Observation of e⁺e⁻→ηJ/ψ at center-of-mass energy √s=4.009 GeV

Ablikim, M.; Achasov, M. N.; Ambrose, D. J.; An, F. F.; An, Q.; An, Z. H.; Bai, J. Z.; Ban, Y.; Becker, J.; Bennett, J. V.; Bertani, M.; Bian, J. M.; Boger, E.; Bondarenko, O.; Boyko, I.; Briere, R. A.; Bytev, V.; Cai, X.; Cakir, O.; Calcaterra, A.; Cao, G. F.; Cetin, S. A.; Chang, J. F.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, S. J.; Chen, Y. B.; Cheng, H. P.; Chu, Y. P.; Cronin-Hennessy, D.; Dai, H. L.; Dai, J. P.; Dedovich, D.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; Ding, W. M.; Ding, Y.; Dong, L. Y.; Dong, M. Y.; Du, S. X.; Fang, J.; Fang, S. S.; Fava, L.; Feldbauer, F.; Feng, C. Q.; Ferroli, R. B.; Fu, C. D.; Fu, J. L.; Gao, Y.; Geng, C.; 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. P.; Han, Y. L.; Harris, F. A.; He, K. L.; He, M.; He, Z. Y.; Held, T.; Heng, Y. K.; Hou, Z. L.; Hu, H. M.; Hu, J. F.; Hu, T.; Huang, G. M.; Huang, J. S.; Huang, X. T.; Huang, Y. P.; Hussain, T.; Ji, C. S.; Ji, Q.; Ji, X. B.; Ji, X. L.; Jiang, L. L.; Jiang, X. S.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Jing, F. F.; Kalantar-Nayestanaki, N.; Kavatsyuk, M.; Kuehn, W.; Lai, W.; Lange, J. S.; Li, C. H.; Li, Cheng; Li, Cui; Li, D. M.; Li, F.; Li, G.; Li, H. B.; Li, J. C.; Li, K.; Li, Lei; Li, Q. J.; Li, S. L.; Li, W. D.; Li, W. G.; Li, X. L.; Li, X. N.; Li, X. Q.; Li, X. R.; Li, Z. B.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, G. R.; Liao, X. T.; Liu, B. J.; Liu, C. L.; Liu, C. X.; Liu, C. Y.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, H.; Liu, H. B.; Liu, H. H.; Liu, H. M.; Liu, H. W.; Liu, J. P.; Liu, K. Y.; Liu, Kai; Liu, P. L.; Liu, Q.; Liu, S. B.; Liu, X.; Liu, X. H.; Liu, Y. B.; Liu, Z. A.; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H.; Lu, G. R.; Lu, H. J.; Lu, J. G.; Lu, Q. W.; Lu, X. R.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X. L.; Lv, M.; Ma, C. L.; Ma, F. C.; Ma, H. L.; Ma, Q. M.; Ma, S.; Ma, T.; Ma, X. Y.; Ma, Y.; Maas, F. E.; Maggiora, M.; Malik, Q. A.; Mao, Y. J.; Mao, Z. P.; Messchendorp, J. G.; Min, J.; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Morales, C. Morales; Motzko, C.; Muchnoi, N. Yu.; Muramatsu, H.; Nefedov, Y.; Nicholson, C.; Nikolaev, I. B.; Ning, Z.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Park, J. W.; Pelizaeus, M.; Peng, H. P.; Peters, K.; Ping, J. L.; Ping, R. G.; Poling, R.; Prencipe, E.; Qi, M.; Qian, S.; Qiao, C. F.; Qin, X. S.; Qin, Y.; Qin, Z. H.; Qiu, J. F.; Rashid, K. H.; Rong, G.; Ruan, X. D.; Sarantsev, A.; Schaefer, B. D.; Schulze, J.; Shao, M.; Shen, C. P.; Shen, X. Y.; Sheng, H. Y.; Shepherd, M. R.; Song, W. M.; Song, X. Y.; Spataro, S.; Spruck, B.; Sun, D. H.; 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.; Toth, D.; Ullrich, M.; Varner, G. S.; Wang, B.; Wang, B. Q.; Wang, K.; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, P.; Wang, P. L.; Wang, Q.; Wang, Q. J.; Wang, S. G.; Wang, X. L.; Wang, Y. D.; Wang, Y. F.; Wang, Y. Q.; Wang, Z.; Wang, Z. G.; Wang, Z. Y.; Wei, D. H.; Weidenkaff, P.; Wen, Q. G.; Wen, S. P.; Werner, M.; Wiedner, U.; Wu, L. H.; Wu, N.; Wu, S. X.; Wu, W.; Wu, Z.; Xia, L. G.; Xiao, Z. J.; Xie, Y. G.; Xiu, Q. L.; Xu, G. F.; Xu, G. M.; Xu, H.; Xu, Q. J.; Xu, X. P.; Xu, Z. R.; Xue, F.; Xue, Z.; Yan, L.; Yan, W. B.; Yan, Y. H.; Yang, H. X.; Yang, Y.; Yang, Y. X.; Ye, H.; Ye, M.; Ye, M. H.; Yu, B. X.; Yu, C. X.; Yu, J. S.; Yu, S. P.; Yuan, C. Z.; Yuan, Y.; Zafar, A. A.; Zallo, A.; Zeng, Y.; Zhang, B. X.; Zhang, B. Y.; Zhang, C. C.; Zhang, D. H.; Zhang, H. H.; Zhang, H. Y.; Zhang, J. Q.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, S. H.; Zhang, X. J.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. H.; Zhang, Y. S.; Zhang, Z. P.; Zhang, Z. Y.; Zhao, G.; Zhao, H. S.; Zhao, J. W.; Zhao, K. X.; Zhao, Lei; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, S. J.; Zhao, T. C.; Zhao, X. H.; Zhao, Y. B.; Zhao, Z. G.; Zhemchugov, A.; Zheng, B.; Zheng, J. P.; Zheng, Y. H.; Zhong, B.; Zhong, J.; Zhou, L.; Zhou, X. K.; Zhou, X. R.; Zhu, C.; Zhu, K.; Zhu, K. J.; Zhu, S. H.; Zhu, X. L.; Zhu, X. W.; Zhu, Y. C.; Zhu, Y. M.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.

