D’Angelo, F. and Oliva, A. and Masi, N. (2024) Production of antiprotons in cosmic rays with new cross-sections. Il nuovo cimento C, 47 (5). pp. 1-4. ISSN 1826-9885
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Abstract
Galactic cosmic ray antiproton flux is used to study possible traces of dark matter annihilation. In this work, the background of antiprotons produced by galactic cosmic rays interacting with the interstellar medium has been re-evaluated on the basis of an improved model of antiproton production cross-section and using state-of-art galactic and heliospheric cosmic ray transport codes. We found that the antiproton flux measured by AMS-02 is underestimated by the model of about 3% in the range between 4 and 40GeV with a significance higher than 6σ, considering only the cross-section uncertainties. However, the full evaluation of the significance of the observed discrepancy depends on other modelization uncertainties, to be estimated in further work.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 10 Jan 2025 11:54 |
| Last Modified: | 10 Jan 2025 11:54 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23313 |
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