Measurement of the $\mathrm e^+\mathrm e^-\rightarrow\mathrm\pi^+\mathrm\pi^-$ Cross Section between 600 and 900 MeV Using Initial State Radiation
High Energy Physics - Experiment
2021-01-12 v3
Abstract
We extract the cross section in the energy range between 600 and 900 MeV, exploiting the method of initial state radiation. A data set with an integrated luminosity of 2.93 fb taken at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider is used. The cross section is measured with a systematic uncertainty of 0.9%. We extract the pion form factor as well as the contribution of the measured cross section to the leading order hadronic vacuum polarization contribution to . We find this value to be .
Keywords
Cite
@article{arxiv.1507.08188,
title = {Measurement of the $\mathrm e^+\mathrm e^-\rightarrow\mathrm\pi^+\mathrm\pi^-$ Cross Section between 600 and 900 MeV Using Initial State Radiation},
author = {M. Ablikim and M. N. Achasov and X. C. Ai and O. Albayrak and M. Albrecht and D. J. Ambrose and A. Amoroso and F. F. An and Q. An and J. Z. Bai and R. Baldini Ferroli and Y. Ban and D. W. Bennett and J. V. Bennett and M. Bertani and D. Bettoni and J. M. Bian and F. Bianchi and E. Boger and I. Boyko and R. A. Briere and H. Cai and X. Cai and O. Cakir and A. Calcaterra and G. F. Cao and S. A. Cetin and J. F. Chang and G. Chelkov and G. Chen and H. S. Chen and H. Y. Chen and J. C. Chen and M. L. Chen and S. J. Chen and X. Chen and X. R. Chen and Y. B. Chen and H. P. Cheng and X. K. Chu and G. Cibinetto and H. L. Dai and J. P. Dai and A. Dbeyssi and D. Dedovich and Z. Y. Deng and A. Denig and I. Denysenko and M. Destefanis and F. De Mori and Y. Ding and C. Dong and J. Dong and L. Y. Dong and M. Y. Dong and S. X. Du and P. F. Duan and E. E. Eren and J. Z. Fan and J. Fang and S. S. Fang and X. Fang and Y. Fang and L. Fava and F. Feldbauer and G. Felici and C. Q. Feng and E. Fioravanti and M. Fritsch and C. D. Fu and Q. Gao and X. Y. Gao and Y. Gao and Z. Gao and I. Garzia and K. Goetzen and W. X. Gong and W. Gradl and M. Greco and M. H. Gu and Y. T. Gu and Y. H. Guan and A. Q. Guo and L. B. Guo and Y. Guo and Y. P. Guo and Z. Haddadi and A. Hafner and S. Han and X. Q. Hao and F. A. Harris and K. L. He and X. Q. He and T. Held and Y. K. Heng and Z. L. Hou and C. Hu and H. M. Hu and J. F. Hu and T. Hu and Y. Hu and G. M. Huang and G. S. Huang and J. S. Huang and X. T. Huang and Y. Huang and T. Hussain and Q. Ji and Q. P. Ji and X. B. Ji and X. L. Ji and L. W. Jiang and X. S. Jiang and X. Y. Jiang and J. B. Jiao and Z. Jiao and D. P. Jin and S. Jin and T. Johansson and A. Julin and N. Kalantar-Nayestanaki and X. L. Kang and X. S. Kang and M. Kavatsyuk and B. C. Ke and P. Kiese and R. Kliemt and B. Kloss and O. B. Kolcu and B. Kopf and M. Kornicer and W. Kühn and A. Kupsc and J. S. Lange and M. Lara and P. Larin and C. Leng and C. Li and Cheng Li and D. M. Li and F. Li and F. Y. Li and G. Li and H. B. Li and J. C. Li and Jin Li and K. Li and K. Li and Lei Li and P. R. Li and T. Li and W. D. Li and W. G. Li and X. L. Li and X. M. Li and X. N. Li and X. Q. Li and Z. B. Li and H. Liang and Y. F. Liang and Y. T. Liang and G. R. Liao and D. X. Lin and B. J. Liu and C. X. Liu and F. H. Liu and Fang Liu and Feng Liu and H. B. Liu and H. H. Liu and H. H. Liu and H. M. Liu and J. Liu and J. B. Liu and J. P. Liu