doi:10.1103/PhysRevD.86.071101

Title: Observation of e⁺e⁻→ηJ/ψ at center-of-mass energy √s=4.009 GeV

Abstract

Using a 478 pb⁻¹ data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider storage ring at a center-of-mass energy of s√=4.009 GeV, the production of e⁺e⁻→ηJ/ψ is observed for the first time with a statistical significance of greater than 10σ. The Born cross section is measured to be (32.1±2.8±1.3) pb, where the first error is statistical and the second systematic. Assuming the ηJ/ψ signal is from a hadronic transition of the ψ(4040), the fractional transition rate is determined to be B(ψ(4040)→ηJ/ψ)=(5.2±0.5±0.2±0.5)×10⁻³, where the first, second, and third errors are statistical, systematic, and the uncertainty from the ψ(4040) resonant parameters, respectively. The production of e⁺e⁻→π0J/ψ is searched for, but no significant signal is observed, and B(ψ(4040)→π⁰J/ψ)<2.8×10⁻⁴ is obtained at the 90% confidence level.

Authors:: Ablikim, M.; Achasov, M. N.; Ambrose, D. J.; An, F. F.; An, Q.; An, Z. H.; Bai, J. Z.; Ban, Y.; Becker, J.; Bennett, J. V.; Bertani, M.; Bian, J. M.; Boger, E.; Bondarenko, O.; Boyko, I.; Briere, R. A.; Bytev, V.; Cai, X.; Cakir, O.; Calcaterra, A. more »« less

Publication Date:: Mon Oct 01 00:00:00 EDT 2012

Sponsoring Org.:: USDOE

OSTI Identifier:: 1103423

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Physical Review. D, Particles, Fields, Gravitation and Cosmology

Additional Journal Information:: Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Journal Volume: 86 Journal Issue: 7; Journal ID: ISSN 1550-7998

