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Ablikim M, Achasov MN, Adlarson P, et al. Complete Measurement of the Λ Electromagnetic Form Factors. Phys Rev Lett. 2019;123(12):122003doi: 10.1103/PhysRevLett.123.122003.
Ablikim, M., Achasov, M. N., Adlarson, P., 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, J. V., Berger, N., Bertani, M., Bettoni, D., Bianchi, F., Biernat, J., Bloms, J., Boyko, I., Briere, R. A., Cai, H., Cai, X., Calcaterra, A., 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., Felici, G., 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., 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., 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., 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., 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., Kappert, R., 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., Kurth, M. G., Kühn, W., Lange, J. S., Larin, P., Lavezzi, L., Leithoff, H., Lenz, T., Li, C., Li, C., Li, D. M., Li, F., Li, F. Y., Li, G., Li, H. B., Li, H. J., Li, J. C., Li, J. W., Li, K., Li, L. K., Li, L., Li, P. L., Li, P. R., Li, Q. Y., Li, W. D., Li, W. G., Li, X. H., Li, X. L., Li, X. N., Li, X. Q., Li, Z. B., Li, Z. Y., Liang, H., Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Liao, L. Z., Libby, J., Lin, C. X., Lin, D. X., Lin, Y. J., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, D. Y., Liu, F. H., Liu, F., Liu, F., Liu, H. B., Liu, H. M., Liu, H., Liu, H., Liu, J. B., Liu, J. Y., Liu, K. Y., Liu, K., Liu, Q., Liu, S. B., Liu, T., Liu, X., Liu, X. Y., Liu, Y. B., Liu, Z. A., Liu, Z., Long, Y. F., Lou, X. C., Lu, H. J., Lu, J. D., Lu, J. G., Lu, Y., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, P. W., Luo, T., Luo, X. L., Lusso, S., Lyu, X. R., Ma, F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, X. N., Ma, X. X., Ma, X. Y., Ma, Y. M., Maas, F. E., Maggiora, M., Maldaner, S., Malde, S., Malik, Q. A., Mangoni, A., Mao, Y. J., Mao, Z. P., Marcello, S., Meng, Z. X., Messchendorp, J. G., Mezzadri, G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Mo, Y. J., Morales Morales, C., Muchnoi, N. Y., Muramatsu, H., Mustafa, A., Nakhoul, S., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Papenbrock, M., Patteri, P., Pelizaeus, M., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Pitka, A., Poling, R., Prasad, V., Qi, M., Qi, T. Y., Qian, S., Qiao, C. F., Qin, N., Qin, X. P., Qin, X. S., Qin, Z. H., Qiu, J. F., Qu, S. Q., Rashid, K. H., Redmer, C. F., Richter, M., Ripka, M., Rivetti, A., Rodin, V., Rolo, M., Rong, G., Rosner, C., Rump, M., Sarantsev, A., Savrié, M., Schoenning, K., Shan, W., Shan, X. Y., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Shi, X., Shi, X. D., Song, J. J., Song, Q. Q., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sui, F. F., Sun, G. X., Sun, J. F., Sun, L., Sun, S. S., Sun, X. H., Sun, Y. J., Sun, Y. K., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tan, Y. T., Tang, C. J., Tang, G. Y., Tang, X., Thoren, V., Tsednee, B., Uman, I., Wang, B., Wang, B. L., Wang, C. W., Wang, D. Y., Wang, H. H., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, M. Z., Wang, M., Wang, P. L