Matches in SemOpenAlex for { <https://semopenalex.org/work/W4288691285> ?p ?o ?g. }
- W4288691285 abstract "We show that models in which the strong $CP$ problem is solved by introducing an axion field with a mass enhanced by non-QCD UV dynamics at a scale $Lambda_{rm SI}$ exhibit enhanced sensitivity to external sources of $CP$ violation. In the presence of higher-dimensional $CP$-odd sources at a scale $Lambda_{rm CP}$, the same mechanisms that enhance the axion mass also modify the axion potential, shifting the potential minimum by a factor $proptoLambda^2_{rm SI}/Lambda^2_{rm CP}$. This phenomenon of $CP$-violation enhancement, which puts stringent constraints on the scale of new physics, is explicitly demonstrated within a broad class of small instanton models with $CP$-odd sources arising from the dimension-six Weinberg gluonic and four-fermion operators. We find that for heavy axion masses $gtrsim 100$MeV, arising from new dynamics at $Lambda_{rm SI}lesssim 10^{10}$GeV, $CP$ violation generated up to the Planck scale can be probed by future electric dipole moment experiments." @default.
- W4288691285 created "2022-07-30" @default.
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- W4288691285 date "2022-07-29" @default.
- W4288691285 modified "2023-10-03" @default.
- W4288691285 title "Enhanced EDMs from small instantons" @default.
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- W4288691285 doi "https://doi.org/10.1103/physrevd.106.015030" @default.
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