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Ablikim M, Achasov MN, Ai XC, et al. Measurement of the Absolute Branching Fraction for Λ_{c}^{+}→Λe^{+}ν_{e}. Phys Rev Lett. 2015;115(22):221805doi: 10.1103/PhysRevLett.115.221805.
Ablikim, M., Achasov, M. N., 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., 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. 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., Fava, L., Fedorov, O., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, X. Y., Gao, Y., Gao, Z., Garzia, I., Goetzen, K., Gong, W. X., Gradl, W., Greco, M., Gu, M. H., Gu, Y. T., Guan, Y. H., Guo, A. Q., Guo, L. B., Guo, Y., Guo, Y. P., Haddadi, Z., Hafner, A., Han, S., Hao, X. Q., Harris, F. A., He, K. L., Held, T., Heng, Y. K., Hou, Z. L., Hu, C., Hu, H. M., Hu, J. F., Hu, T., Hu, Y., Huang, G. M., Huang, G. S., Huang, J. S., Huang, X. T., Huang, Y., 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., Kuehn, W., Kupsc, A., Lange, J. S., Lara, M., Larin, P., Leng, C., Li, C., Li, C., Li, D. M., Li, F., Li, F. Y., Li, G., Li, H. B., Li, J. C., Li, J., Li, K., Li, K., Li, L., Li, P. R., Li, T., Li, W. D., Li, W. G., Li, X. L., Li, X. M., Li, X. N., Li, X. Q., Li, Z. B., Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Lin, D. X., Liu, B. J., Liu, C. 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F., Ripka, M., Rong, G., Rosner, C., Ruan, X. D., Santoro, V., Sarantsev, A., Savrié, M., Schoenning, K., Schumann, S., Shan, W., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Song, W. M., Song, X. Y., Sosio, S., Spataro, S., Sun, G. X., Sun, J. F., Sun, S. S., Sun, Y. J., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tang, C. J., Tang, X., Tapan, I., Thorndike, E. H., Tiemens, M., Ullrich, M., Uman, I., Varner, G. S., Wang, B., Wang, B. L., Wang, D., Wang, D. Y., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, P., Wang, P. L., Wang, S. G., Wang, W., Wang, W. P., Wang, X. F., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. H., Wang, Z. Y., Weber, T., Wei, D. H., Wei, J. B., Weidenkaff, P., Wen, S. P., Wiedner, U., Wolke, M., Wu, L. H., Wu, Z., Xia, L., Xia, L. G., Xia, Y., Xiao, D., Xiao, H., Xiao, Z. J., Xie, Y. G., Xiu, Q. L., Xu, G. F., Xu, L., Xu, Q. J., Xu, Q. N., Xu, X. P., Yan, L., Yan, W. B., Yan, W. C., Yan, Y. H., Yang, H. J., Yang, H. 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Measurement of the Absolute Branching Fraction for Λ_{c}^{+}→Λe^{+}ν_{e}. Physical review letters, 115(22), 221805. https://doi.org/10.1103/PhysRevLett.115.221805
Ablikim, M, et al. "Measurement of the Absolute Branching Fraction for Λ_{c}^{+}→Λe^{+}ν_{e}." Physical review letters vol. 115,22 (2015): 221805. doi: https://doi.org/10.1103/PhysRevLett.115.221805