., Wang, R. M., Wang, W. P., Wang, X., Wang, X. F., Wang, X. L., Wang, Y., Wang, Y., Wang, Y. F., Wang, Z., Wang, Z. G., Wang, Z. Y., Wang, Z., Weber, T., Wei, D. H., Weidenkaff, P., Wen, H. W., Wen, S. P., Wiedner, U., Wilkinson, G., Wolke, M., Wu, L. H., Wu, L. J., Wu, Z., Xia, L., Xia, Y., Xiao, S. Y., Xiao, Y. J., Xiao, Z. J., Xie, Y. G., Xie, Y. H., Xing, T. Y., Xiong, X. A., Xiu, Q. L., Xu, G. F., Xu, J. J., Xu, L., Xu, Q. J., Xu, W., Xu, X. P., Yan, F., Yan, L., Yan, W. B., Yan, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, L., Yang, R. X., Yang, S. L., Yang, Y. H., Yang, Y. X., Yang, Y., Yang, Z. Q., Ye, M., Ye, M. H., Yin, J. H., You, Z. Y., Yu, B. X., Yu, C. X., Yu, J. S., Yuan, C. Z., Yuan, X. Q., Yuan, Y., Yuncu, A., Zafar, A. A., Zeng, Y., Zhang, B. X., Zhang, B. Y., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J., Zhang, J. L., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, K., Zhang, L., Zhang, S. F., Zhang, T. J., Zhang, X. Y., Zhang, Y., Zhang, Y. H., Zhang, Y. T., Zhang, Y., Zhang, Y., Zhang, Y., Zhang, Y., Zhang, Z. H., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, J. W., Zhao, J. Y., Zhao, J. Z., Zhao, L., Zhao, L., Zhao, M. G., Zhao, Q., Zhao, S. J., Zhao, T. C., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, Y., Zheng, Y. H., Zhong, B., Zhou, L., Zhou, L. P., Zhou, Q., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X., Zhou, X., Zhu, A. N., Zhu, J., Zhu, J., Zhu, K., Zhu, K. J., Zhu, S. H., Zhu, W. J., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zou, B. S., Zou, J. H. (2019). Complete Measurement of the Λ Electromagnetic Form Factors. Physical review letters, 123(12), 122003. https://doi.org/10.1103/PhysRevLett.123.122003
Ablikim, M, et al. "Complete Measurement of the Λ Electromagnetic Form Factors." Physical review letters vol. 123,12 (2019): 122003. doi: https://doi.org/10.1103/PhysRevLett.123.122003
Ablikim M, Achasov MN, Adlarson P, Ahmed S, Albrecht M, Alekseev M, Amoroso A, An FF, An Q, Bai Y, Bakina O, Baldini Ferroli R, Ban Y, Begzsuren K, Bennett JV, Berger N, Bertani M, Bettoni D, Bianchi F, Biernat J, Bloms J, Boyko I, Briere RA, Cai H, Cai X, Calcaterra A, Cao GF, Cao N, Cetin SA, Chai J, Chang JF, Chang WL, Chelkov G, Chen DY, Chen G, Chen HS, Chen JC, Chen ML, Chen SJ, Chen YB, Cheng W, Cibinetto G, Cossio F, Cui XF, Dai HL, Dai JP, Dai XC, Dbeyssi A, Dedovich D, Deng ZY, Denig A, Denysenko I, Destefanis M, De Mori F, Ding Y, Dong C, Dong J, Dong LY, Dong MY, Dou ZL, Du SX, Fan JZ, Fang J, Fang SS, Fang Y, Farinelli R, Fava L, Feldbauer F, Felici G, Feng CQ, Fritsch M, Fu CD, Fu Y, Gao Q, Gao XL, Gao Y, Gao Y, Gao YG, Gao Z, Garillon B, Garzia I, Gersabeck EM, Gilman A, Goetzen K, Gong L, Gong WX, Gradl W, Greco M, Gu LM, Gu MH, Gu S, Gu YT, Guo AQ, Guo LB, Guo RP, Guo YP, Guskov A, Han S, Hao XQ, Harris FA, He KL, Heinsius FH, Held T, Heng YK, Hou YR, Hou ZL, Hu HM, Hu JF, Hu T, Hu Y, Huang GS, Huang JS, Huang XT, Huang XZ, Huesken N, Hussain T, Ikegami Andersson W, Imoehl W, Irshad M, Ji Q, Ji QP, Ji XB, Ji XL, Jiang HL, Jiang XS, Jiang XY, Jiao JB, Jiao Z, Jin DP, Jin S, Jin Y, Johansson T, Kalantar-Nayestanaki N, Kang XS, Kappert