3.55 keV line in minimal decaying dark matter scenarios

Journal Article · Mon Jul 20 00:00:00 EDT 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/07/023· OSTI ID:22454573

Arcadi, Giorgio ^[1]; Covi, Laura; Dradi, Federico ^[2]

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1. Laboratoire de Physique Théorique, Université Paris-Sud,F-91405 Orsay (France)
2. Institute for Theoretical Physics, Georg-August University Göttingen,Friedrich-Hund-Platz 1, Göttingen, D-37077 (Germany)

We investigate the possibility of reproducing the recently reported 3.55 keV line in some simple decaying dark matter scenarios. In all cases a keV scale decaying DM is coupled with a scalar field charged under SM gauge interactions and thus capable of pair production at the LHC. We will investigate how the demand of a DM lifetime compatible with the observed signal, combined with the requirement of the correct DM relic density through the freeze-in mechanism, impacts the prospects of observation at the LHC of the decays of the scalar field.

• Sponsoring Organization: SCOAP3, CERN, Geneva (Switzerland)
• OSTI ID: 22454573
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 07; Other Information: PUBLISHER-ID: JCAP07(2015)023; OAI: oai:repo.scoap3.org:11139; Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
43 PARTICLE ACCELERATORS
CERN LHC
DECAY
KEV RANGE
LIFETIME
NONLUMINOUS MATTER
PAIR PRODUCTION
RELICT RADIATION
SCALAR FIELDS
TELESCOPES
X RADIATION