu (胡誉)1, G. S. Huang (黄光顺)44,57, J. S. Huang (黄金书)15, X. T. Huang (黄性涛)38, X. Z. Huang (黄晓忠)34, Z. L. Huang (黄智玲)32, T. Hussain59, W. Ikegami Andersson63, M Irshad44,57, Q. Ji (纪全)1, Q. P. Ji (姬清平)15, X. B. Ji (季晓斌)1,51, X. L. Ji (季筱璐)2, X. S. Jiang (江晓山)1, X. Y. Jiang (蒋兴雨)35, J. B. Jiao (焦健斌)38, Z. Jiao (焦铮)17, D. P. Jin (金大鹏)1, S. Jin (金山)1,51, Y. Jin (金毅)53, T. Johansson63, A. Julin54, N. Kalantar-Nayestanaki30, X. S. Kang (康晓珅)35, M. Kavatsyuk30, B. C. Ke (柯百谦)1, T. Khan44,57, A. Khoukaz55, P. Kiese27, R. Kliemt10, L. Koch29, O. B. Kolcu48,73, B. Kopf4, M. Kornicer52, M. Kuemmel4, M. Kuessner4, A. Kupsc63, M. Kurth1, W. Kuhn29, J. S. Lange29, M. Lara21, P. Larin14, L. Lavezzi62,1, S. Leiber4, H. Leithoff27, C. Li (李翠)63, Cheng Li (李澄)44,57, D. M. Li (李德民)67, F. Li (李飞)1,44, F. Y. Li (李峰云)36, G. Li (李刚)1, H. B. Li (李海波)1,51, H. J. Li (李惠静)1,51, J. C. Li (李家才)1, J. W. Li (李井文)42, K. J. Li (李凯杰)45, Kang Li (李康)13, Ke Li (李科)1, Lei Li (李蕾)3, P. L. Li (李佩莲)44,57, P. R. Li (李培荣)7,51, Q. Y. Li (李启云)38, T. Li (李腾)38, W. D. Li (李卫东)1,51, W. G. Li (李卫国)1, X. L. Li (李晓玲)38, X. N. Li (李小男)1,44, X. Q. Li (李学潜)35, Z. B. Li (李志兵)45, H. Liang (梁昊)44,57, Y. F. Liang (梁勇飞)41, Y. T. Liang (梁羽铁)29, G. R. Liao (廖广睿)11, L. Z. Liao (廖龙洲)1,51, J. Libby20, C. X. Lin (林创新)45, D. X. Lin (林德旭)14, B. Liu (刘冰)39,75, B. J. Liu (刘北江)1, C. X. Liu (刘春秀)1, D. Liu (刘栋)44,57, D. Y. Liu (刘殿宇)39,75, F. H. Liu (刘福虎)40, Fang Liu (刘芳)1, Feng Liu (刘峰)6, H. B. Liu (刘宏邦)12, H. L Liu (刘恒君)43, H. M. Liu (刘怀民)1,51, Huanhuan Liu (刘欢)1, Huihui Liu (刘汇慧)16, J. B. Liu (刘建北)44,57, J. Y. Liu (刘晶译)1,51, K. Liu (刘凯)46, K. Y. Liu (刘魁勇)32, Ke Liu (刘珂)6, L. D. Liu (刘兰雕)36, Q. Liu (刘倩)51, S. B. Liu (刘树彬)44,57, X. Liu (刘翔)31, Y. B. Liu (刘玉斌)35, Z. A. Liu (刘振安)1, Zhiqing Liu (刘智青)27, Y. F. Long (龙云飞)36, X. C. Lou (娄辛犴)1, H. J. Lu (吕海江)17, J. G. Lu (吕军光)1,44, Y. Lu (卢宇)1, Y. P. Lu (卢云鹏)1,44, C. L. Luo (罗成林)33, M. X. Luo (罗民兴)66, X. L. Luo (罗小兰)1,44, S. Lusso62, X. R. Lyu (吕晓睿)51, F. C. Ma (马凤才)32, H. L. Ma (马海龙)1, L. L. Ma (马连良)38, M. M. Ma (马明明)1,51, Q. M. Ma (马秋梅)1, X. N. Ma (马旭宁)35, X. Y. Ma (马骁妍)1,44, Y. M. Ma (马玉明)38, F. E. Maas14, M. Maggiora60,62, Q. A. Malik59, A. Mangoni23, Y. J. Mao (冒亚军)36, Z. P. Mao (毛泽普)1, S. Marcello60,62, Z. X. Meng (孟召霞)53, J. G. Messchendorp30, G. Mezzadri24, J. Min (闵建)1,44, T. J. Min (闵天觉)1, R. E. Mitchell21, X. H. Mo (莫晓虎)1, Y. J. Mo (莫玉俊)6, C. Morales Morales14, G. Morello22, N. Yu. Muchnoi9,71, H. Muramatsu (村松創)54, A. Mustafa4, S. Nakhoul10,74, Y. Nefedov28, F. Nerling10, I. B. Nikolaev9,71, Z. Ning (宁哲)1,44, S. Nisar8, S. L. Niu (牛顺利)1,44, X. Y. Niu (牛讯伊)1,51, S. L. Olsen (馬鵬)37,77, Q. Ouyang (欧阳群)1, S. Pacetti23, Y. Pan (潘越)44,57, M. Papenbrock63, P. Patteri22, M. Pelizaeus4, J. Pellegrino60,62, H. P. Peng (彭海平)44,57, Z. Y. Peng (彭志远)12, K. Peters10,74, J. Pettersson63, J. L. Ping (平加伦)33, R. G. Ping (平荣刚)1,51, A. Pitka4, R. Poling54, V. Prasad44,57, H. R. Qi (漆红荣)2, M. Qi (祁鸣)34, T. Y. Qi (齐天钰)2, S. Qian (钱森)1,44, C. F. Qiao (乔从丰)51, N. Qin (覃拈)64, X. S. Qin4, Z. H. Qin (秦中华)1,44, J. F. Qiu (邱进发)1, K. H. Rashid59,76, C. F. Redmer27, M. Richter4, M. Ripka27, M. Rolo62, G. 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© 2018 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
Chinese Physics C, Volume 42, Number 8
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1 Institute of High Energy Physics, Beijing 100049, China

2 Beihang University, Beijing 100191, China

3 Beijing Institute of Petrochemical Technology, Beijing 102617, China

4 Bochum Ruhr-University, D-44780 Bochum, Germany

5 Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA

6 Central China Normal University, Wuhan 430079, China

7 China Center of Advanced Science and Technology, Beijing 100190, China

8 COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan

9 G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia

10 GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany

11 Guangxi Normal University, Guilin 541004, China

12 Guangxi University, Nanning 530004, China

13 Hangzhou Normal University, Hangzhou 310036, China

14 Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany

15 Henan Normal University, Xinxiang 453007, China

16 Henan University of Science and Technology, Luoyang 471003, China

17 Huangshan College, Huangshan 245000, China

18 Hunan Normal University, Changsha 410081, China

19 Hunan University, Changsha 410082, China

20 Indian Institute of Technology Madras, Chennai 600036, India

21 Indiana University, Bloomington, Indiana 47405, USA

22 INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy

23 INFN and University of Perugia, I-06100, Perugia, Italy

24 INFN Sezione di Ferrara, I-44122, Ferrara, Italy

25 University of Ferrara, I-44122, Ferrara, Italy

26 Institute of Physics and Technology, Peace Ave. 54B, Ulaanbaatar 13330, Mongolia

27 Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany

28 Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia

29 Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany

30 KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands

31 Lanzhou University, Lanzhou 730000, China

32 Liaoning University, Shenyang 110036, China

33 Nanjing Normal University, Nanjing 210023, China

34 Nanjing University, Nanjing 210093, China

35 Nankai University, Tianjin 300071, China

36 Peking University, Beijing 100871, China

37 Seoul National University, Seoul, 151-747, Korea

38 Shandong University, Jinan 250100, China

39 Shanghai Jiao Tong University, Shanghai 200240, China

40 Shanxi University, Taiyuan 030006, China

41 Sichuan University, Chengdu 610064, China

42 Soochow University, Suzhou 215006, China

43 Southeast University, Nanjing 211100, China

44 State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, China

45 Sun Yat-Sen University, Guangzhou 510275, China

46 Tsinghua University, Beijing 100084, China

47 Ankara University, 06100 Tandogan, Ankara, Turkey

48 Istanbul Bilgi University, 34060 Eyup, Istanbul, Turkey

49 Uludag University, 16059 Bursa, Turkey

50 Near East University, Nicosia, North Cyprus, Mersin 10, Turkey

51 University of Chinese Academy of Sciences, Beijing 100049, China

52 University of Hawaii, Honolulu, Hawaii 96822, USA

53 University of Jinan, Jinan 250022, China

54 University of Minnesota, Minneapolis, Minnesota 55455, USA

55 University of Muenster, Wilhelm-Klemm-Str. 9, 48149 Muenster, Germany

56 University of Science and Technology Liaoning, Anshan 114051, China

57 University of Science and Technology of China, Hefei 230026, China

58 University of South China, Hengyang 421001, China

59 University of the Punjab, Lahore-54590, Pakistan

60 University of Turin, I-10125, Turin, Italy

61 University of Eastern Piedmont, I-15121, Alessandria, Italy

62 INFN, I-10125, Turin, Italy

63 Uppsala University, Box 516, SE-75120 Uppsala, Sweden

64 Wuhan University, Wuhan 430072, China

65 Xinyang Normal University, Xinyang 464000, China

66 Zhejiang University, Hangzhou 310027, China

67 Zhengzhou University, Zhengzhou 450001, China

68 Also at Bogazici University, 34342 Istanbul, Turkey

69 Also at the Moscow Institute of Physics and Technology, Moscow 141700, Russia

70 Also at the Functional Electronics Laboratory, Tomsk State University, Tomsk, 634050, Russia

71 Also at the Novosibirsk State University, Novosibirsk, 630090, Russia

72 Also at the NRC "Kurchatov Institute", PNPI, 188300, Gatchina, Russia

73 Also at Istanbul Arel University, 34295 Istanbul, Turkey

74 Also at Goethe University Frankfurt, 60323 Frankfurt am Main, Germany

75 Also at Key Laboratory for Particle Physics, Astrophysics and Cosmology, Ministry of Education; Shanghai Key Laboratory for Particle Physics and Cosmology; Institute of Nuclear and Particle Physics, Shanghai 200240, China

76 Also at Government College Women University, Sialkot - 51310. Punjab, Pakistan

77 Currently at: Center for Underground Physics, Institute for Basic Science, Daejeon 34126, Korea
Dates

Received 17 March 2018
Citation

M. Ablikim et al 2018 Chinese Phys. C 42 083001

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DOI

https://doi.org/10.1088/1674-1137/42/8/083001
E-print

http://arxiv.org/abs/1803.06293

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Abstract

We report new measurements of the cross sections for the production of Dbar D final states at the ψ(3770) resonance. Our data sample consists of an integrated luminosity of 2.93 fb−1 of e+e− annihilation data produced by the BEPCII collider and collected and analyzed with the BESIII detector. We exclusively reconstruct three D0 and six D+ hadronic decay modes and use the ratio of the yield of fully reconstructed Dbar D events ("double tags") to the yield of all reconstructed D or bar D mesons ("single tags") to determine the number of D0bar D0 and D+D− events, benefiting from the cancellation of many systematic uncertainties. Combining these yields with an independent determination of the integrated luminosity of the data sample, we find the cross sections to be σ(e+e− → D0bar D0) nb and σ(e+e− → D+D−) = (2.830 ± 0.011 ± 0.026) nb, where the uncertainties are statistical and systematic, respectively.

Chinese Physics C
Paper • The following article is OPEN ACCESS
Measurement of e+ e− → Dbar D cross sections at the ψ(3770) resonance*

M. Ablikim (麦迪娜)1, M. N. Achasov9,71, S. Ahmed14, M. Albrecht4, M. Alekseev60,62, A. Amoroso60,62, F. F. An (安芬芬)1, Q. An (安琪)44,57, Y. Bai (白羽)43, O. Bakina28, R. Baldini Ferroli22, Y. Ban (班勇)36, K. Begzsuren26, D. W. Bennett21, J. V. Bennett5, N. Berger27, M. Bertani22, D. Bettoni24, J. M. Bian (边渐鸣)54, F. Bianchi60,62, E. Boger28,69, I. Boyko28, R. A. Briere5, H. Cai (蔡浩)64, X. Cai (蔡啸)1,44, O. Cakir47, A. Calcaterra22, G. F. Cao (曹国富)1,51, S. A. Cetin48, J. Chai62, J. F. Chang (常劲帆)1,44, W. L. Chang1,51, G. Chelkov28,69,70, G. Chen (陈刚)1, H. S. Chen (陈和生)1,51, J. C. Chen (陈江川)1, M. L. Chen (陈玛丽)1,44, P. L. Chen (陈平亮)58, S. J. Chen (陈申见)34, X. R. Chen (陈旭荣)31, Y. B. Chen (陈元柏)1,44, X. K. Chu (褚新坤)36, G. Cibinetto24, F. Cossio62, H. L. Dai (代洪亮)1,44, J. P. Dai (代建平)39,75, A. Dbeyssi14, D. Dedovich28, Z. Y. Deng (邓子艳)1, A. Denig27, I. Denysenko28, M. Destefanis60,62, F. De Mori60,62, Y. Ding (丁勇)32, C. Dong (董超)35, J. Dong (董静)1,44, L. Y. Dong (董燎原)1,51, M. Y. Dong (董明义)1, Z. L. Dou (豆正磊)34, S. X. Du (杜书先)67, P. F. Duan (段鹏飞)1, J. Fang (方建)1,44, S. S. Fang (房双世)1,51, Y. Fang (方易)1, R. Farinelli24,25, L. Fava61,62, S. Fegan27, F. Feldbauer4, G. Felici22, C. Q. Feng (封常青)44,57, E. Fioravanti24, M. Fritsch4, C. D. Fu (傅成栋)1, Q. Gao (高清)1, X. L. Gao (高鑫磊)44,57, Y. Gao (高原宁)46, Y. G. Gao (高勇贵)6, Z. Gao (高榛)44,57, B. Garillon27, I. Garzia24, A. Gilman54, K. Goetzen10, L. Gong (龚丽)35, W. X. Gong (龚文煊)1,44, W. Gradl27, M. Greco60,62, L. M. Gu (谷立民)34, M. H. Gu (顾旻皓)1,44, Y. T. Gu (顾运厅)12, A. Q. Guo (郭爱强)1, L. B. Guo (郭立波)33, R. P. Guo (郭如盼)1,51, Y. P. Guo (郭玉萍)27, A. Guskov28, Z. Haddadi30, S. Han (韩爽)64, X. Q. Hao (郝喜庆)15, F. A. Harris52, K. L. He (何康林)1,51, X. Q. He (何希勤)56, F. H. Heinsius4, T. Held4, Y. K. Heng (衡月昆)1, T. Holtmann4, Z. L. Hou (侯治龙)1, H. M. Hu (胡海明)1,51, J. F. Hu (胡继峰)39,75, T. Hu (胡涛)1, Y. Hu (胡誉)1, G. S. Huang (黄光顺)44,57, J. S. Huang (黄金书)15, X. T. Huang (黄性涛)38, X. Z. Huang (黄晓忠)34, Z. L. Huang (黄智玲)32, T. Hussain59, W. Ikegami Andersson63, M Irshad44,57, Q. Ji (纪全)1, Q. P. Ji (姬清平)15, X. B. Ji (季晓斌)1,51, X. L. Ji (季筱璐)2, X. S. Jiang (江晓山)1, X. Y. Jiang (蒋兴雨)35, J. B. Jiao (焦健斌)38, Z. Jiao (焦铮)17, D. P. Jin (金大鹏)1, S. Jin (金山)1,51, Y. Jin (金毅)53, T. Johansson63, A. Julin54, N. Kalantar-Nayestanaki30, X. S. Kang (康晓珅)35, M. Kavatsyuk30, B. C. Ke (柯百谦)1, T. Khan44,57, A. Khoukaz55, P. Kiese27, R. Kliemt10, L. Koch29, O. B. Kolcu48,73, B. Kopf4, M. Kornicer52, M. Kuemmel4, M. Kuessner4, A. Kupsc63, M. Kurth1, W. Kuhn29, J. S. Lange29, M. Lara21, P. Larin14, L. Lavezzi62,1, S. Leiber4, H. Leithoff27, C. Li (李翠)63, Cheng Li (李澄)44,57, D. M. Li (李德民)67, F. Li (李飞)1,44, F. Y. Li (李峰云)36, G. Li (李刚)1, H. B. Li (李海波)1,51, H. J. Li (李惠静)1,51, J. C. Li (李家才)1, J. W. Li (李井文)42, K. J. Li (李凯杰)45, Kang Li (李康)13, Ke Li (李科)1, Lei Li (李蕾)3, P. L. Li (李佩莲)44,57, P. R. Li (李培荣)7,51, Q. Y. Li (李启云)38, T. Li (李腾)38, W. D. Li (李卫东)1,51, W. G. Li (李卫国)1, X. L. Li (李晓玲)38, X. N. Li (李小男)1,44, X. Q. Li (李学潜)35, Z. B. Li (李志兵)45, H. Liang (梁昊)44,57, Y. F. Liang (梁勇飞)41, Y. T. Liang (梁羽铁)29, G. R. Liao (廖广睿)11, L. Z. Liao (廖龙洲)1,51, J. Libby20, C. X. Lin (林创新)45, D. X. Lin (林德旭)14, B. Liu (刘冰)39,75, B. J. Liu (刘北江)1, C. X. Liu (刘春秀)1, D. Liu (刘栋)44,57, D. Y. Liu (刘殿宇)39,75, F. H. Liu (刘福虎)40, Fang Liu (刘芳)1, Feng Liu (刘峰)6, H. B. Liu (刘宏邦)12, H. L Liu (刘恒君)43, H. M. Liu (刘怀民)1,51, Huanhuan Liu (刘欢)1, Huihui Liu (刘汇慧)16, J. B. Liu (刘建北)44,57, J. Y. Liu (刘晶译)1,51, K. Liu (刘凯)46, K. Y. Liu (刘魁勇)32, Ke Liu (刘珂)6, L. D. Liu (刘兰雕)36, Q. Liu (刘倩)51, S. B. Liu (刘树彬)44,57, X. Liu (刘翔)31, Y. B. Liu (刘玉斌)35, Z. A. Liu (刘振安)1, Zhiqing Liu (刘智青)27, Y. F. Long (龙云飞)36, X. C. Lou (娄辛犴)1, H. J. Lu (吕海江)17, J. G. Lu (吕军光)1,44, Y. Lu (卢宇)1, Y. P. Lu (卢云鹏)1,44, C. L. Luo (罗成林)33, M. X. Luo (罗民兴)66, X. L. Luo (罗小兰)1,44, S. Lusso62, X. R. Lyu (吕晓睿)51, F. C. Ma (马凤才)32, H. L. Ma (马海龙)1, L. L. Ma (马连良)38, M. M. Ma (马明明)1,51, Q. M. Ma (马秋梅)1, X. N. Ma (马旭宁)35, X. Y. Ma (马骁妍)1,44, Y. M. Ma (马玉明)38, F. E. Maas14, M. 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© 2018 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
Chinese Physics C, Volume 42, Number 8
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1 Institute of High Energy Physics, Beijing 100049, China