and J. Y. Liu and K. Liu and K. Y. Liu and L. D. Liu and P. L. Liu and Q. Liu and S. B. Liu and X. Liu and Y. B. Liu and Z. A. Liu and Zhiqing Liu and H. Loehner and X. C. Lou and H. J. Lu and J. G. Lu and Y. Lu and Y. P. Lu and C. L. Luo and M. X. Luo and T. Luo and X. L. Luo and X. R. Lyu and F. C. Ma and H. L. Ma and L. L. Ma and Q. M. Ma and T. Ma and X. N. Ma and X. Y. Ma and F. E. Maas and M. Maggiora and Y. J. Mao and Z. P. Mao and S. Marcello and J. G. Messchendorp and J. Min and R. E. Mitchell and X. H. Mo and Y. J. Mo and C. Morales Morales and K. Moriya and N. Yu. Muchnoi and H. Muramatsu and Y. Nefedov and F. Nerling and I. B. Nikolaev and Z. Ning and S. Nisar and S. L. Niu and X. Y. Niu and S. L. Olsen and Q. Ouyang and S. Pacetti and P. Patteri and M. Pelizaeus and H. P. Peng and K. Peters and J. Pettersson and J. L. Ping and R. G. Ping and R. Poling and V. Prasad and M. Qi and S. Qian and C. F. Qiao and L. Q. Qin and N. Qin and X. S. Qin and Z. H. Qin and J. F. Qiu and K. H. Rashid and C. F. Redmer and M. Ripka and G. Rong and Ch. Rosner and X. D. Ruan and V. Santoro and A. Sarantsev and M. Savrié and K. Schoenning and S. Schumann and W. Shan and M. Shao and C. P. Shen and P. X. Shen and X. Y. Shen and H. Y. Sheng and W. M. Song and M. R. Shepherd and X. Y. Song and S. Sosio and S. Spataro and G. X. Sun and J. F. Sun and S. S. Sun and Y. J. Sun and Y. Z. Sun and Z. J. Sun and Z. T. Sun and C. J. Tang and X. Tang and I. Tapan and E. H. Thorndike and M. Tiemens and M. Ullrich and I. Uman and G. S. Varner and B. Wang and D. Wang and D. Y. Wang and K. Wang and L. L. Wang and L. S. Wang and M. Wang and P. Wang and P. L. Wang and S. G. Wang and W. Wang and X. F. Wang and Y. D. Wang and Y. F. Wang and Y. Q. Wang and Z. Wang and Z. G. Wang and Z. H. Wang and Z. Y. Wang and T. Weber and D. H. Wei and J. B. Wei and P. Weidenkaff and S. P. Wen and U. Wiedner and M. Wolke and L. H. Wu and Z. Wu and L. G. Xia and Y. Xia and D. Xiao and H. Xiao and Z. J. Xiao and Y. G. Xie and Q. L. Xiu and G. F. Xu and L. Xu and Q. J. Xu and X. P. Xu and L. Yan and W. B. Yan and W. C. Yan and Y. H. Yan and H. J. Yang and H. X. Yang and L. Yang and Y. Yang and Y. X. Yang and M. Ye and M. H. Ye and J. H. Yin and B. X. Yu and C. X. Yu and J. S. Yu and C. Z. Yuan and W. L. Yuan and Y. Yuan and A. Yuncu and A. A. Zafar and A. Zallo and Y. Zeng and B. X. Zhang and B. Y. Zhang and C. Zhang and C. C. Zhang and D. H. Zhang and H. H. Zhang and H. Y. Zhang and J. J. Zhang and J. L. Zhang and J. Q. Zhang and J. W. Zhang and J. Y. Zhang and J. Z. Zhang and K. Zhang and L. Zhang and X. Y. Zhang and Y. Zhang and Y. N. Zhang and Y. H. Zhang and Y. T. Zhang and Yu Zhang and Z. H. Zhang and Z. P. Zhang and Z. Y. Zhang and G. Zhao and J. W. Zhao and J. Y. Zhao and J. Z. Zhao and Lei Zhao and Ling Zhao and M. G. Zhao and Q. Zhao and Q. W. Zhao and S. J. Zhao and T. C. Zhao and Y. B. Zhao and Z. G. Zhao and A. Zhemchugov and B. Zheng and J. P. Zheng and W. J. Zheng and Y. H. Zheng and B. Zhong and L. Zhou and X. Zhou and X. K. Zhou and X. R. Zhou and X. Y. Zhou and K. Zhu and K. J. Zhu and S. Zhu and S. H. Zhu and X. L. Zhu and Y. C. Zhu and Y. S. Zhu and Z. A. Zhu and J. Zhuang and L. Zotti and B. S. Zou and J. H. Zou},
journal= {arXiv preprint arXiv:1507.08188},
year = {2021}
}
Comments
14 pages, 7 figures, accepted by PLB