Precision Measurement of the e^{+}e^{-}→Λ_{c}^{+}Λ[over ¯]_{c}^{-} Cross Section Near Threshold

M Ablikim¹, M N Achasov², S Ahmed³, M Albrecht⁴, M Alekseev^{5

6}, A Amoroso^{5

6}, F F An¹, Q An^{7

8}, J Z Bai¹, Y Bai⁹, O Bakina¹⁰, R Baldini Ferroli¹¹, Y Ban¹², K Begzsuren¹³, D W Bennett¹⁴, J V Bennett¹⁵, N Berger¹⁶, M Bertani¹¹, D Bettoni¹⁷, F Bianchi^{5

6}, E Boger¹⁰, I Boyko¹⁰, R A Briere¹⁵, H Cai¹⁸, X Cai^{1

7}, O Cakir¹⁹, A Calcaterra¹¹, G F Cao^{1

20}, S A Cetin²¹, J Chai⁶, J F Chang^{1

7}, G Chelkov¹⁰, G Chen¹, H S Chen^{1

20}, J C Chen¹, M L Chen^{1

7}, P L Chen²², S J Chen²³, X R Chen²⁴, Y B Chen^{1

7}, X K Chu¹², G Cibinetto¹⁷, F Cossio⁶, H L Dai^{1

7}, J P Dai²⁵, A Dbeyssi³, D Dedovich¹⁰, Z Y Deng¹, A Denig¹⁶, I Denysenko¹⁰, M Destefanis^{5

6}, F De Mori^{5

6}, Y Ding²⁶, C Dong²⁷, J Dong^{1

7}, L Y Dong^{1

20}, M Y Dong^{1

7

20}, Z L Dou²³, S X Du²⁸, P F Duan¹, J Fang^{1

7}, S S Fang^{1

20}, Y Fang¹, R Farinelli^{17

29}, L Fava^{30

6}, S Fegan¹⁶, F Feldbauer⁴, G Felici¹¹, C Q Feng^{7

8}, E Fioravanti¹⁷, M Fritsch⁴, C D Fu¹, Q Gao¹, X L Gao^{7

8}, Y Gao³¹, Y G Gao³², Z Gao^{7

8}, B Garillon¹⁶, I Garzia¹⁷, A Gilman³³, K Goetzen³⁴, L Gong²⁷, W X Gong^{1

7}, W Gradl¹⁶, M Greco^{5

6}, M H Gu^{1

7}, Y T Gu³⁵, A Q Guo¹, R P Guo^{1

20}, Y P Guo¹⁶, A Guskov¹⁰, Z Haddadi³⁶, S Han¹⁸, X Q Hao³⁷, F A Harris³⁸, K L He^{1

20}, X Q He³⁹, F H Heinsius⁴, T Held⁴, Y K Heng^{1

7

20}, T Holtmann⁴, Z L Hou¹, H M Hu^{1

20}, J F Hu²⁵, T Hu^{1

7

20}, Y Hu¹, G S Huang^{7

8}, J S Huang³⁷, X T Huang⁴⁰, X Z Huang²³, Z L Huang²⁶, T Hussain⁴¹, W Ikegami Andersson⁴², Q Ji¹, Q P Ji³⁷, X B Ji^{1

20}, X L Ji^{1

7}, X S Jiang^{1

7

20}, X Y Jiang²⁷, J B Jiao⁴⁰, Z Jiao⁴³, D P Jin^{1

7

20}, S Jin^{1

20}, Y Jin⁴⁴, T Johansson⁴², A Julin³³, N Kalantar-Nayestanaki³⁶, X S Kang²⁷, M Kavatsyuk³⁶, B C Ke¹, T Khan^{7

8}, A Khoukaz⁴⁵, P Kiese¹⁶, R Kliemt³⁴, L Koch⁴⁶, O B Kolcu²¹, B Kopf⁴, M Kornicer³⁸, M Kuemmel⁴, M Kuhlmann⁴, A Kupsc⁴², W Kühn⁴⁶, J S Lange⁴⁶, M Lara¹⁴, P Larin³, L Lavezzi⁶, H Leithoff¹⁶, C Li⁴², Cheng Li^{7

8}, D M Li²⁸, F Li^{1

7}, F Y Li¹², G Li¹, H B Li^{1

20}, H J Li^{1

20}, J C Li¹, J W Li⁴⁷, Jin Li⁴⁸, K J Li⁴⁹, Kang Li⁵⁰, Ke Li¹, Lei Li⁵¹, P L Li^{7

