Tootfinder

Scrutinizing the impact of the solar modulation on AMS-02 antiproton excess
Kai-Kai Duan, Xiao Wang, Wen-Hao Li, Zhi-Hui Xu, Yue-Lin Sming Tsai, Yi-Zhong Fan
https://arxiv.org/abs/2506.13352

Scrutinizing the impact of the solar modulation on AMS-02 antiproton excess
This study examines the impact of solar modulation on the antiproton excess observed by AMS-02, which may indicate dark matter (DM) annihilation. We analyze three solar modulation models: the force-field approximation (FFA), a time-, charge-, and rigidity-dependent FFA, and a three-dimensional numerical simulation based on the Parker transport equation. Based on AMS-02 latest antiproton data (2025), our results show that the significance of the DM signal is sensitive to the chosen modulation mo…