R, Kavatsyuk M, Ke BC, Keshk IK, Khan T, Khoukaz A, Kiese P, Kiuchi R, Kliemt R, Koch L, Kolcu OB, Kopf B, Kuemmel M, Kuessner M, Kupsc A, Kurth M, Kurth MG, Kühn W, Lange JS, Larin P, Lavezzi L, Leithoff H, Lenz T, Li C, Li C, Li DM, Li F, Li FY, Li G, Li HB, Li HJ, Li JC, Li JW, Li K, Li LK, Li L, Li PL, Li PR, Li QY, Li WD, Li WG, Li XH, Li XL, Li XN, Li XQ, Li ZB, Li ZY, Liang H, Liang H, Liang YF, Liang YT, Liao GR, Liao LZ, Libby J, Lin CX, Lin DX, Lin YJ, Liu B, Liu BJ, Liu CX, Liu D, Liu DY, Liu FH, Liu F, Liu F, Liu HB, Liu HM, Liu H, Liu H, Liu JB, Liu JY, Liu KY, Liu K, Liu Q, Liu SB, Liu T, Liu X, Liu XY, Liu YB, Liu ZA, Liu Z, Long YF, Lou XC, Lu HJ, Lu JD, Lu JG, Lu Y, Lu YP, Luo CL, Luo MX, Luo PW, Luo T, Luo XL, Lusso S, Lyu XR, Ma FC, Ma HL, Ma LL, Ma MM, Ma QM, Ma XN, Ma XX, Ma XY, Ma YM, Maas FE, Maggiora M, Maldaner S, Malde S, Malik QA, Mangoni A, Mao YJ, Mao ZP, Marcello S, Meng ZX, Messchendorp JG, Mezzadri G, Min J, Min TJ, Mitchell RE, Mo XH, Mo YJ, Morales Morales C, Muchnoi NY, Muramatsu H, Mustafa A, Nakhoul S, Nefedov Y, Nerling F, Nikolaev IB, Ning Z, Nisar S, Niu SL, Olsen SL, Ouyang Q, Pacetti S, Pan Y, Papenbrock M, Patteri P, Pelizaeus M, Peng HP, Peters K, Pettersson J, Ping JL, Ping RG, Pitka A, Poling R, Prasad V, Qi M, Qi TY, Qian S, Qiao CF, Qin N, Qin XP, Qin XS, Qin ZH, Qiu JF, Qu SQ, Rashid KH, Redmer CF, Richter M, Ripka M, Rivetti A, Rodin V, Rolo M, Rong G, Rosner C, Rump M, Sarantsev A, Savrié M, Schoenning K, Shan W, Shan XY, Shao M, Shen CP, Shen PX, Shen XY, Sheng HY, Shi X, Shi XD, Song JJ, Song QQ, Song XY, Sosio S, Sowa C, Spataro S, Sui FF, Sun GX, Sun JF, Sun L, Sun SS, Sun XH, Sun YJ, Sun YK, Sun YZ, Sun ZJ, Sun ZT, Tan YT, Tang CJ, Tang GY, Tang X, Thoren V, Tsednee B, Uman I, Wang B, Wang BL, Wang CW, Wang DY, Wang HH, Wang K, Wang LL, Wang LS, Wang M, Wang MZ, Wang M, Wang PL, Wang RM, Wang WP, Wang X, Wang XF, Wang XL, Wang Y, Wang Y, Wang YF, Wang Z, Wang ZG, Wang ZY, Wang Z, Weber T, Wei DH, Weidenkaff P, Wen HW, Wen SP, Wiedner U, Wilkinson G, Wolke M, Wu LH, Wu LJ, Wu Z, Xia L, Xia Y, Xiao SY, Xiao YJ, Xiao ZJ, Xie YG, Xie YH, Xing TY, Xiong XA, Xiu QL, Xu GF, Xu JJ, Xu L, Xu QJ, Xu W, Xu XP, Yan F, Yan L, Yan WB, Yan WC, Yan YH, Yang HJ, Yang HX, Yang L, Yang RX, Yang SL, Yang YH, Yang YX, Yang Y, Yang ZQ, Ye M, Ye MH, Yin JH, You ZY, Yu BX, Yu CX, Yu JS, Yuan CZ, Yuan XQ, Yuan Y, Yuncu A, Zafar AA, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang J, Zhang JL, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang K, Zhang L, Zhang SF, Zhang TJ, Zhang XY, Zhang Y, Zhang YH, Zhang YT, Zhang Y, Zhang Y, Zhang Y, Zhang Y, Zhang ZH, Zhang ZP, Zhang ZY, Zhao G, Zhao JW, Zhao JY, Zhao JZ, Zhao L, Zhao L, Zhao MG, Zhao Q, Zhao SJ, Zhao TC, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng Y, Zheng YH, Zhong B, Zhou L, Zhou LP, Zhou Q, Zhou X, Zhou XK, Zhou XR, Zhou X, Zhou X, Zhu AN, Zhu J, Zhu J, Zhu K, Zhu KJ, Zhu SH, Zhu WJ, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zou BS, Zou JH. Complete Measurement of the Λ Electromagnetic Form Factors. Phys Rev Lett. 2019 Sep 20;123(12):122003. doi: 10.1103/PhysRevLett.123.122003. PMID: 31633986.