8}, P R Li^{52

20}, Q Y Li⁴⁰, W D Li^{1

20}, W G Li¹, X L Li⁴⁰, X N Li^{1

7}, X Q Li²⁷, Z B Li⁴⁹, H Liang^{7

8}, Y F Liang⁵³, Y T Liang⁴⁶, G R Liao⁵⁴, J Libby⁵⁵, C X Lin⁴⁹, D X Lin³, B Liu²⁵, B J Liu¹, C X Liu¹, D Liu^{7

8}, F H Liu⁵⁶, Fang Liu¹, Feng Liu³², H B Liu³⁵, H L Liu⁹, H M Liu^{1

20}, Huanhuan Liu¹, Huihui Liu⁵⁷, J B Liu^{7

8}, J Y Liu^{1

20}, K Liu³¹, K Y Liu²⁶, Ke Liu³², L D Liu¹², Q Liu²⁰, S B Liu^{7

8}, X Liu²⁴, Y B Liu²⁷, Z A Liu^{1

7

20}, Zhiqing Liu¹⁶, Y F Long¹², X C Lou^{1

7

20}, H J Lu⁴³, J G Lu^{1

7}, Y Lu¹, Y P Lu^{1

7}, C L Luo⁵⁸, M X Luo⁵⁹, X L Luo^{1

7}, S Lusso⁶, X R Lyu²⁰, F C Ma²⁶, H L Ma¹, L L Ma⁴⁰, M M Ma^{1

20}, Q M Ma¹, T Ma¹, X N Ma²⁷, X Y Ma^{1

7}, Y M Ma⁴⁰, F E Maas³, M Maggiora^{5

6}, Q A Malik⁴¹, Y J Mao¹², Z P Mao¹, S Marcello^{5

6}, Z X Meng⁴⁴, J G Messchendorp³⁶, G Mezzadri²⁹, J Min^{1

7}, R E Mitchell¹⁴, X H Mo^{1

7

20}, Y J Mo³², C Morales Morales³, N Yu Muchnoi², H Muramatsu³³, A Mustafa⁴, Y Nefedov¹⁰, F Nerling³⁴, I B Nikolaev², Z Ning^{1

7}, S Nisar⁶⁰, S L Niu^{1

7}, X Y Niu^{1

20}, S L Olsen⁴⁸, Q Ouyang^{1

7

20}, S Pacetti⁶¹, Y Pan^{7

8}, M Papenbrock⁴², P Patteri¹¹, M Pelizaeus⁴, J Pellegrino^{5

6}, H P Peng^{7

8}, Z Y Peng³⁵, K Peters³⁴, J Pettersson⁴², J L Ping⁵⁸, R G Ping^{1

20}, A Pitka⁴, R Poling³³, V Prasad^{7

8}, H R Qi⁶², M Qi²³, T Y Qi⁶², S Qian^{1

7}, C F Qiao²⁰, N Qin¹⁸, X S Qin⁴, Z H Qin^{1

7}, J F Qiu¹, K H Rashid⁴¹, C F Redmer¹⁶, M Richter⁴, M Ripka¹⁶, M Rolo⁶, G Rong^{1

20}, Ch Rosner³, A Sarantsev¹⁰, M Savrié²⁹, C Schnier⁴, K Schoenning⁴², W Shan⁶³, X Y Shan^{7

8}, M Shao^{7

8}, C P Shen⁶², P X Shen²⁷, X Y Shen^{1

20}, H Y Sheng¹, X Shi^{1

7}, J J Song⁴⁰, W M Song⁴⁰, X Y Song¹, S Sosio^{5

6}, C Sowa⁴, S Spataro^{5

6}, G X Sun¹, J F Sun³⁷, L Sun¹⁸, S S Sun^{1

20}, X H Sun¹, Y J Sun^{7

8}, Y K Sun^{7

8}, Y Z Sun¹, Z J Sun^{1

7}, Z T Sun¹⁴, Y T Tan^{7

8}, C J Tang⁵³, G Y Tang¹, X Tang¹, I Tapan⁶⁴, M Tiemens³⁶, B Tsednee¹³, I Uman⁶⁵, G S Varner³⁸, B Wang¹, B L Wang²⁰, D Wang¹², D Y Wang¹², Dan Wang²⁰, K Wang^{1

7}, L L Wang¹, L S Wang¹, M Wang⁴⁰, Meng Wang^{1

20}, P Wang¹, P L Wang¹, W P Wang^{7

8}, X F Wang³¹, Y Wang^{7

8}, Y D Wang³, Y F Wang^{1

7

20}, Y Q Wang¹⁶, Z Wang^{1

7}, Z G Wang^{1

7}, Z Y Wang¹, Zongyuan Wang^{1

20}, T Weber⁴, D H Wei⁵⁴, J H Wei²⁷, P Weidenkaff¹⁶, S P Wen¹, U Wiedner⁴, M Wolke⁴², L H Wu¹, L J Wu^{1

20}, Z Wu^{1

7}, L Xia^{7

8}, Y Xia⁶⁶, D Xiao¹, Y J Xiao^{1

20}, Z J Xiao⁵⁸, Y G Xie^{1

7}, Y H Xie³², X A Xiong^{1

20}, Q L Xiu^{1

7}, G F Xu¹, J J Xu^{1

20}, L Xu¹, Q J Xu⁵⁰, Q N Xu²⁰, X P Xu⁴⁷, F Yan²², L Yan^{5

6}, W B Yan^{7

8}, W C Yan⁶², Y H Yan⁶⁶, H J Yang²⁵, H X Yang¹, L Yang¹⁸, Y H Yang²³, Y X Yang⁵⁴, Yifan Yang^{1

20}, M Ye^{1

7}, M H Ye⁵², J H Yin¹, Z Y You⁴⁹, B X Yu^{1

7

20}, C X Yu²⁷, J S Yu²⁴, C Z Yuan^{1

20}, Y Yuan¹, A Yuncu²¹, A A Zafar⁴¹, Y Zeng⁶⁶, Z Zeng^{7

8}, B X Zhang¹, B Y Zhang^{1

7}, C C Zhang¹, D H Zhang¹, H H Zhang⁴⁹, H Y Zhang^{1

7}, J Zhang^{1

20}, J L Zhang⁶⁷, J Q Zhang⁴, J W Zhang^{1

7

20}, J Y Zhang¹, J Z Zhang^{1

20}, K Zhang^{1

20}, L Zhang³¹, S Q Zhang²⁷, X Y Zhang⁴⁰, Y Zhang^{7

8}, Y H Zhang^{1

7}, Y T Zhang^{7

8}, Yang Zhang¹, Yao Zhang¹, Yu Zhang²⁰, Z H Zhang³², Z P Zhang⁸, Z Y Zhang¹⁸, G Zhao¹, J W Zhao^{1