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Citation Formats


                    Ablikim, M., Achasov, M. N., Ambrose, D. J., An, F. F., An, Q., An, Z. H., Bai, J. Z., Ban, Y., Becker, J., Bennett, J. V., Bertani, M., Bian, J. M., Boger, E., Bondarenko, O., Boyko, I., Briere, R. A., Bytev, V., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, S. J., Chen, Y. B., Cheng, H. P., Chu, Y. P., Cronin-Hennessy, D., Dai, H. L., Dai, J. P., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., Ding, W. M., Ding, Y., Dong, L. Y., Dong, M. Y., Du, S. X., Fang, J., Fang, S. S., Fava, L., Feldbauer, F., Feng, C. Q., Ferroli, R. B., Fu, C. D., Fu, J. L., Gao, Y., Geng, C., 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. P., Han, Y. L., Harris, F. A., He, K. L., He, M., He, Z. Y., Held, T., Heng, Y. K., Hou, Z. L., Hu, H. M., Hu, J. F., Hu, T., Huang, G. M., Huang, J. S., Huang, X. T., Huang, Y. P., Hussain, T., Ji, C. S., Ji, Q., Ji, X. B., Ji, X. L., Jiang, L. L., Jiang, X. S., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Jing, F. F., Kalantar-Nayestanaki, N., Kavatsyuk, M., Kuehn, W., Lai, W., Lange, J. S., Li, C. H., Li, Cheng, Li, Cui, Li, D. M., Li, F., Li, G., Li, H. B., Li, J. C., Li, K., Li, Lei, Li, Q. J., Li, S. L., Li, W. D., Li, W. G., Li, X. L., Li, X. N., Li, X. Q., Li, X. R., Li, Z. B., Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Liao, X. T., Liu, B. J., Liu, C. L., Liu, C. X., Liu, C. Y., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H., Liu, H. B., Liu, H. H., Liu, H. M., Liu, H. W., Liu, J. P., Liu, K. Y., Liu, Kai, Liu, P. L., Liu, Q., Liu, S. B., Liu, X., Liu, X. H., Liu, Y. B., Liu, Z. A., Liu, Zhiqiang, Liu, Zhiqing, Loehner, H., Lu, G. R., Lu, H. J., Lu, J. G., Lu, Q. W., Lu, X. R., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, T., Luo, X. L., Lv, M., Ma, C. L., Ma, F. C., Ma, H. L., Ma, Q. M., Ma, S., Ma, T., Ma, X. Y., Ma, Y., Maas, F. E., Maggiora, M., Malik, Q. A., Mao, Y. J., Mao, Z. P., Messchendorp, J. G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Morales, C. Morales, Motzko, C., Muchnoi, N. Yu., Muramatsu, H., Nefedov, Y., Nicholson, C., Nikolaev, I. B., Ning, Z., Olsen, S. L., Ouyang, Q., Pacetti, S., Park, J. W., Pelizaeus, M., Peng, H. P., Peters, K., Ping, J. L., Ping, R. G., Poling, R., Prencipe, E., Qi, M., Qian, S., Qiao, C. F., Qin, X. S., Qin, Y., Qin, Z. H., Qiu, J. F., Rashid, K. H., Rong, G., Ruan, X. D., Sarantsev, A., Schaefer, B. D., Schulze, J., Shao, M., Shen, C. P., Shen, X. Y., Sheng, H. Y., Shepherd, M. R., Song, W. M., Song, X. Y., Spataro, S., Spruck, B., Sun, D. H., 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., Toth, D., Ullrich, M., Varner, G. S., Wang, B., Wang, B. Q., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, P., Wang, P. L., Wang, Q., Wang, Q. J., Wang, S. G., Wang, X. L., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. Y., Wei, D. H., Weidenkaff, P., Wen, Q. G., Wen, S. P., Werner, M., Wiedner, U., Wu, L. H., Wu, N., Wu, S. X., Wu, W., Wu, Z., Xia, L. G., Xiao, Z. J., Xie, Y. G., Xiu, Q. L., Xu, G. F., Xu, G. M., Xu, H., Xu, Q. J., Xu, X. P., Xu, Z. R., Xue, F., Xue, Z., Yan, L., Yan, W. B., Yan, Y. H., Yang, H. X., Yang, Y., Yang, Y. X., Ye, H., Ye, M., Ye, M. H., Yu, B. X., Yu, C. X., Yu, J. S., Yu, S. P., Yuan, C. Z., Yuan, Y., Zafar, A. A., Zallo, A., Zeng, Y., Zhang, B. X., Zhang, B. Y., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, S. H., Zhang, X. J., Zhang, X. Y., Zhang, Y., Zhang, Y. H., Zhang, Y. S., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, H. S., Zhao, J. W., Zhao, K. X., Zhao, Lei, Zhao, Ling, Zhao, M. G., Zhao, Q., Zhao, S. J., Zhao, T. C., Zhao, X. H., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, Y. H., Zhong, B., Zhong, J., Zhou, L., Zhou, X. K., Zhou, X. R., Zhu, C., Zhu, K., Zhu, K. J., Zhu, S. H., Zhu, X. L., Zhu, X. W., Zhu, Y. C., Zhu, Y. M., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zou, B. S., and Zou, J. H. Observation of e⁺e⁻→ηJ/ψ at center-of-mass energy √s=4.009 GeV.  United States: N. p., 2012. 
Web.  doi:10.1103/PhysRevD.86.071101.