Ablikim M, Achasov MN, Ai XC, Albayrak O, Albrecht M, Ambrose DJ, Amoroso A, An FF, An Q, Bai JZ, Baldini Ferroli R, Ban Y, Bennett DW, Bennett JV, Bertani M, Bettoni D, Bian JM, Bianchi F, Boger E, Boyko I, Briere RA, Cai H, Cai X, Cakir O, Calcaterra A, Cao GF, Cetin SA, Chang JF, Chelkov G, Chen G, Chen HS, Chen HY, Chen JC, Chen ML, Chen SJ, Chen X, Chen XR, Chen YB, Cheng HP, Chu XK, Cibinetto G, Dai HL, Dai JP, 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, Duan PF, Fan JZ, Fang J, Fang SS, Fang X, Fang Y, Fava L, Fedorov O, Feldbauer F, Felici G, Feng CQ, Fioravanti E, Fritsch M, Fu CD, Gao Q, Gao XL, Gao XY, Gao Y, Gao Z, Garzia I, Goetzen K, Gong WX, Gradl W, Greco M, Gu MH, Gu YT, Guan YH, Guo AQ, Guo LB, Guo Y, Guo YP, Haddadi Z, Hafner A, Han S, Hao XQ, Harris FA, He KL, Held T, Heng YK, Hou ZL, Hu C, Hu HM, Hu JF, Hu T, Hu Y, Huang GM, Huang GS, Huang JS, Huang XT, Huang Y, Hussain T, Ji Q, Ji QP, Ji XB, Ji XL, Jiang LW, Jiang XS, Jiang XY, Jiao JB, Jiao Z, Jin DP, Jin S, Johansson T, Julin A, Kalantar-Nayestanaki N, Kang XL, Kang XS, Kavatsyuk M, Ke BC, Kiese P, Kliemt R, Kloss B, Kolcu OB, Kopf B, Kornicer M, Kuehn W, Kupsc A, Lange JS, Lara M, Larin P, Leng C, Li C, Li C, Li DM, Li F, Li FY, Li G, Li HB, Li JC, Li J, Li K, Li K, Li L, Li PR, Li T, Li WD, Li WG, Li XL, Li XM, Li XN, Li XQ, Li ZB, Liang H, Liang YF, Liang YT, Liao GR, Lin DX, Liu BJ, Liu CX, Liu D, Liu FH, Liu F, Liu F, Liu HB, Liu HH, Liu HH, Liu HM, Liu J, Liu JB, Liu JP, Liu JY, Liu K, Liu KY, Liu LD, Liu PL, Liu Q, Liu SB, Liu X, Liu YB, Liu ZA, Liu Z, Lou XC, Lu HJ, Lu JG, Lu Y, Lu YP, Luo CL, Luo MX, Luo T, Luo XL, Lyu XR, Ma FC, Ma HL, Ma LL, Ma QM, Ma T, Ma XN, Ma XY, Maas FE, Maggiora M, Mao YJ, Mao ZP, Marcello S, Messchendorp JG, Min J, Mitchell RE, Mo XH, Mo YJ, Morales Morales C, Muchnoi NY, Muramatsu H, Nefedov Y, Nerling F, Nikolaev IB, Ning Z, Nisar S, Niu SL, Niu XY, Olsen SL, Ouyang Q, Pacetti S, Pan Y, Patteri P, Pelizaeus M, Peng HP, Peters K, Pettersson J, Ping JL, Ping RG, Poling R, Prasad V, Qi HR, Qi M, Qian S, Qiao CF, Qin LQ, Qin N, Qin XS, Qin ZH, Qiu JF, Rashid KH, Redmer CF, Ripka M, Rong G, Rosner C, Ruan XD, Santoro V, Sarantsev A, Savrié M, Schoenning K, Schumann S, Shan W, Shao M, Shen CP, Shen PX, Shen XY, Sheng HY, Song WM, Song XY, Sosio S, Spataro S, Sun GX, Sun JF, Sun SS, Sun YJ, Sun YZ, Sun ZJ, Sun ZT, Tang CJ, Tang X, Tapan I, Thorndike EH, Tiemens M, Ullrich M, Uman I, Varner GS, Wang B, Wang BL, Wang D, Wang DY, Wang K, Wang LL, Wang LS, Wang M, Wang P, Wang PL, Wang SG, Wang W, Wang WP, Wang XF, Wang YD, Wang YF, Wang YQ, Wang Z, Wang ZG, Wang ZH, Wang ZY, Weber T, Wei DH, Wei JB, Weidenkaff P, Wen SP, Wiedner U, Wolke M, Wu LH, Wu Z, Xia L, Xia LG, Xia Y, Xiao D, Xiao H, Xiao ZJ, Xie YG, Xiu QL, Xu GF, Xu L, Xu QJ, Xu QN, Xu XP, Yan L, Yan WB, Yan