7}, J Y Zhao^{1

20}, J Z Zhao^{1

7}, Lei Zhao^{7

8}, Ling Zhao¹, M G Zhao²⁷, Q Zhao¹, S J Zhao²⁸, T C Zhao¹, Y B Zhao^{1

7}, Z G Zhao^{7

8}, A Zhemchugov¹⁰, B Zheng^{3

22}, J P Zheng^{1

7}, Y H Zheng²⁰, B Zhong⁵⁸, L Zhou^{1

7}, Q Zhou^{1

20}, X Zhou¹⁸, X K Zhou^{7

8}, X R Zhou^{7

8}, X Y Zhou¹, A N Zhu^{1

20}, J Zhu⁴⁹, K Zhu¹, K J Zhu^{1

7

20}, S Zhu¹, S H Zhu³⁹, X L Zhu³¹, Y C Zhu^{7

8}, Y S Zhu^{1

20}, Z A Zhu^{1

20}, J Zhuang^{1

7}, B S Zou¹, J H Zou¹; BESIII Collaboration

Affiliations

¹ Institute of High Energy Physics, Beijing 100049, People's Republic of China.
² G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
³ Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
⁴ Bochum Ruhr-University, D-44780 Bochum, Germany.
⁵ University of Turin, I-10125 Turin, Italy.
⁶ INFN, I-10125 Turin, Italy.
⁷ State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
⁸ University of Science and Technology of China, Hefei 230026, People's Republic of China.
⁹ Southeast University, Nanjing 211100, People's Republic of China.
¹⁰ Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
¹¹ INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
¹² Peking University, Beijing 100871, People's Republic of China.
¹³ Institute of Physics and Technology, Peace Avenue 54B, Ulaanbaatar 13330, Mongolia.
¹⁴ Indiana University, Bloomington, Indiana 47405, USA.
¹⁵ Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
¹⁶ Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
¹⁷ INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
¹⁸ Wuhan University, Wuhan 430072, People's Republic of China.
¹⁹ Ankara University, 06100 Tandogan, Ankara, Turkey.
²⁰ University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
²¹ Istanbul Bilgi University, 34060 Eyup, Istanbul, Turkey.
²² University of South China, Hengyang 421001, People's Republic of China.
²³ Nanjing University, Nanjing 210093, People's Republic of China.
²⁴ Lanzhou University, Lanzhou 730000, People's Republic of China.
²⁵ Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
²⁶ Liaoning University, Shenyang 110036, People's Republic of China.
²⁷ Nankai University, Tianjin 300071, People's Republic of China.
²⁸ Zhengzhou University, Zhengzhou 450001, People's Republic of China.
²⁹ University of Ferrara, I-44122 Ferrara, Italy.
³⁰ University of Eastern Piedmont, I-15121 Alessandria, Italy.
³¹ Tsinghua University, Beijing 100084, People's Republic of China.
³² Central China Normal University, Wuhan 430079, People's Republic of China.
³³ University of Minnesota, Minneapolis, Minnesota 55455, USA.
³⁴ GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany.
³⁵ Guangxi University, Nanning 530004, People's Republic of China.
³⁶ KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands.
³⁷ Henan Normal University, Xinxiang 453007, People's Republic of China.
³⁸ University of Hawaii, Honolulu, Hawaii 96822, USA.
³⁹ University of Science and Technology Liaoning, Anshan 114051, People's Republic of China.
⁴⁰ Shandong University, Jinan 250100, People's Republic of China.
⁴¹ University of the Punjab, Lahore-54590, Pakistan.
⁴² Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
⁴³ Huangshan College, Huangshan 245000, People's Republic of China.
⁴⁴ University of Jinan, Jinan 250022, People's Republic of China.
⁴⁵ University of Muenster, Wilhelm-Klemm-Straße 9, 48149 Muenster, Germany.
⁴⁶ Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
⁴⁷ Soochow University, Suzhou 215006, People's Republic of China.
⁴⁸ Seoul National University, Seoul 151-747, Korea.
⁴⁹ Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
⁵⁰ Hangzhou Normal University, Hangzhou 310036, People's Republic of China.
⁵¹ Beijing Institute of Petrochemical Technology, Beijing 102617, People's Republic of China.
⁵² China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China.
⁵³ Sichuan University, Chengdu 610064, People's Republic of China.
⁵⁴ Guangxi Normal University, Guilin 541004, People's Republic of China.
⁵⁵ Indian Institute of Technology Madras, Chennai 600036, India.
⁵⁶ Shanxi University, Taiyuan 030006, People's Republic of China.
⁵⁷ Henan University of Science and Technology, Luoyang 471003, People's Republic of China.
⁵⁸ Nanjing Normal University, Nanjing 210023, People's Republic of China.
⁵⁹ Zhejiang University, Hangzhou 310027, People's Republic of China.
⁶⁰ COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan.
⁶¹ INFN and University of Perugia, I-06100 Perugia, Italy.
⁶² Beihang University, Beijing 100191, People's Republic of China.
⁶³ Hunan Normal University, Changsha 410081, People's Republic of China.
⁶⁴ Uludag University, 16059 Bursa, Turkey.
⁶⁵ Near East University, Nicosia, North Cyprus, Mersin 10, Turkey.
⁶⁶ Hunan University, Changsha 410082, People's Republic of China.
⁶⁷ Xinyang Normal University, Xinyang 464000, People's Republic of China.

PMID: 29694170
DOI: 10.1103/PhysRevLett.120.132001

Free article

Precision Measurement of the e^{+}e^{-}→Λ_{c}^{+}Λ[over ¯]_{c}^{-} Cross Section Near Threshold

M Ablikim et al. Phys Rev Lett. 2018.

Free article

. 2018 Mar 30;120(13):132001.

doi: 10.1103/PhysRevLett.120.132001.