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                    Ablikim, M., Achasov, M. N., Ambrose, D. J., An, F. F., An, Q., An, Z. H., Bai, J. Z., Ban, Y., Becker, J., Bennett, J. V., Bertani, M., Bian, J. M., Boger, E., Bondarenko, O., Boyko, I., Briere, R. A., Bytev, V., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, S. J., Chen, Y. B., Cheng, H. P., Chu, Y. P., Cronin-Hennessy, D., Dai, H. L., Dai, J. P., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., Ding, W. M., Ding, Y., Dong, L. Y., Dong, M. Y., Du, S. X., Fang, J., Fang, S. S., Fava, L., Feldbauer, F., Feng, C. Q., Ferroli, R. B., Fu, C. D., Fu, J. L., Gao, Y., Geng, C., 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. P., Han, Y. L., Harris, F. A., He, K. L., He, M., He, Z. Y., Held, T., Heng, Y. K., Hou, Z. L., Hu, H. M., Hu, J. F., Hu, T., Huang, G. M., Huang, J. S., Huang, X. T., Huang, Y. P., Hussain, T., Ji, C. S., Ji, Q., Ji, X. B., Ji, X. L., Jiang, L. L., Jiang, X. S., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Jing, F. F., Kalantar-Nayestanaki, N., Kavatsyuk, M., Kuehn, W., Lai, W., Lange, J. S., Li, C. H., Li, Cheng, Li, Cui, Li, D. M., Li, F., Li, G., Li, H. B., Li, J. C., Li, K., Li, Lei, Li, Q. J., Li, S. L., Li, W. D., Li, W. G., Li, X. L., Li, X. N., Li, X. Q., Li, X. R., Li, Z. B., Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Liao, X. T., Liu, B. J., Liu, C. L., Liu, C. X., Liu, C. Y., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H., Liu, H. B., Liu, H. H., Liu, H. M., Liu, H. W., Liu, J. P., Liu, K. Y., Liu, Kai, Liu, P. L., Liu, Q., Liu, S. B., Liu, X., Liu, X. H., Liu, Y. B., Liu, Z. A., Liu, Zhiqiang, Liu, Zhiqing, Loehner, H., Lu, G. R., Lu, H. J., Lu, J. G., Lu, Q. W., Lu, X. R., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, T., Luo, X. L., Lv, M., Ma, C. L., Ma, F. C., Ma, H. L., Ma, Q. M., Ma, S., Ma, T., Ma, X. Y., Ma, Y., Maas, F. E., Maggiora, M., Malik, Q. A., Mao, Y. J., Mao, Z. P., Messchendorp, J. G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Morales, C. Morales, Motzko, C., Muchnoi, N. Yu., Muramatsu, H., Nefedov, Y., Nicholson, C., Nikolaev, I. B., Ning, Z., Olsen, S. L., Ouyang, Q., Pacetti, S., Park, J. W., Pelizaeus, M., Peng, H. P., Peters, K., Ping, J. L., Ping, R. G., Poling, R., Prencipe, E., Qi, M., Qian, S., Qiao, C. F., Qin, X. S., Qin, Y., Qin, Z. H., Qiu, J. F., Rashid, K. H., Rong, G., Ruan, X. D., Sarantsev, A., Schaefer, B. D., Schulze, J., Shao, M., Shen, C. P., Shen, X. Y., Sheng, H. Y., Shepherd, M. R., Song, W. M., Song, X. Y., Spataro, S., Spruck, B., Sun, D. H., 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., Toth, D., Ullrich, M., Varner, G. S., Wang, B., Wang, B. Q., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, P., Wang, P. L., Wang, Q., Wang, Q. J., Wang, S. G., Wang, X. L., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. Y., Wei, D. H., Weidenkaff, P., Wen, Q. G., Wen, S. P., Werner, M., Wiedner, U., Wu, L. H., Wu, N., Wu, S. X., Wu, W., Wu, Z., Xia, L. G., Xiao, Z. J., Xie, Y. G., Xiu, Q. L., Xu, G. F., Xu, G. M., Xu, H., Xu, Q. J., Xu, X. P., Xu, Z. R., Xue, F., Xue, Z., Yan, L., Yan, W. B., Yan, Y. H., Yang, H. X., Yang, Y., Yang, Y. X., Ye, H., Ye, M., Ye, M. H., Yu, B. X., Yu, C. X., Yu, J. S., Yu, S. P., Yuan, C. Z., Yuan, Y., Zafar, A. A., Zallo, A., Zeng, Y., Zhang, B. X., Zhang, B. Y., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, S. H., Zhang, X. J., Zhang, X. Y., Zhang, Y., Zhang, Y. H., Zhang, Y. S., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, H. S., Zhao, J. W., Zhao, K. X., Zhao, Lei, Zhao, Ling, Zhao, M. G., Zhao, Q., Zhao, S. J., Zhao, T. C., Zhao, X. H., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, Y. H., Zhong, B., Zhong, J., Zhou, L., Zhou, X. K., Zhou, X. R., Zhu, C., Zhu, K., Zhu, K. J., Zhu, S. H., Zhu, X. L., Zhu, X. W., Zhu, Y. C., Zhu, Y. M., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zou, B. S., & Zou, J. H. Observation of e⁺e⁻→ηJ/ψ at center-of-mass energy √s=4.009 GeV.  United States.  https://doi.org/10.1103/PhysRevD.86.071101

