Hadronic cross section measurements with the DAMPE space mission using 20 GeV-10 TeV cosmic-ray protons and He 4

作者：F. Alemanno, Q. An, P. Azzarello, Felicia Barbato, P. Bernardini, Xiao-Jun Bi, I. Cagnoli, Mingsheng Cai, E. Casilli, E. Catanzani, Jin Chang, D. Y. Chen, Ji‐Long Chen, Z. F. Chen, Paul Coppin, Maxwell Cui, T. S. Cui, Yuxin Cui, Haoting Dai, A. De Benedittis, I. De Mitri, Francesco Palma, A. Di Giovanni, Qiurong Ding, T. K. Dong, Z. X. Dong, Giacinto Donvito, David Droz, Jinglai Duan, K. K. Duan, R. R. Fan, Yi-Zhong Fan, F. Fang, Ke Fang, C. Q. Feng, Lei Feng, Jennifer Maria Frieden, P. Fusco, M. Gao, F. Gargano, Ke Gong, Yuanlin Gong, D. Y. Guo, Jian‐Hua Guo, Shuo Han, Yi-Ming Hu, G. S. Huang, Xiaoyuan Huang, Y. Y. Huang, M. Ionica, Libo Jiang, Yi Jiang, Wei Jiang, Jie Kong, Andrii Kotenko, Dimitrios Kyratzis, S. J. Lei, W. H. Li, W. L. Li, Xiangnan Li, Xinqiao Li, Y. M. Liang, C. M. Liu, H. Liu, Jia Liu, S. B. Liu, X. Liu, F. Loparco, C. N. Luo, M. Ma, Peng-Xiong Ma, T. Ma, X. Y., G. Marsella, M. N. Mazziotta, D. Mo, X. Y. Niu, X. Pan, A. Parenti, W. X. Peng, Xinyong Peng, C. Perrina, Enzo Putti-Garcia, Rui Qiao, J. N. Rao, Arshia Ruina, R. Sarkar, P. Savina, Andrea Serpolla, Z. Shangguan, W. H. Shen, Zhao-Qiang Shen, Zhongtao Shen, Leandro Silveri, J. X. Song, M. Stolpovskiy, Hong Su, Meng Su, Haoliang Sun, Z. Sun, A. Surdo, Xueyi Teng, A. Tykhonov, J. Z. Wang, L. G. Wang, S Wang, S. X. Wang, X. L. Wang, Yilin Wang, Y. F. Wang, Yuan-Zhu Wang, Zhe Wang, Da-Ming Wei, Jun-Jie Wei, Yifeng Wei, Di Wu, Ji Wu, S. Wu, X. Wu, Zi-Qing Xia, He Xu, Jingyi Xu, Z. H. Xu, Z. L. Xu, E. H. Xu, Z. Xu, Guofeng Xue, H. B. Yang, Peng Yang, Yifan Yang, Huijun Yao, Y. H. Yu, Guan-Wen Yuan, Q. Yuan, C. Yue, Jing-Jing Zang, Shengxia Zhang, W. Z. Zhang, Yan Zhang, Yi Zhang, Yan Zhang, Y. L. Zhang, Y. P. Zhang, Y. Q. Zhang, Z. Zhang, Z. Y. Zhang, Chengxin Zhao, Haiyan Zhao, Xiaofan Zhao, C. Y. Zhou, Y. S. Zhu · 发表于：Physical review. D/Physical review. D. · 年份：2025 · DOI：10.1103/physrevd.111.012002 · 被引用次数：3 · 研究领域：Dark Matter and Cosmic Phenomena、Radiation Therapy and Dosimetry、Astrophysics and Cosmic Phenomena

Precise direct cosmic-ray (CR) measurements provide an important probe to study the energetic particle sources in our Galaxy, and the interstellar environment through which these particles propagate. Uncertainties on hadronic models, ion-nucleon cross sections in particular, are currently the limiting factor toward obtaining more accurate CR ion flux measurements with calorimetric space-based experiments. We present an energy-dependent measurement of the inelastic cross section of protons and helium-4 nuclei (alpha particles) on a Bi 4 Ge 3 O 12 target, using 88 months of data collected by the DAMPE space mission. The kinetic energy range per nucleon of the measurement points ranges from 18 GeV to 9 TeV for protons, and from 5 GeV / n to 3 TeV / n for helium-4 nuclei. Our results lead to a significant improvement of the CR flux normalization. In the case of helium-4, these results correspond to the first cross section measurements on a heavy target material at energies above 10 GeV / n .