Freeze-in axion-like dark matter
Physics Letters B, ISSN: 0370-2693, Vol: 799, Page: 135044
2019
- 11Citations
- 4Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
We present an interesting Higgs portal model where an axion-like particle (ALP) couples to the Standard Model sector only via the Higgs field. The ALP becomes stable due to CP invariance and turns out to be a natural candidate for freeze-in dark matter because its properties are controlled by the perturbative ALP shift symmetry. The portal coupling can be generated non-perturbatively by a hidden confining gauge sector, or radiatively by new leptons charged under the ALP shift symmetry. Such UV completions generally involve a CP violating phase, which makes the ALP unstable and decay through mixing with the Higgs boson, but can be sufficiently suppressed in a natural way by invoking additional symmetries.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S037026931930766X; http://dx.doi.org/10.1016/j.physletb.2019.135044; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85074384427&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S037026931930766X; https://dx.doi.org/10.1016/j.physletb.2019.135044
Elsevier BV
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