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  5. Hadronic cross section measurements with the DAMPE space mission using 20 GeV-10 TeV cosmic-ray protons and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>He</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>

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Article
en
2025

Hadronic cross section measurements with the DAMPE space mission using 20 GeV-10 TeV cosmic-ray protons and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>He</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>

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en
2025
Vol 111 (1)
Vol. 111
DOI: 10.1103/physrevd.111.012002

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Xiaoyuan Huang
Xiaoyuan Huang

Institution not specified

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F. Alemanno
Q. An
P. Azzarello
+97 more

Abstract

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 Bi4Ge3O12 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. Published by the American Physical Society 2025

How to cite this publication

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, Ming-Yang 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, Y. Z. 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, Xin-Qiao 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, A. 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 (2025). Hadronic cross section measurements with the DAMPE space mission using 20 GeV-10 TeV cosmic-ray protons and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>He</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>. , 111(1), DOI: https://doi.org/10.1103/physrevd.111.012002.

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Publication Details

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Article

Year

2025

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100

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0

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Language

en

DOI

https://doi.org/10.1103/physrevd.111.012002

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