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Phys Rev Lett. 2019 Sep 20;123(12):122003. doi: 10.1103/PhysRevLett.123.122003.

Complete Measurement of the Λ Electromagnetic Form Factors.

Physical review letters

M Ablikim, M N Achasov, P Adlarson, S Ahmed, M Albrecht, M Alekseev, A Amoroso, F F An, Q An, Y Bai, O Bakina, R Baldini Ferroli, Y Ban, K Begzsuren, J V Bennett, N Berger, M Bertani, D Bettoni, F Bianchi, J Biernat, J Bloms, I Boyko, R A Briere, H Cai, X Cai, A Calcaterra, G F Cao, N Cao, S A Cetin, J Chai, J F Chang, W L Chang, G Chelkov, D Y Chen, G Chen, H S Chen, J C Chen, M L Chen, S J Chen, Y B Chen, W Cheng, G Cibinetto, F Cossio, X F Cui, H L Dai, J P Dai, X C Dai, A Dbeyssi, D Dedovich, Z Y Deng, A Denig, I Denysenko, M Destefanis, F De Mori, Y Ding, C Dong, J Dong, L Y Dong, M Y Dong, Z L Dou, S X Du, J Z Fan, J Fang, S S Fang, Y Fang, R Farinelli, L Fava, F Feldbauer, G Felici, C Q Feng, M Fritsch, C D Fu, Y Fu, Q Gao, X L Gao, Y Gao, Y Gao, Y G Gao, Z Gao, B Garillon, I Garzia, E M Gersabeck, A Gilman, K Goetzen, L Gong, W X Gong, W Gradl, M Greco, L M Gu, M H Gu, S Gu, Y T Gu, A Q Guo, L B Guo, R P Guo, Y P Guo, A Guskov, S Han, X Q Hao, F A Harris, K L He, F H Heinsius, T Held, Y K Heng, Y R Hou, Z L Hou, H M Hu, J F Hu, T Hu, Y Hu, G S Huang, J S Huang, X T Huang, X Z Huang, N Huesken, T Hussain, W Ikegami Andersson, W Imoehl, M Irshad, Q Ji, Q P Ji, X B Ji, X L Ji, H L Jiang, X S Jiang, X Y Jiang, J B Jiao, Z Jiao, D P Jin, S Jin, Y Jin, T Johansson, N Kalantar-Nayestanaki, X S Kang, R Kappert, M Kavatsyuk, B C Ke, I K Keshk, T Khan, A Khoukaz, P Kiese, R Kiuchi, R Kliemt, L Koch, O B Kolcu, B Kopf, M Kuemmel, M Kuessner, A Kupsc, M Kurth, M G Kurth, W Kühn, J S Lange, P Larin, L Lavezzi, H Leithoff, T Lenz, 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 H Li, X L Li, X N Li, X Q Li, Z B Li, Z Y Li, H Liang, H Liang, Y F Liang, Y T Liang, G R Liao, L Z Liao, J Libby, C X Lin, D X Lin, Y J Lin, B Liu, B J Liu, C X Liu, D Liu, D Y Liu, F H Liu, Fang Liu, Feng Liu, H B Liu, H M Liu, Huanhuan Liu, Huihui Liu, J B Liu, J Y Liu, K Y Liu, Ke Liu, Q Liu, S B Liu, T Liu, X Liu, X Y Liu, Y B Liu, Z A Liu, Zhiqing Liu, Y F Long, X C Lou, H J Lu, J D Lu, J G Lu, Y Lu, Y P Lu, C L Luo, M X Luo, P W Luo, T Luo, X L Luo, S Lusso, X R Lyu, F C Ma, H L Ma, L L Ma, M M Ma, Q M Ma, X N Ma, X X Ma, X Y Ma, Y M Ma, F E Maas, M Maggiora, S Maldaner, S Malde, Q A Malik, A Mangoni, Y J Mao, Z P Mao, S Marcello, Z X Meng, J G Messchendorp, G Mezzadri, J Min, T J Min, R E Mitchell, X H Mo, Y J Mo, C Morales Morales, N Yu Muchnoi, H Muramatsu, A Mustafa, S Nakhoul, Y Nefedov, F Nerling, I B Nikolaev, Z Ning, S Nisar, S L Niu, S L Olsen, Q Ouyang, S Pacetti, Y Pan, M Papenbrock, P Patteri, M Pelizaeus, H P Peng, K Peters, J Pettersson, J L Ping, R G Ping, A Pitka, R Poling, V Prasad, M