Freeze-In dark matter with displaced signatures at colliders
- Berkeley Center for Theoretical Physics, Department of Physics,and Theoretical Physics Group, Lawrence Berkeley National Laboratory,University of California,Berkeley, CA 94720 (United States)
Dark matter, X, may be generated by new physics at the TeV scale during an early matter-dominated (MD) era that ends at temperature T{sub R}≪ TeV. Compared to the conventional radiation-dominated (RD) results, yields from both Freeze-Out and Freeze-In processes are greatly suppressed by dilution from entropy production, making Freeze-Out less plausible while allowing successful Freeze-In with a much larger coupling strength. Freeze-In is typically dominated by the decay of a particle B of the thermal bath, B→X. For a large fraction of the relevant cosmological parameter space, the decay rate required to produce the observed dark matter abundance leads to displaced signals at LHC and future colliders, for any m{sub X} in the range keV
- Sponsoring Organization:
- SCOAP3, CERN, Geneva (Switzerland)
- OSTI ID:
- 22458412
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 12; Other Information: PUBLISHER-ID: JCAP12(2015)024; OAI: oai:repo.scoap3.org:13014; 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
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