WC, Yan YH, Yang HJ, Yang HX, Yang L, Yang Y, Yang YX, Ye M, Ye MH, Yin JH, Yu BX, Yu CX, Yu JS, Yuan CZ, Yuan WL, Yuan Y, Yuncu A, Zafar AA, Zallo A, Zeng Y, Zeng Z, Zhang BX, Zhang BY, Zhang C, Zhang CC, Zhang DH, Zhang HH, Zhang HY, Zhang JJ, Zhang JL, Zhang JQ, Zhang JW, Zhang JY, Zhang JZ, Zhang K, Zhang L, Zhang XY, Zhang Y, Zhang YH, Zhang YN, Zhang YT, 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 QW, Zhao SJ, Zhao TC, Zhao YB, Zhao ZG, Zhemchugov A, Zheng B, Zheng JP, Zheng WJ, Zheng YH, Zhong B, Zhou L, Zhou X, Zhou XK, Zhou XR, Zhou XY, Zhu K, Zhu KJ, Zhu S, Zhu SH, Zhu XL, Zhu YC, Zhu YS, Zhu ZA, Zhuang J, Zotti L, Zou BS, Zou JH. Measurement of the Absolute Branching Fraction for Λ_{c}^{+}→Λe^{+}ν_{e}. Phys Rev Lett. 2015 Nov 27;115(22):221805. doi: 10.1103/PhysRevLett.115.221805. Epub 2015 Nov 25. PMID: 26650293.
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Phys Rev Lett. 2015 Nov 27;115(22):221805. doi: 10.1103/PhysRevLett.115.221805. Epub 2015 Nov 25.

Measurement of the Absolute Branching Fraction for Λ_{c}^{+}→Λe^{+}ν_{e}.

Physical review letters

M Ablikim, M N Achasov, X C Ai, O Albayrak, M Albrecht, D J Ambrose, A Amoroso, F F An, Q An, J Z Bai, R Baldini Ferroli, Y Ban, D W Bennett, J V Bennett, M Bertani, D Bettoni, J M Bian, F Bianchi, E Boger, I Boyko, R A Briere, H Cai, X Cai, O Cakir, A Calcaterra, G F Cao, S A Cetin, J F Chang, G Chelkov, G Chen, H S Chen, H Y Chen, J C Chen, M L Chen, S J Chen, X Chen, X R Chen, Y B Chen, H P Cheng, X K Chu, G Cibinetto, H L Dai, J P 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, P F Duan, J Z Fan, J Fang, S S Fang, X Fang, Y Fang, L Fava, O Fedorov, F Feldbauer, G Felici, C Q Feng, E Fioravanti, M Fritsch, C D Fu, Q Gao, X L Gao, X Y Gao, Y Gao, Z Gao, I Garzia, K Goetzen, W X Gong, W Gradl, M Greco, M H Gu, Y T Gu, Y H Guan, A Q Guo, L B Guo, Y Guo, Y P Guo, Z Haddadi, A Hafner, S Han, X Q Hao, F A Harris, K L He, T Held, Y K Heng, Z L Hou, C Hu, H M Hu, J F Hu, T Hu, Y Hu, G M Huang, G S Huang, J S Huang, X T Huang, Y Huang, T Hussain, Q Ji, Q P Ji, X B Ji, X L Ji, L W Jiang, X S Jiang, X Y Jiang, J B Jiao, Z Jiao, D P Jin, S Jin, T Johansson, A Julin, N Kalantar-Nayestanaki, X L Kang, X S Kang, M Kavatsyuk, B C Ke, P Kiese, R Kliemt, B Kloss, O B Kolcu, B Kopf, M Kornicer, W Kuehn, A Kupsc, J S Lange, M Lara, P Larin, C Leng, C Li, Cheng Li, D M Li, F Li, F Y Li, G Li, H B Li, J C Li, Jin Li, K Li, K Li, Lei Li, P R Li, T Li, W D Li, W G Li, X L Li, X M Li, X N Li, X Q Li, Z B Li, H Liang, Y F Liang, Y T Liang, G R Liao, D X Lin, B J Liu, C X Liu, D Liu, F H Liu, Fang Liu, Feng Liu, H B Liu, H H Liu, H H Liu, H M Liu, J Liu, J B Liu, J P Liu, J Y Liu, K Liu, K Y Liu, L D Liu, P L Liu, Q Liu, S B Liu, X Liu, Y B Liu, Z A Liu, Zhiqing Liu, X C Lou, H J