Authors

Affiliations

¹ Institute of High Energy Physics, Beijing 100049, People's Republic of China.
² G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
³ Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
⁴ Bochum Ruhr-University, D-44780 Bochum, Germany.
⁵ University of Turin, I-10125 Turin, Italy.
⁶ INFN, I-10125 Turin, Italy.
⁷ State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
⁸ University of Science and Technology of China, Hefei 230026, People's Republic of China.
⁹ Southeast University, Nanjing 211100, People's Republic of China.
¹⁰ Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
¹¹ INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
¹² Peking University, Beijing 100871, People's Republic of China.
¹³ Institute of Physics and Technology, Peace Avenue 54B, Ulaanbaatar 13330, Mongolia.
¹⁴ Indiana University, Bloomington, Indiana 47405, USA.
¹⁵ Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
¹⁶ Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
¹⁷ INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
¹⁸ Wuhan University, Wuhan 430072, People's Republic of China.
¹⁹ Ankara University, 06100 Tandogan, Ankara, Turkey.
²⁰ University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
²¹ Istanbul Bilgi University, 34060 Eyup, Istanbul, Turkey.
²² University of South China, Hengyang 421001, People's Republic of China.
²³ Nanjing University, Nanjing 210093, People's Republic of China.
²⁴ Lanzhou University, Lanzhou 730000, People's Republic of China.
²⁵ Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
²⁶ Liaoning University, Shenyang 110036, People's Republic of China.
²⁷ Nankai University, Tianjin 300071, People's Republic of China.
²⁸ Zhengzhou University, Zhengzhou 450001, People's Republic of China.
²⁹ University of Ferrara, I-44122 Ferrara, Italy.
³⁰ University of Eastern Piedmont, I-15121 Alessandria, Italy.
³¹ Tsinghua University, Beijing 100084, People's Republic of China.
³² Central China Normal University, Wuhan 430079, People's Republic of China.
³³ University of Minnesota, Minneapolis, Minnesota 55455, USA.
³⁴ GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany.
³⁵ Guangxi University, Nanning 530004, People's Republic of China.
³⁶ KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands.
³⁷ Henan Normal University, Xinxiang 453007, People's Republic of China.
³⁸ University of Hawaii, Honolulu, Hawaii 96822, USA.
³⁹ University of Science and Technology Liaoning, Anshan 114051, People's Republic of China.
⁴⁰ Shandong University, Jinan 250100, People's Republic of China.
⁴¹ University of the Punjab, Lahore-54590, Pakistan.
⁴² Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
⁴³ Huangshan College, Huangshan 245000, People's Republic of China.
⁴⁴ University of Jinan, Jinan 250022, People's Republic of China.
⁴⁵ University of Muenster, Wilhelm-Klemm-Straße 9, 48149 Muenster, Germany.
⁴⁶ Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
⁴⁷ Soochow University, Suzhou 215006, People's Republic of China.
⁴⁸ Seoul National University, Seoul 151-747, Korea.
⁴⁹ Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
⁵⁰ Hangzhou Normal University, Hangzhou 310036, People's Republic of China.
⁵¹ Beijing Institute of Petrochemical Technology, Beijing 102617, People's Republic of China.
⁵² China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China.
⁵³ Sichuan University, Chengdu 610064, People's Republic of China.
⁵⁴ Guangxi Normal University, Guilin 541004, People's Republic of China.
⁵⁵ Indian Institute of Technology Madras, Chennai 600036, India.
⁵⁶ Shanxi University, Taiyuan 030006, People's Republic of China.
⁵⁷ Henan University of Science and Technology, Luoyang 471003, People's Republic of China.
⁵⁸ Nanjing Normal University, Nanjing 210023, People's Republic of China.
⁵⁹ Zhejiang University, Hangzhou 310027, People's Republic of China.
⁶⁰ COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan.
⁶¹ INFN and University of Perugia, I-06100 Perugia, Italy.
⁶² Beihang University, Beijing 100191, People's Republic of China.
⁶³ Hunan Normal University, Changsha 410081, People's Republic of China.
⁶⁴ Uludag University, 16059 Bursa, Turkey.
⁶⁵ Near East University, Nicosia, North Cyprus, Mersin 10, Turkey.
⁶⁶ Hunan University, Changsha 410082, People's Republic of China.
⁶⁷ Xinyang Normal University, Xinyang 464000, People's Republic of China.

PMID: 29694170
DOI: 10.1103/PhysRevLett.120.132001

Abstract

The cross section of the e^{+}e^{-}→Λ_{c}^{+}Λ[over ¯]_{c}^{-} process is measured with unprecedented precision using data collected with the BESIII detector at sqrt[s]=4574.5, 4580.0, 4590.0 and 4599.5 MeV. The nonzero cross section near the Λ_{c}^{+}Λ[over ¯]_{c}^{-} production threshold is cleared. At center-of-mass energies sqrt[s]=4574.5 and 4599.5 MeV, the higher statistics data enable us to measure the Λ_{c} polar angle distributions. From these, the Λ_{c} electric over magnetic form-factor ratios (|G_{E}/G_{M}|) are measured for the first time. They are found to be 1.14±0.14±0.07 and 1.23±0.05±0.03, respectively, where the first uncertainties are statistical and the second are systematic.

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Precision Measurement of the e^{+}e^{-}→Λ_{c}^{+}Λ[over ¯]_{c}^{-} Cross Section Near Threshold

Affiliations

Precision Measurement of the e^{+}e^{-}→Λ_{c}^{+}Λ[over ¯]_{c}^{-} Cross Section Near Threshold

Authors

Affiliations

Abstract

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