A Global View of the EDM Landscape
arxiv(2024)
摘要
Permanent electric dipole moments (EDMs) are sensitive probes of the symmetry
structure of elementary particles, which in turn is closely tied to the baryon
asymmetry in the universe. A meaningful interpretation framework for EDM
measurements has to be based on effective quantum field theory. We interpret
the measurements performed to date in terms of a hadronic-scale Lagrangian,
using the SFitter global analysis framework. We find that part of this
Lagrangian is constrained very well, while some of the parameters suffer from
too few high-precision measurements. Theory uncertainties lead to weaker model
constraints, but can be controlled within the global analysis.
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