Combined search in dwarf spheroidal galaxies for branon dark matter annihilation signatures with the MAGIC telescopes
The MAGIC collaboration (2025-03-12)
IOP Science
12.03.2025
Abe, S., Abhir, J., Abhishek, A., Acciari, V. A., Aguasca-Cabot, A., Agudo, I., Aniello, T., Ansoldi, S., Arbet Engels, A., Arcaro, C., Asano, K., Baack, D., Babić, A., Barres De Almeida, U., Barrio, J. A., Batković, I., Bautista, A., Baxter, J., Becerra González, J., … The MAGIC collaboration. (2025). Combined search in dwarf spheroidal galaxies for branon dark matter annihilation signatures with the MAGIC telescopes. Journal of Cosmology and Astroparticle Physics, 2025(03), 020. https://doi.org/10.1088/1475-7516/2025/03/020.
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© 2025 The Author(s). Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
https://creativecommons.org/licenses/by/4.0/
© 2025 The Author(s). Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202504252918
https://urn.fi/URN:NBN:fi:oulu-202504252918
Tiivistelmä
Abstract
Massive brane fluctuations, called branons, behave as weakly interacting massive particles, which is one of the most favored class of candidates to fulfill the role of the dark matter (DM), an elusive kind of matter beyond the Standard Model. We present a multi-target search in dwarf spheroidal galaxies for branon DM annihilation signatures with a total exposure of 354 hours with the ground-based gamma-ray telescope system MAGIC. This search led to the most constraining limits on branon DM in the sub-TeV and multi-TeV DM mass range. Our most stringent limit on the thermally-averaged annihilation cross-section (at 95% confidence level) corresponds to ⟨σv⟩ ≃ 1.9 × 10-24 cm3s-1 at a branon mass of ∼ 1.5 TeV.
Massive brane fluctuations, called branons, behave as weakly interacting massive particles, which is one of the most favored class of candidates to fulfill the role of the dark matter (DM), an elusive kind of matter beyond the Standard Model. We present a multi-target search in dwarf spheroidal galaxies for branon DM annihilation signatures with a total exposure of 354 hours with the ground-based gamma-ray telescope system MAGIC. This search led to the most constraining limits on branon DM in the sub-TeV and multi-TeV DM mass range. Our most stringent limit on the thermally-averaged annihilation cross-section (at 95% confidence level) corresponds to ⟨σv⟩ ≃ 1.9 × 10-24 cm3s-1 at a branon mass of ∼ 1.5 TeV.
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- Avoin saatavuus [37920]
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