PoS - Proceedings of Science
Volume 395 - 37th International Cosmic Ray Conference (ICRC2021) - DM - Dark Matter
Cherenkov Telescope Array sensitivity to branon dark matter models
A. Aguirre-Santaella*, M.A. Sánchez-Conde, V. Gammaldi and D. Nieto
Full text: pdf
Pre-published on: July 06, 2021
Published on: March 18, 2022
TeV DM candidates are gradually earning more and more attention within the community. Among others, extra-dimensional brane-world models may produce thermal DM candidates with masses up to 100 TeV, which could be detected with the next generation of very-high-energy gamma-ray observatories such as the Cherenkov Telescope Array (CTA).
In this work, we study the sensitivity of CTA to branon DM via the observation of dwarf spheroidal galaxies.
We computed annihilation cross section values needed to reach a 5$\sigma$ detection as a function of the branon mass. Additionally, in the absence of a predicted DM signal, we obtained 2$\sigma$ upper limits on the annihilation cross section. These limits lie $1.5-2$ orders of magnitude above the thermal relic cross section value.
Yet, CTA will allow to exclude a significant portion of the brane tension-mass parameter space in the $0.1-60$ TeV branon mass range, and up to tensions of $\sim10$ TeV. More importantly, CTA will significantly enlarge the region already excluded by AMS and CMS, and will provide valuable complementary information to future SKA radio observations.
[Based on JCAP 10 (2020) 041, arXiv:2006.16706]
DOI: https://doi.org/10.22323/1.395.0507
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.