THESEUS insights into axionlike particles, dark photon, and sterile neutrino dark matter
Thorpe-Morgan C, Malyshev D, Santangelo A, Jochum J, Jaeger B, Sasaki M, Saeedi S (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 102
Journal Issue: 12
DOI: 10.1103/PhysRevD.102.123003
Abstract
Through a series of simulated observations, we investigate the capability of the instruments aboard the forthcoming THESEUS mission for the detection of a characteristic signal from decaying dark matter (DM) in the keV-McV energy range. We focus our studies on three well studied Standard Model extensions hosting axionlike particles, dark photon, and sterile neutrino DM candidates. We show that, due to the sensitivity of THESEUS' x and gamma imaging spectrometer instrument, existing constraints on dark matter parameters can be improved by a factor of up to similar to 300, depending on the considered DM model and assuming a zero level of systematic uncertainty. We also show that even a minimal level of systematic uncertainty of 1% can impair potential constraints by one to two orders of magnitude. We argue that nonetheless, the constraints imposed by THESEUS will be substantially better than existing ones and will well complement the constraints of upcoming missions such as eXTP and Athena. Ultimately, the limits imposed by THESEUS and future missions will ensure a robust and thorough coverage of the parameter space for decaying DM models, enabling either a detection of dark matter or a significant improvement of relevant limits.
Authors with CRIS profile
Manami Sasaki
Professur für Multiwellenlängenastronomie
Sara Saeedi
Professur für Multiwellenlängenastronomie
Involved external institutions
Germany (DE)How to cite
APA:
Thorpe-Morgan, C., Malyshev, D., Santangelo, A., Jochum, J., Jaeger, B., Sasaki, M., & Saeedi, S. (2020). THESEUS insights into axionlike particles, dark photon, and sterile neutrino dark matter. Physical Review D, 102(12). https://dx.doi.org/10.1103/PhysRevD.102.123003
MLA:
Thorpe-Morgan, Charles, et al. "THESEUS insights into axionlike particles, dark photon, and sterile neutrino dark matter." Physical Review D 102.12 (2020).
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