期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP05(2014)088
关键词
Beyond Standard Model; Cosmology of Theories beyond the SM
资金
- National Science Foundation of China (NSFC) [11075085]
- National Basic Research Program of China (973 Program) [2010CB833000]
- Specialized Research Fund for the Doctoral Program of High Education of China [20110002110010]
- France China Particle Physics Laboratory (FCPPL)
- Tsinghua University Initiative Scientific Research Program
- Labex-LIO (Lyon Institute of Origins) [ANR-10-LABX-66]
- Institut Universitaire de France
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 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) similar to 10(-2).
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