AMS-02 in Space: Physics Results

7th International Symposium on Large TPCs for Low-Energy Rare Event Detection

Tomassetti, Nicola^1

LPSC, Université Grenoble - Alpes, CNRS, IN2P3, Grenoble, France^1

关键词: Alpha magnetic spectrometers;    Astrophysical sources;    Dark matter particles;    Fundamental physics research;    Galactic cosmic rays;    High sensitivity;    Light nuclei;    Long exposures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/650/1/012001/pdf
DOI  :  10.1088/1742-6596/650/1/012001

来源: IOP

【 摘 要 】

The Alpha Magnetic Spectrometer (AMS-02) is a particle physics experiment designed to study origin and nature of Galactic Cosmic Rays (CRs) up to TeV energies from space. With its high sensitivity, long exposure and excellent identification capabilities, AMS is conducting a unique mission of fundamental physics research in space. To date, more than 60 billion CR events have been collected by AMS. The new results on CR leptons and the analysis and light-nuclei are presented and discussed. The new leptonic data indicate the existence of new sources of high-energy CR leptons, that may arise either by dark-matter particles annihilation or by nearby astrophysical sources of e±pairs. Future data at higher energies and forthcoming measurements on the antiproton spectrum and the boron-to-carbon ratio will be crucial in providing the discrimination among the different scenario.