2 Beihang University, Beijing 100191, China

3 Beijing Institute of Petrochemical Technology, Beijing 102617, China

4 Bochum Ruhr-University, D-44780 Bochum, Germany

5 Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA

6 Central China Normal University, Wuhan 430079, China

7 China Center of Advanced Science and Technology, Beijing 100190, China

8 COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan

9 G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia

10 GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany

11 Guangxi Normal University, Guilin 541004, China

12 Guangxi University, Nanning 530004, China

13 Hangzhou Normal University, Hangzhou 310036, China

14 Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany

15 Henan Normal University, Xinxiang 453007, China

16 Henan University of Science and Technology, Luoyang 471003, China

17 Huangshan College, Huangshan 245000, China

18 Hunan Normal University, Changsha 410081, China

19 Hunan University, Changsha 410082, China

20 Indian Institute of Technology Madras, Chennai 600036, India

21 Indiana University, Bloomington, Indiana 47405, USA

22 INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy

23 INFN and University of Perugia, I-06100, Perugia, Italy

24 INFN Sezione di Ferrara, I-44122, Ferrara, Italy

25 University of Ferrara, I-44122, Ferrara, Italy

26 Institute of Physics and Technology, Peace Ave. 54B, Ulaanbaatar 13330, Mongolia

27 Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany

28 Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia

29 Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany

30 KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands

31 Lanzhou University, Lanzhou 730000, China

32 Liaoning University, Shenyang 110036, China

33 Nanjing Normal University, Nanjing 210023, China

34 Nanjing University, Nanjing 210093, China

35 Nankai University, Tianjin 300071, China

36 Peking University, Beijing 100871, China

37 Seoul National University, Seoul, 151-747, Korea

38 Shandong University, Jinan 250100, China

39 Shanghai Jiao Tong University, Shanghai 200240, China

40 Shanxi University, Taiyuan 030006, China

41 Sichuan University, Chengdu 610064, China

42 Soochow University, Suzhou 215006, China

43 Southeast University, Nanjing 211100, China

44 State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, China

45 Sun Yat-Sen University, Guangzhou 510275, China

46 Tsinghua University, Beijing 100084, China

47 Ankara University, 06100 Tandogan, Ankara, Turkey

48 Istanbul Bilgi University, 34060 Eyup, Istanbul, Turkey

49 Uludag University, 16059 Bursa, Turkey

50 Near East University, Nicosia, North Cyprus, Mersin 10, Turkey

51 University of Chinese Academy of Sciences, Beijing 100049, China

52 University of Hawaii, Honolulu, Hawaii 96822, USA

53 University of Jinan, Jinan 250022, China

54 University of Minnesota, Minneapolis, Minnesota 55455, USA

55 University of Muenster, Wilhelm-Klemm-Str. 9, 48149 Muenster, Germany

56 University of Science and Technology Liaoning, Anshan 114051, China

57 University of Science and Technology of China, Hefei 230026, China

58 University of South China, Hengyang 421001, China

59 University of the Punjab, Lahore-54590, Pakistan

60 University of Turin, I-10125, Turin, Italy

61 University of Eastern Piedmont, I-15121, Alessandria, Italy

62 INFN, I-10125, Turin, Italy

63 Uppsala University, Box 516, SE-75120 Uppsala, Sweden

64 Wuhan University, Wuhan 430072, China

65 Xinyang Normal University, Xinyang 464000, China

66 Zhejiang University, Hangzhou 310027, China

67 Zhengzhou University, Zhengzhou 450001, China

68 Also at Bogazici University, 34342 Istanbul, Turkey

69 Also at the Moscow Institute of Physics and Technology, Moscow 141700, Russia

70 Also at the Functional Electronics Laboratory, Tomsk State University, Tomsk, 634050, Russia

71 Also at the Novosibirsk State University, Novosibirsk, 630090, Russia

72 Also at the NRC "Kurchatov Institute", PNPI, 188300, Gatchina, Russia

73 Also at Istanbul Arel University, 34295 Istanbul, Turkey

74 Also at Goethe University Frankfurt, 60323 Frankfurt am Main, Germany

75 Also at Key Laboratory for Particle Physics, Astrophysics and Cosmology, Ministry of Education; Shanghai Key Laboratory for Particle Physics and Cosmology; Institute of Nuclear and Particle Physics, Shanghai 200240, China

76 Also at Government College Women University, Sialkot - 51310. Punjab, Pakistan

77 Currently at: Center for Underground Physics, Institute for Basic Science, Daejeon 34126, Korea
Dates

Received 17 March 2018
Citation

M. Ablikim et al 2018 Chinese Phys. C 42 083001

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DOI

https://doi.org/10.1088/1674-1137/42/8/083001
E-print

http://arxiv.org/abs/1803.06293

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Abstract

We report new measurements of the cross sections for the production of Dbar D final states at the ψ(3770) resonance. Our data sample consists of an integrated luminosity of 2.93 fb−1 of e+e− annihilation data produced by the BEPCII collider and collected and analyzed with the BESIII detector. We exclusively reconstruct three D0 and six D+ hadronic decay modes and use the ratio of the yield of fully reconstructed Dbar D events ("double tags") to the yield of all reconstructed D or bar D mesons ("single tags") to determine the number of D0bar D0 and D+D− events, benefiting from the cancellation of many systematic uncertainties. Combining these yields with an independent determination of the integrated luminosity of the data sample, we find the cross sections to be σ(e+e− → D0bar D0) nb and σ(e+e− → D+D−) = (2.830 ± 0.011 ± 0.026) nb, where the uncertainties are statistical and systematic, respectively.