Accès ouvert déclaré
2025
preprint
Measurement of separate electron and positron spectra from 10 GeV to 20GeV with the geomagnetic field on DAMPE
DAMPE Collaboration, Francesco Alemanno, Qingming An, P. Azzarello, F. C. T. Barbato, P. Bernardini, X. J. Bi, H. Boutin, I. Cagnoli, M. S. Cai, E. Casilli, E. Catanzani, J. F. Chang, D. Y. Chen, J.L. Chen, Z. F. Chen, Z. X. Chen, Paul Coppin, Maxwell Cui, T. S. Cui, Yuxin Cui, A. E. DiGiovanni, Ting Dong, Z. X. Dong, Giacinto Donvito, David Droz, J. L. Duan, K. K. Duan, Ruirui Fan, Y. Z. Fan, Fei Fang, K. Fang, C. Q. Feng, Lei Feng, J. M. Frieden, P. Fusco, Mei Gao, F. Gargano, E. Ghose, Ke Gong, Y. Z. Gong, D. Y. Guo, J. H. Guo, S. X. Han, Yi-Ming Hu, G. S. Huang, Xiaoyuan Huang, Y. Huang, M. Ionica, Lu-Yao Jiang, Yue Jiang, Wei Jiang, Jie Kong, Andrii Kotenko, Dimitrios Kyratzis, S. J. Lei, M. B. Li, W. H. Li, W. L. Li, Xiang Li, Y. M. Liang, C. M. Liu, Hao Liu, Jie Liu, Shubin Liu, Ye Liu, F. Loparco, C. N. Luo, M. Ma, Peng-Xiong Ma, T. Ma, X. Y. Ma, G. Marsella, M. N. Mazziotta, Defeng Mo, Yuefeng Nie, X. Y. Niu, A. Parenti, Wen-Xi Peng, Peng Xu, C. Perrina, Enzo Putti-Garcia, Rui Qiao, J. N. Rao, Ritabrata Sarkar, Pierpaolo Savina, Andrea Serpolla, Z. Shangguan, W. H. Shen, Zhongtao Shen, Leandro Silveri, J. X. Song, Mikhail Stolpovskiy, H. Su, Meng Su, Haoliang Sun, Zhenyu Sun, A. Surdo, Xueyi Teng, A. Tykhonov, G. F. Wang, Junfeng Wang, L. G. Wang, Shen Wang, X. L. Wang, Y. F. Wang, Yunlong Wang, D. M. Wei, J. J. Wei, Y. F. Wei, Di Wu, Jin Wu, Sha Sha Wu, Xin Wu, Zi-Qing Xia, Ziyu Xiong, E. H. Xu, He Xu, Jingjing Xu, Zhenghong Xu, Zhe Xu, Zhi-Hui Xu, G. F. Xue, H. B. Yang, Peng Yang, Yunyi Yang, H. J. Yao, Mu-Lin Yan, Yang Yu, Qiangqiang Yuan, Chuan Yue, Jing-Jing Zang, Shengxia Zhang, W. Z. Zhang, Yao Zhang, Y. J. Zhang, Y. L. Zhang, Y. P. Zhang, Y. Q. Zhang, Zhiyong Zhang, Z. Y. Zhang, C. Zhao, Hong Zhao, Xiaofan Zhao, C. Y. Zhou, Yan Zhu
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Le résumé fourni par la source
The cosmic-ray (CR) electrons and positrons in space are of great significance for studying the origin and propagation of cosmic-rays. The satellite-borne experiment DArk Matter Particle Explorer (DAMPE) has been used to measure the separate electron and positron spectra, as well as the positron fraction. In this work, the Earth's magnetic field is used to distinguish CR electrons and positrons, as the DAMPE detector does not carry an onboard magnet. The energy range for the measurements is from 10 to 20 GeV, being currently limited at high energy by the zenith pointing orientation of DAMPE. The results are consistent with previous measurements based on the magnetic spectrometer by AMS-02 and PAMELA, while the results of Fermi-LAT seem then to be systematically shifted to larger values.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Les sujets associés
Dark Matter and Cosmic PhenomenaAstrophysics and Cosmic PhenomenaRadiation Therapy and Dosimetry