Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 8, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP08(2018)061
Keywords
Beyond Standard Model; Cosmology of Theories beyond the SM; Gauge Symmetry
Categories
Funding
- STFC Consolidated Grant [ST/L000296/1]
- European Union [674896, 690575]
- STFC [ST/P000711/1] Funding Source: UKRI
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We discuss a flavourful Z' portal model with a coupling to fourth-family singlet Dirac neutrino dark matter. In the absence of mixing, the Z' is fermiophobic, having no couplings to the three chiral families, but does couple to a fourth vector-like family. Due to mixing effects, the Z' gets induced couplings to second family left-handed lepton doublets and third family left-handed quark doublets. This model can simultaneously account for the measured B-decay ratios R-K and R-K* and for the observed relic abundance of dark matter. We identify the parameter space where this explanation is consistent with existing experimental constraints from dark matter direct and indirect detection, LHC searches, and precision measurements of flavour mixing and neutrino processes.
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