Robust constraints on feebly interacting particles using XMM-Newton

During galactic supernova (SN) explosions, a large amount of feebly interacting particles (FIPs) may be produced. In this work we analyze electrophilic FIPs with masses in the MeV-range that escape from SN and decay into electron-positron pairs, causing an exotic leptonic injection. This contributio...

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Bibliographic Details
Published in:Physical review. D 2024, Vol.109 (10), Article L101305
Main Authors: Luque, Pedro De la Torre, Balaji, Shyam, Carenza, Pierluca
Format: Article
Language:English
Subjects:
Astrophysics
High Energy Physics - Phenomenology
Physics
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Summary:During galactic supernova (SN) explosions, a large amount of feebly interacting particles (FIPs) may be produced. In this work we analyze electrophilic FIPs with masses in the MeV-range that escape from SN and decay into electron-positron pairs, causing an exotic leptonic injection. This contribution adds up to known components, leading to an unexpected excess of x-ray fluxes generated by inverse-Compton scattering of the injected particles on low-energy photon backgrounds. For the first time in the context of FIPs, we use XMM-Newton x-ray measurements to obtain the strongest and most robust bounds on electrophilic FIPs produced by SN in our Galaxy.
ISSN:2470-0010
2470-0029
2470-0029
DOI:10.1103/PhysRevD.109.L101305