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arXiv · 2307.13728

Robust constraints on feebly interacting particles using XMM-Newton

Pedro De la Torre Luque·Shyam Balaji·Pierluca Carenza
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Abstract

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.

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Pedro De la Torre Luque, Shyam Balaji, Pierluca Carenza. 2023-07-25. Robust constraints on feebly interacting particles using XMM-Newton. https://doi.org/10.1103/physrevd.109.l101305

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