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                    Ablikim, M., Achasov, M. N., Ambrose, D. J., An, F. F., An, Q., An, Z. H., Bai, J. Z., Ban, Y., Becker, J., Bennett, J. V., Bertani, M., Bian, J. M., Boger, E., Bondarenko, O., Boyko, I., Briere, R. A., Bytev, V., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, S. J., Chen, Y. B., Cheng, H. P., Chu, Y. P., Cronin-Hennessy, D., Dai, H. L., Dai, J. P., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., Ding, W. M., Ding, Y., Dong, L. Y., Dong, M. Y., Du, S. X., Fang, J., Fang, S. S., Fava, L., Feldbauer, F., Feng, C. Q., Ferroli, R. B., Fu, C. D., Fu, J. L., Gao, Y., Geng, C., 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. P., Han, Y. L., Harris, F. A., He, K. L., He, M., He, Z. Y., Held, T., Heng, Y. K., Hou, Z. L., Hu, H. M., Hu, J. F., Hu, T., Huang, G. M., Huang, J. S., Huang, X. T., Huang, Y. P., Hussain, T., Ji, C. S., Ji, Q., Ji, X. B., Ji, X. L., Jiang, L. L., Jiang, X. S., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Jing, F. F., Kalantar-Nayestanaki, N., Kavatsyuk, M., Kuehn, W., Lai, W., Lange, J. S., Li, C. H., Li, Cheng, Li, Cui, Li, D. M., Li, F., Li, G., Li, H. B., Li, J. C., Li, K., Li, Lei, Li, Q. J., Li, S. L., Li, W. D., Li, W. G., Li, X. L., Li, X. N., Li, X. Q., Li, X. R., Li, Z. B., Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Liao, X. T., Liu, B. J., Liu, C. L., Liu, C. X., Liu, C. Y., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H., Liu, H. B., Liu, H. H., Liu, H. M., Liu, H. W., Liu, J. P., Liu, K. Y., Liu, Kai, Liu, P. L., Liu, Q., Liu, S. B., Liu, X., Liu, X. H., Liu, Y. B., Liu, Z. A., Liu, Zhiqiang, Liu, Zhiqing, Loehner, H., Lu, G. R., Lu, H. J., Lu, J. G., Lu, Q. W., Lu, X. R., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, T., Luo, X. L., Lv, M., Ma, C. L., Ma, F. C., Ma, H. L., Ma, Q. M., Ma, S., Ma, T., Ma, X. Y., Ma, Y., Maas, F. E., Maggiora, M., Malik, Q. A., Mao, Y. J., Mao, Z. P., Messchendorp, J. G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Morales, C. Morales, Motzko, C., Muchnoi, N. Yu., Muramatsu, H., Nefedov, Y., Nicholson, C., Nikolaev, I. B., Ning, Z., Olsen, S. L., Ouyang, Q., Pacetti, S., Park, J. W., Pelizaeus, M., Peng, H. P., Peters, K., Ping, J. L., Ping, R. G., Poling, R., Prencipe, E., Qi, M., Qian, S., Qiao, C. F., Qin, X. S., Qin, Y., Qin, Z. H., Qiu, J. F., Rashid, K. H., Rong, G., Ruan, X. D., Sarantsev, A., Schaefer, B. D., Schulze, J., Shao, M., Shen, C. P., Shen, X. Y., Sheng, H. Y., Shepherd, M. R., Song, W. M., Song, X. Y., Spataro, S., Spruck, B., Sun, D. H., 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., Toth, D., Ullrich, M., Varner, G. S., Wang, B., Wang, B. Q., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, P., Wang, P. L., Wang, Q., Wang, Q. J., Wang, S. G., Wang, X. L., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. Y., Wei, D. H., Weidenkaff, P., Wen, Q. G., Wen, S. P., Werner, M., Wiedner, U., Wu, L. H., Wu, N., Wu, S. X., Wu, W., Wu, Z., Xia, L. G., Xiao, Z. J., Xie, Y. G., Xiu, Q. L., Xu, G. F., Xu, G. M., Xu, H., Xu, Q. J., Xu, X. P., Xu, Z. R., Xue, F., Xue, Z., Yan, L., Yan, W. B., Yan, Y. H., Yang, H. X., Yang, Y., Yang, Y. X., Ye, H., Ye, M., Ye, M. H., Yu, B. X., Yu, C. X., Yu, J. S., Yu, S. P., Yuan, C. Z., Yuan, Y., Zafar, A. A., Zallo, A., Zeng, Y., Zhang, B. X., Zhang, B. Y., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, S. H., Zhang, X. J., Zhang, X. Y., Zhang, Y., Zhang, Y. H., Zhang, Y. S., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, H. S., Zhao, J. W., Zhao, K. X., Zhao, Lei, Zhao, Ling, Zhao, M. G., Zhao, Q., Zhao, S. J., Zhao, T. C., Zhao, X. H., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, Y. H., Zhong, B., Zhong, J., Zhou, L., Zhou, X. K., Zhou, X. R., Zhu, C., Zhu, K., Zhu, K. J., Zhu, S. H., Zhu, X. L., Zhu, X. W., Zhu, Y. C., Zhu, Y. M., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zou, B. S., and Zou, J. H. Mon .  
"Observation of e⁺e⁻→ηJ/ψ at center-of-mass energy √s=4.009 GeV".  United States.  https://doi.org/10.1103/PhysRevD.86.071101.

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@article{osti_1103423,

  title        = {Observation of e⁺e⁻→ηJ/ψ at center-of-mass energy √s=4.009 GeV},

  author       = {Ablikim, M. and Achasov, M. N. and Ambrose, D. J. and An, F. F. and An, Q. and An, Z. H. and Bai, J. Z. and Ban, Y. and Becker, J. and Bennett, J. V. and Bertani, M. and Bian, J. M. and Boger, E. and Bondarenko, O. and Boyko, I. and Briere, R. A. and Bytev, V. and Cai, X. and Cakir, O. and Calcaterra, A. and Cao, G. F. and Cetin, S. A. and Chang, J. F. and Chelkov, G. and Chen, G. and Chen, H. S. and Chen, J. C. and Chen, M. L. and Chen, S. J. and Chen, Y. B. and Cheng, H. P. and Chu, Y. P. and Cronin-Hennessy, D. and Dai, H. L. and Dai, J. P. and Dedovich, D. and Deng, Z. Y. and Denig, A. and Denysenko, I. and Destefanis, M. and Ding, W. M. and Ding, Y. and Dong, L. Y. and Dong, M. Y. and Du, S. X. and Fang, J. and Fang, S. S. and Fava, L. and Feldbauer, F. and Feng, C. Q. and Ferroli, R. B. and Fu, C. D. and Fu, J. L. and Gao, Y. and Geng, C. and Goetzen, K. and Gong, W. X. and Gradl, W. and Greco, M. and Gu, M. H. and Gu, Y. T. and Guan, Y. H. and Guo, A. Q. and Guo, L. B. and Guo, Y. P. and Han, Y. L. and Harris, F. A. and He, K. L. and He, M. and He, Z. Y. and Held, T. and Heng, Y. K. and Hou, Z. L. and Hu, H. M. and Hu, J. F. and Hu, T. and Huang, G. M. and Huang, J. S. and Huang, X. T. and Huang, Y. P. and Hussain, T. and Ji, C. S. and Ji, Q. and Ji, X. B. and Ji, X. L. and Jiang, L. L. and Jiang, X. S. and Jiao, J. B. and Jiao, Z. and Jin, D. P. and Jin, S. and Jing, F. F. and Kalantar-Nayestanaki, N. and Kavatsyuk, M. and Kuehn, W. and Lai, W. and Lange, J. S. and Li, C. H. and Li, Cheng and Li, Cui and Li, D. M. and Li, F. and Li, G. and Li, H. B. and Li, J. C. and Li, K. and Li, Lei and Li, Q. J. and Li, S. L. and Li, W. D. and Li, W. G. and Li, X. L. and Li, X. N. and Li, X. Q. and Li, X. R. and Li, Z. B. and Liang, H. and Liang, Y. F. and Liang, Y. T. and Liao, G. R. and Liao, X. T. and Liu, B. J. and Liu, C. L. and Liu, C. X. and Liu, C. Y. and Liu, F. H. and Liu, Fang and Liu, Feng and Liu, H. and Liu, H. B. and Liu, H. H. and Liu, H. M. and Liu, H. W. and Liu, J. P. and Liu, K. Y. and Liu, Kai and Liu, P. L. and Liu, Q. and Liu, S. B. and Liu, X. and Liu, X. H. and Liu, Y. B. and Liu, Z. A. and Liu, Zhiqiang and Liu, Zhiqing and Loehner, H. and Lu, G. R. and Lu, H. J. and Lu, J. G. and Lu, Q. W. and Lu, X. R. and Lu, Y. P. and Luo, C. L. and Luo, M. X. and Luo, T. and Luo, X. L. and Lv, M. and Ma, C. L. and Ma, F. C. and Ma, H. L. and Ma, Q. M. and Ma, S. and Ma, T. and Ma, X. Y. and Ma, Y. and Maas, F. E. and Maggiora, M. and Malik, Q. A. and Mao, Y. J. and Mao, Z. P. and Messchendorp, J. G. and Min, J. and Min, T. J. and Mitchell, R. E. and Mo, X. H. and Morales, C. Morales and Motzko, C. and Muchnoi, N. Yu. and Muramatsu, H. and Nefedov, Y. and Nicholson, C. and Nikolaev, I. B. and Ning, Z. and Olsen, S. L. and Ouyang, Q. and Pacetti, S. and Park, J. W. and Pelizaeus, M. and Peng, H. P. and Peters, K. and Ping, J. L. and Ping, R. G. and Poling, R. and Prencipe, E. and Qi, M. and Qian, S. and Qiao, C. F. and Qin, X. S. and Qin, Y. and Qin, Z. H. and Qiu, J. F. and Rashid, K. H. and Rong, G. and Ruan, X. D. and Sarantsev, A. and Schaefer, B. D. and Schulze, J. and Shao, M. and Shen, C. P. and Shen, X. Y. and Sheng, H. Y. and Shepherd, M. R. and Song, W. M. and Song, X. Y. and Spataro, S. and Spruck, B. and Sun, D. H. and Sun, G. X. and Sun, J. F. and Sun, S. S. and Sun, Y. J. and Sun, Y. Z. and Sun, Z. J. and Sun, Z. T. and Tang, C. J. and Tang, X. and Tapan, I. and Thorndike, E. H. and Toth, D. and Ullrich, M. and Varner, G. S. and Wang, B. and Wang, B. Q. and Wang, K. and Wang, L. L. and Wang, L. S. and Wang, M. and Wang, P. and Wang, P. L. and Wang, Q. and Wang, Q. J. and Wang, S. G. and Wang, X. L. and Wang, Y. D. and Wang, Y. F. and Wang, Y. Q. and Wang, Z. and Wang, Z. G. and Wang, Z. Y. and Wei, D. H. and Weidenkaff, P. and Wen, Q. G. and Wen, S. P. and Werner, M. and Wiedner, U. and Wu, L. H. and Wu, N. and Wu, S. X. and Wu, W. and Wu, Z. and Xia, L. G. and Xiao, Z. J. and Xie, Y. G. and Xiu, Q. L. and Xu, G. F. and Xu, G. M. and Xu, H. and Xu, Q. J. and Xu, X. P. and Xu, Z. R. and Xue, F. and Xue, Z. and Yan, L. and Yan, W. B. and Yan, Y. H. and Yang, H. X. and Yang, Y. and Yang, Y. X. and Ye, H. and Ye, M. and Ye, M. H. and Yu, B. X. and Yu, C. X. and Yu, J. S. and Yu, S. P. and Yuan, C. Z. and Yuan, Y. and Zafar, A. A. and Zallo, A. and Zeng, Y. and Zhang, B. X. and Zhang, B. Y. and Zhang, C. C. and Zhang, D. H. and Zhang, H. H. and Zhang, H. Y. and Zhang, J. Q. and Zhang, J. W. and Zhang, J. Y. and Zhang, J. Z. and Zhang, S. H. and Zhang, X. J. and Zhang, X. Y. and Zhang, Y. and Zhang, Y. H. and Zhang, Y. S. and Zhang, Z. P. and Zhang, Z. Y. and Zhao, G. and Zhao, H. S. and Zhao, J. W. and Zhao, K. X. and Zhao, Lei and Zhao, Ling and Zhao, M. G. and Zhao, Q. and Zhao, S. J. and Zhao, T. C. and Zhao, X. H. and Zhao, Y. B. and Zhao, Z. G. and Zhemchugov, A. and Zheng, B. and Zheng, J. P. and Zheng, Y. H. and Zhong, B. and Zhong, J. and Zhou, L. and Zhou, X. K. and Zhou, X. R. and Zhu, C. and Zhu, K. and Zhu, K. J. and Zhu, S. H. and Zhu, X. L. and Zhu, X. W. and Zhu, Y. C. and Zhu, Y. M. and Zhu, Y. S. and Zhu, Z. A. and Zhuang, J. and Zou, B. S. and Zou, J. H.},

  abstractNote = {Using a 478 pb⁻¹ data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider storage ring at a center-of-mass energy of s√=4.009 GeV, the production of e⁺e⁻→ηJ/ψ is observed for the first time with a statistical significance of greater than 10σ. The Born cross section is measured to be (32.1±2.8±1.3) pb, where the first error is statistical and the second systematic. Assuming the ηJ/ψ signal is from a hadronic transition of the ψ(4040), the fractional transition rate is determined to be B(ψ(4040)→ηJ/ψ)=(5.2±0.5±0.2±0.5)×10⁻³, where the first, second, and third errors are statistical, systematic, and the uncertainty from the ψ(4040) resonant parameters, respectively. The production of e⁺e⁻→π0J/ψ is searched for, but no significant signal is observed, and B(ψ(4040)→π⁰J/ψ)<2.8×10⁻⁴ is obtained at the 90% confidence level.},

  doi          = {10.1103/PhysRevD.86.071101},

  journal      = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},

  number       = 7,

  volume       = 86,

  place        = {United States},

  year         = {Mon Oct 01 00:00:00 EDT 2012},

  month        = {Mon Oct 01 00:00:00 EDT 2012}

}

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Physical Review D, Vol. 78, Issue 11
DOI: 10.1103/PhysRevD.78.112002

