Robust constraints on feebly interacting particles using XMM-Newton

Pedro De la Torre Luque (The Oskar Klein Centre, Department of Physics, Stockholm University, Stockholm 106 91, Sweden) ; Shyam Balaji (Institut d’Astrophysique de Paris, UMR 7095 CNRS and Sorbonne Université, 98 bis boulevard Arago, F-75014 Paris, France; Laboratoire de Physique Théorique et Hautes Energies (LPTHE), UMR 7589 CNRS and Sorbonne Université, 4 Place Jussieu, F-75252, Paris, France) ; Pierluca Carenza (The Oskar Klein Centre, Department of Physics, Stockholm University, Stockholm 106 91, Sweden)

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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      "value": "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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Published on:
17 May 2024
Publisher:
APS
Published in:
Physical Review D , Volume 109 (2024)
Issue 10
DOI:
https://doi.org/10.1103/PhysRevD.109.L101305
arXiv:
2307.13728
Copyrights:
Published by the American Physical Society
Licence:
CC-BY-4.0

Fulltext files: