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Mixed WIMP-axion dark matter / Chatterjee, Suman (Tata Inst.) ; Das, Anirban (Tata Inst.) ; Samui, Tousik (Harish-Chandra Res. Inst.) ; Sen, Manibrata (Northwestern U. ; UC, Berkeley)
We study the experimental constraints on a model of a two-component dark matter, consisting of the QCD axion, and a scalar particle, both contributing to the dark matter relic abundance of the universe. The global Peccei-Quinn symmetry of the theory can be spontaneously broken down to a residual $\mathbb{Z}_2$-symmetry, thereby identifying this scalar as a stable weakly interacting massive particle, i.e., a dark matter candidate, in addition to the axion. [...]
arXiv:1810.09471; TIFR/TH/18-31; NUHEP-TH/18-11; HRI-RECAPP-2018-013.- 2020-01-01 - 16 p. - Published in : Phys. Rev. D 100 (2019) 115050 Article from SCOAP3: PDF; Fulltext: PDF;

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