A global QCD fit to deep-inelastic scattering prefers a dark photon with mass 4 to 6 GeV and mixing 0.06 to 0.12, claimed as a 6.5 sigma hint, though direct searches exclude these parameters unless extra dark matter couplings are invoked.
Constraints on the dark photon from deep inelastic scattering
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We investigate constraints on the dark photon arising from an analysis of deep inelastic scattering (DIS) data. We perform extractions of parton distribution functions (PDFs) with and without a dark photon being present and allow the dark photon mixing parameter and mass to vary. We also include the effects of vector meson dominance to ensure the correct photo-production limit. By considering the variation of the total $\chi^2$ arising from such extractions we infer exclusion limits on the kinetic mixing parameter of the dark photon for dark photon mass up to $80\ {\rm GeV}$.
citation-role summary
extension 1
citation-polarity summary
fields
hep-ph 1years
2025 1verdicts
CONDITIONAL 1roles
extension 1polarities
extend 1representative citing papers
citing papers explorer
-
Evidence for and implications of a dark photon
A global QCD fit to deep-inelastic scattering prefers a dark photon with mass 4 to 6 GeV and mixing 0.06 to 0.12, claimed as a 6.5 sigma hint, though direct searches exclude these parameters unless extra dark matter couplings are invoked.