Qi, T Y Qi, S Qian, C F Qiao, N Qin, X P Qin, X S Qin, Z H Qin, J F Qiu, S Q Qu, K H Rashid, C F Redmer, M Richter, M Ripka, A Rivetti, V Rodin, M Rolo, G Rong, Ch Rosner, M Rump, A Sarantsev, M Savrié, K Schoenning, W Shan, X Y Shan, M Shao, C P Shen, P X Shen, X Y Shen, H Y Sheng, X Shi, X D Shi, J J Song, Q Q Song, X Y Song, S Sosio, C Sowa, S Spataro, F F Sui, G X Sun, J F Sun, L Sun, S S Sun, X H Sun, Y J Sun, Y K Sun, Y Z Sun, Z J Sun, Z T Sun, Y T Tan, C J Tang, G Y Tang, X Tang, V Thoren, B Tsednee, I Uman, B Wang, B L Wang, C W Wang, D Y Wang, H H Wang, K Wang, L L Wang, L S Wang, M Wang, M Z Wang, Meng Wang, P L Wang, R M Wang, W P Wang, X Wang, X F Wang, X L Wang, Y Wang, Y Wang, Y F Wang, Z Wang, Z G Wang, Z Y Wang, Zongyuan Wang, T Weber, D H Wei, P Weidenkaff, H W Wen, S P Wen, U Wiedner, G Wilkinson, M Wolke, L H Wu, L J Wu, Z Wu, L Xia, Y Xia, S Y Xiao, Y J Xiao, Z J Xiao, Y G Xie, Y H Xie, T Y Xing, X A Xiong, Q L Xiu, G F Xu, J J Xu, L Xu, Q J Xu, W Xu, X P Xu, F Yan, L Yan, W B Yan, W C Yan, Y H Yan, H J Yang, H X Yang, L Yang, R X Yang, S L Yang, Y H Yang, Y X Yang, Yifan Yang, Z Q Yang, M Ye, M H Ye, J H Yin, Z Y You, B X Yu, C X Yu, J S Yu, C Z Yuan, X Q Yuan, Y Yuan, A Yuncu, A A Zafar, Y Zeng, B X Zhang, B Y Zhang, C C Zhang, D H Zhang, H H Zhang, H Y Zhang, J Zhang, J L Zhang, J Q Zhang, J W Zhang, J Y Zhang, J Z Zhang, K Zhang, L Zhang, S F Zhang, T J Zhang, X Y Zhang, Y Zhang, Y H Zhang, Y T Zhang, Yang Zhang, Yao Zhang, Yi Zhang, Yu Zhang, Z H Zhang, Z P Zhang, Z Y Zhang, G Zhao, J W Zhao, J Y Zhao, J Z Zhao, Lei Zhao, Ling Zhao, M G Zhao, Q Zhao, S J Zhao, T C Zhao, Y B Zhao, Z G Zhao, A Zhemchugov, B Zheng, J P Zheng, Y Zheng, Y H Zheng, B Zhong, L Zhou, L P Zhou, Q Zhou, X Zhou, X K Zhou, X R Zhou, Xiaoyu Zhou, Xu Zhou, A N Zhu, J Zhu, J Zhu, K Zhu, K J Zhu, S H Zhu, W J Zhu, X L Zhu, Y C Zhu, Y S Zhu, Z A Zhu, J Zhuang, B S Zou, J H Zou,

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. Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
  4. Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
  5. Bochum Ruhr-University, D-44780 Bochum, Germany.
  6. University of Turin, I-10125, Turin, Italy.
  7. INFN, I-10125 Turin, Italy.
  8. State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
  9. University of Science and Technology of China, Hefei 230026, People's Republic of China.
  10. Southeast University, Nanjing 211100, People's Republic of China.
  11. Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  12. INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
  13. Peking University, Beijing 100871, People's Republic of China.
  14. Institute of Physics and Technology, Peace Avenue 54B, Ulaanbaatar 13330, Mongolia.
  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. University of Muenster, Wilhelm-Klemm-Strasse 9, 48149 Muenster, Germany.
  19. Wuhan University, Wuhan 430072, People's Republic of China.
  20. University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  21. Istanbul Bilgi University, 34060 Eyup, Istanbul, Turkey.
  22. Central China Normal University, Wuhan 430079, People's Republic of China.
  23. Nanjing University, Nanjing 210093, People's Republic of China.
  24. Nankai University, Tianjin 300071, 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. Zhengzhou University, Zhengzhou 450001, People's Republic of China.
  28. Tsinghua University, Beijing 100084, People's Republic of China.
  29. University of Ferrara, I-44122 Ferrara, Italy.
  30. University of Eastern Piedmont, I-15121 Alessandria, Italy.
  31. University of South China, Hengyang 421001, People's Republic of China.
  32. University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom.
  33. University of Minnesota, Minneapolis, Minnesota 55455, USA.
  34. GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany.
  35. Beihang University, Beijing 100191, People's Republic of China.
  36. Guangxi University, Nanning 530004, People's Republic of China.
  37. Indiana University, Bloomington, Indiana 47405, USA.
  38. Nanjing Normal University, Nanjing 210023, People's Republic of China.
  39. Shandong Normal University, Jinan 250014, People's Republic of China.
  40. Henan Normal University, Xinxiang 453007, People's Republic of China.
  41. University of Hawaii, Honolulu, Hawaii 96822, USA.
  42. Shandong University, Jinan 250100, People's Republic of China.
  43. University of the Punjab, Lahore-54590, Pakistan.
  44. Huangshan College, Huangshan 245000, People's Republic of China.
  45. University of Jinan, Jinan 250022, People's Republic of China.
  46. KVI-CART, University of Groningen, NL-9747 AA Groningen, Netherlands.
  47. Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
  48. Fudan University, Shanghai 200443, People's Republic of China.
  49. Soochow University, Suzhou 215006, People's Republic of China.
  50. Beijing Institute of Petrochemical Technology, Beijing 102617, People's Republic of China.
  51. Lanzhou University, Lanzhou 730000, People's Republic of China.
  52. Sun Yat-Sen University, Guangzhou 510275, 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. Zhejiang University, Hangzhou 310027, People's Republic of China.
  59. University of Oxford, Keble Rd, Oxford OX13RH, United Kingdom.
  60. INFN and University of Perugia, I-06100 Perugia, Italy.
  61. COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan.
  62. Hunan Normal University, Changsha 410081, People's Republic of China.
  63. Near East University, Nicosia, North Cyprus, Mersin 10, Turkey.
  64. Xinyang Normal University, Xinyang 464000, People's Republic of China.
  65. Hunan University, Changsha 410082, People's Republic of China.
  66. Hangzhou Normal University, Hangzhou 310036, People's Republic of China.
  67. China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China.
  68. University of Science and Technology Liaoning, Anshan 114051, People's Republic of China.

PMID: 31633986 DOI: 10.1103/PhysRevLett.123.122003

Abstract

The exclusive process e^{+}e^{-}→ΛΛ[over ¯], with Λ→pπ^{-} and Λ[over ¯]→p[over ¯]π^{+}, has been studied at sqrt[s]=2.396  GeV for measurement of the timelike Λ electric and magnetic form factors, G_{E} and G_{M}. A data sample, corresponding to an integrated luminosity of 66.9  pb^{-1}, was collected with the BESIII detector for this purpose. A multidimensional analysis with a complete decomposition of the spin structure of the reaction enables a determination of the modulus of the ratio R=|G_{E}/G_{M}| and, for the first time for any baryon, the relative phase ΔΦ=Φ_{E}-Φ_{M}. The resulting values are R=0.96±0.14(stat)±0.02(syst) and ΔΦ=37°±12°(stat)±6°(syst), respectively. These are obtained using the recently established and most precise value of the asymmetry parameter α_{Λ}=0.750±0.010 measured by BESIII. In addition, the cross section is measured with unprecedented precision to be σ=118.7±5.3(stat)±5.1(syst)  pb, which corresponds to an effective form factor of |G|=0.123±0.003(stat)±0.003(syst). The contribution from two-photon exchange is found to be negligible. Our result enables the first complete determination of baryon timelike electromagnetic form factors.

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