Charmonium Decays of $Y (4260)$ , $ψ (4160)$ , and $ψ (4040)$
journal, April 2006

Coan, T. E.; Gao, Y. S.; Liu, F.
Physical Review Letters, Vol. 96, Issue 16
DOI: 10.1103/PhysRevLett.96.162003

Observation of a Broad Structure in the $π^{+} π^{-} J / ψ$ Mass Spectrum around $4.26 GeV / c^{2}$
journal, September 2005

Aubert, B.; Barate, R.; Boutigny, D.
Physical Review Letters, Vol. 95, Issue 14
DOI: 10.1103/PhysRevLett.95.142001

Observation of Two Resonant Structures in $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ via Initial-State Radiation at Belle
journal, October 2007

Wang, X. L.; Yuan, C. Z.; Shen, C. P.
Physical Review Letters, Vol. 99, Issue 14
DOI: 10.1103/PhysRevLett.99.142002

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Title: Observation of e⁺e⁻→ηJ/ψ at center-of-mass energy √s=4.009 GeV

Abstract

Citation Formats

Heavy quarkonium: progress, puzzles, and opportunities journal, February 2011

Charmonium: Comparison with experiment journal, January 1980

Event generators at BESIII journal, August 2008

Review of Particle Physics journal, July 2012

Performance of the plugged-in 22 Na based slow positron beam facility journal, March 2008

Observation of a Resonance at 4.4 GeV and Additional Structure near 4.1 GeV in e + e − Annihilation journal, March 1976

Higher charmonia journal, September 2005

Hadronic Transitions from ϒ(4s) as a Probe of Four-Quark Admixture journal, April 2011

Observation of ψ ( 3770 ) → π π J / ψ and Measurement of Γ e e [ ψ ( 2 S ) ] journal, March 2006

The precision Monte Carlo event generator for two-fermion final states in collisions journal, August 2000

Charmonium: The model journal, June 1978

Coherent exclusive exponentiation for precision Monte Carlo calculations journal, May 2001

Design and construction of the BESIII detector journal, March 2010

Measurement of the e + e − → π + π − J / ψ Cross Section Via Initial-State Radiation at Belle journal, November 2007

Study of hadronic transitions between Υ states and observation of Υ ( 4 S ) → η Υ ( 1 S ) decay journal, December 2008

Charmonium Decays of Y ( 4260 ) , ψ ( 4160 ) , and ψ ( 4040 ) journal, April 2006

Observation of a Broad Structure in the π + π − J / ψ Mass Spectrum around 4.26 GeV / c 2 journal, September 2005

Observation of Two Resonant Structures in e + e − → π + π − ψ ( 2 S ) via Initial-State Radiation at Belle journal, October 2007

Heavy quarkonium: progress, puzzles, and opportunities
journal, February 2011

Charmonium: Comparison with experiment
journal, January 1980

Event generators at BESIII
journal, August 2008

Review of Particle Physics
journal, July 2012

Performance of the plugged-in ²² Na based slow positron beam facility
journal, March 2008

Observation of a Resonance at 4.4 GeV and Additional Structure near 4.1 GeV in $e^{+} e^{-}$ Annihilation
journal, March 1976

Higher charmonia
journal, September 2005

Hadronic Transitions from ϒ(4s) as a Probe of Four-Quark Admixture
journal, April 2011

Observation of $ψ (3770) \to π π J / ψ$ and Measurement of $Γ_{e e} [ψ (2 S)]$
journal, March 2006

The precision Monte Carlo event generator for two-fermion final states in collisions
journal, August 2000

Charmonium: The model
journal, June 1978

Coherent exclusive exponentiation for precision Monte Carlo calculations
journal, May 2001

Design and construction of the BESIII detector
journal, March 2010

Measurement of the $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ Cross Section Via Initial-State Radiation at Belle
journal, November 2007

Study of hadronic transitions between $Υ$ states and observation of $Υ (4 S) \to η Υ (1 S)$ decay
journal, December 2008

Charmonium Decays of $Y (4260)$ , $ψ (4160)$ , and $ψ (4040)$
journal, April 2006

Observation of a Broad Structure in the $π^{+} π^{-} J / ψ$ Mass Spectrum around $4.26 GeV / c^{2}$
journal, September 2005

Observation of Two Resonant Structures in $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ via Initial-State Radiation at Belle
journal, October 2007