Lu, J G Lu, Y Lu, Y P Lu, C L Luo, M X Luo, T Luo, X L Luo, X R Lyu, F C Ma, H L Ma, L L Ma, Q M Ma, T Ma, X N Ma, X Y Ma, F E Maas, M Maggiora, Y J Mao, Z P Mao, S Marcello, J G Messchendorp, J Min, R E Mitchell, X H Mo, Y J Mo, C Morales Morales, N Yu Muchnoi, H Muramatsu, Y Nefedov, F Nerling, I B Nikolaev, Z Ning, S Nisar, S L Niu, X Y Niu, S L Olsen, Q Ouyang, S Pacetti, Y Pan, P Patteri, M Pelizaeus, H P Peng, K Peters, J Pettersson, J L Ping, R G Ping, R Poling, V Prasad, H R Qi, M Qi, S Qian, C F Qiao, L Q Qin, N Qin, X S Qin, Z H Qin, J F Qiu, K H Rashid, C F Redmer, M Ripka, G Rong, Ch Rosner, X D Ruan, V Santoro, A Sarantsev, M Savrié, K Schoenning, S Schumann, W Shan, M Shao, C P Shen, P X Shen, X Y Shen, H Y Sheng, W M Song, X Y Song, S Sosio, S Spataro, G X Sun, J F Sun, S S Sun, Y J Sun, Y Z Sun, Z J Sun, Z T Sun, C J Tang, X Tang, I Tapan, E H Thorndike, M Tiemens, M Ullrich, I Uman, G S Varner, B Wang, B L Wang, D Wang, D Y Wang, K Wang, L L Wang, L S Wang, M Wang, P Wang, P L Wang, S G Wang, W Wang, W P Wang, X F Wang, Y D Wang, Y F Wang, Y Q Wang, Z Wang, Z G Wang, Z H Wang, Z Y Wang, T Weber, D H Wei, J B Wei, P Weidenkaff, S P Wen, U Wiedner, M Wolke, L H Wu, Z Wu, L Xia, L G Xia, Y Xia, D Xiao, H Xiao, Z J Xiao, Y G Xie, Q L Xiu, G F Xu, L Xu, Q J Xu, Q N Xu, X P Xu, L Yan, W B Yan, W C Yan, Y H Yan, H J Yang, H X Yang, L Yang, Y Yang, Y X Yang, M Ye, M H Ye, J H Yin, B X Yu, C X Yu, J S Yu, C Z Yuan, W L Yuan, Y Yuan, A Yuncu, A A Zafar, A Zallo, Y Zeng, Z Zeng, B X Zhang, B Y Zhang, C Zhang, C C Zhang, D H Zhang, H H Zhang, H Y Zhang, J J Zhang, J L Zhang, J Q Zhang, J W Zhang, J Y Zhang, J Z Zhang, K Zhang, L Zhang, X Y Zhang, Y Zhang, Y H Zhang, Y N Zhang, Y T 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, Q W Zhao, S J Zhao, T C Zhao, Y B Zhao, Z G Zhao, A Zhemchugov, B Zheng, J P Zheng, W J Zheng, Y H Zheng, B Zhong, L Zhou, X Zhou, X K Zhou, X R Zhou, X Y Zhou, K Zhu, K J Zhu, S Zhu, S H Zhu, X L Zhu, Y C Zhu, Y S Zhu, Z A Zhu, J Zhuang, L Zotti, 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. Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
  4. Bochum Ruhr-University, D-44780 Bochum, Germany.
  5. University of Rochester, Rochester, New York 14627, USA.
  6. University of Turin, I-10125 Turin, Italy.
  7. INFN, I-10125 Turin, Italy.
  8. University of Science and Technology of China, Hefei 230026, People's Republic of China.
  9. INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
  10. Peking University, Beijing 100871, People's Republic of China.
  11. Indiana University, Bloomington, Indiana 47405, USA.
  12. INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
  13. University of Minnesota, Minneapolis, Minnesota 55455, USA.
  14. Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia.
