New LUX result constrains exotic quark mediators with the vector dark matter. (English) Zbl 1356.81228
Summary: The scenario of the compressed mass spectrum between heavy quark and dark matter is a challenge for LHC searches. However, the elastic scattering cross-section between dark matter and nuclei in dark matter direct detection experiments can be enhanced with nearly degenerate masses between heavy quarks and dark matter. In this paper, we illustrate such scenario with a vector dark matter, using the latest result from LUX 2016. The mass constraints on heavy quarks can be more stringent than current limits from LHC, unless the coupling strength is very small. However, the compress mass spectrum with allowed tiny coupling strength makes the decay lifetime of heavy quarks longer than the timescale of QCD hadronization.
MSC:
| 81V25 | Other elementary particle theory in quantum theory |
| 81V05 | Strong interaction, including quantum chromodynamics |
| 81T18 | Feynman diagrams |
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