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Higgsphobic and fermiophobic Z' as a single dark matter candidate

Abstract : A spin-1 Z' particle as a single dark matter candidate is investigated by assuming that it does not directly couple to the Higgs boson and standard model fermions and does not mix with the photon and Z boson. The remaining dominant vertices are quartic Z'Z'ZZ and Z'Z'W+W-, which can induce effective Z'Z'q\bar{q} couplings through standard-model gauge-boson loops. We discuss constraints from the cosmological thermal relic density, and direct and indirect-detection experiments, and find that a dark Z' can only exist above the W boson mass threshold, and the effective quartic coupling of Z'Z'VV is bounded in the region of 10^{-3}~10^{-2}.
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Contributor : Sylvie Flores <>
Submitted on : Thursday, March 13, 2014 - 9:53:51 AM
Last modification on : Thursday, May 28, 2020 - 11:58:05 PM

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Nan Chen, Ying Zhang, Qing Wang, Giacomo Cacciapaglia, Aldo Deandrea, et al.. Higgsphobic and fermiophobic Z' as a single dark matter candidate. Journal of High Energy Physics, Springer, 2014, 05, pp.088. ⟨10.1007/JHEP05(2014)088⟩. ⟨in2p3-00958645⟩



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