  15. Wuhan University, Wuhan 430072, People's Republic of China.
  16. Istanbul Aydin University, 34295 Sefakoy, Istanbul, Turkey.
  17. Istanbul Bilgi University, 34060 Eyup, Istanbul, Turkey.
  18. Beihang University, Beijing 100191, People's Republic of China.
  19. Nanjing University, Nanjing 210093, People's Republic of China.
  20. Lanzhou University, Lanzhou 730000, People's Republic of China.
  21. Huangshan College, Huangshan 245000, People's Republic of China.
  22. Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
  23. Helmholtz Institute Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
  24. Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
  25. Liaoning University, Shenyang 110036, People's Republic of China.
  26. Nankai University, Tianjin 300071, 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 Eastern Piedmont, I-15121 Alessandria, Italy.
  30. GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany.
  31. GuangXi University, Nanning 530004, People's Republic of China.
  32. Nanjing Normal University, Nanjing 210023, People's Republic of China.
  33. KVI-CART, University of Groningen, NL-9747 AA Groningen, The Netherlands.
  34. Henan Normal University, Xinxiang 453007, People's Republic of China.
  35. University of Hawaii, Honolulu, Hawaii 96822, USA.
  36. Central China Normal University, Wuhan 430079, People's Republic of China.
  37. Shandong University, Jinan 250100, People's Republic of China.
  38. University of the Punjab, Lahore-54590, Pakistan.
  39. Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
  40. Justus Liebig University Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
  41. Seoul National University, Seoul 151-747 Korea.
  42. Hangzhou Normal University, Hangzhou 310036, People's Republic of China.
  43. Beijing Institute of Petrochemical Technology, Beijing 102617, People's Republic of China.
  44. University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  45. Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
  46. Sichuan University, Chengdu 610064, People's Republic of China.
  47. Guangxi Normal University, Guilin 541004, People's Republic of China.
  48. Shanxi University, Taiyuan 030006, People's Republic of China.
  49. Henan University of Science and Technology, Luoyang 471003, People's Republic of China.
  50. Zhejiang University, Hangzhou 310027, People's Republic of China.
  51. COMSATS Institute of Information Technology, Lahore, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan.
  52. INFN and University of Perugia, I-06100 Perugia, Italy.
  53. University of Ferrara, I-44122 Ferrara, Italy.
  54. Uludag University, 16059 Bursa, Turkey.
  55. Hunan University, Changsha 410082, People's Republic of China.
  56. University of South China, Hengyang 421001, People's Republic of China.
  57. Soochow University, Suzhou 215006, People's Republic of China.
  58. China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China.
  59. University of Science and Technology Liaoning, Anshan 114051, People's Republic of China.

PMID: 26650293 DOI: 10.1103/PhysRevLett.115.221805

Abstract

We report the first measurement of the absolute branching fraction for Λ_{c}^{+}→Λe^{+}ν_{e}. This measurement is based on 567  pb^{-1} of e^{+}e^{-} annihilation data produced at sqrt[s]=4.599  GeV, which is just above the Λ_{c}^{+}Λ[over ¯]_{c}^{-} threshold. The data were collected with the BESIII detector at the BEPCII storage rings. The branching fraction is determined to be B(Λ_{c}^{+}→Λe^{+}ν_{e})=[3.63±0.38(stat)±0.20(syst)]%, representing a significant improvement in precision over the current indirect determination. As the branching fraction for Λ_{c}^{+}→Λe^{+}ν_{e} is the benchmark for those of other Λ_{c}^{+} semileptonic channels, our result provides a unique test of different theoretical models, which is the most stringent to date.

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