TY - JOUR
T1 - Electric dipole moments from dark sectors
AU - Okawa, Shohei
AU - Pospelov, Maxim
AU - Ritz, Adam
N1 - Publisher Copyright:
© 2019 authors. Published by the American Physical Society.
PY - 2019/10/15
Y1 - 2019/10/15
N2 - We examine the sensitivity of electric dipole moments (EDMs) to new CP-violating physics in a hidden (or dark) sector, neutral under the Standard Model (SM) gauge groups, and coupled via renormalizable portals. In the absence of weak sector interactions, we show that the electron EDM can be induced purely through the gauge kinetic mixing portal, but requires five loops, and four powers of the kinetic mixing parameter ϵ. Allowing weak interactions, and incorporating the Higgs and neutrino portals, we show that the leading contributions to de arise at two-loop order, with the main source of CP-violating being in the interaction of dark Higgs and heavy singlet neutrinos. In such models, EDMs can provide new sensitivity to portal couplings that is complementary to direct probes at the intensity frontier or high energy colliders.
AB - We examine the sensitivity of electric dipole moments (EDMs) to new CP-violating physics in a hidden (or dark) sector, neutral under the Standard Model (SM) gauge groups, and coupled via renormalizable portals. In the absence of weak sector interactions, we show that the electron EDM can be induced purely through the gauge kinetic mixing portal, but requires five loops, and four powers of the kinetic mixing parameter ϵ. Allowing weak interactions, and incorporating the Higgs and neutrino portals, we show that the leading contributions to de arise at two-loop order, with the main source of CP-violating being in the interaction of dark Higgs and heavy singlet neutrinos. In such models, EDMs can provide new sensitivity to portal couplings that is complementary to direct probes at the intensity frontier or high energy colliders.
UR - http://www.scopus.com/inward/record.url?scp=85074349257&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85074349257&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.100.075017
DO - 10.1103/PhysRevD.100.075017
M3 - Article
AN - SCOPUS:85074349257
SN - 2470-0010
VL - 100
JO - Physical Review D
JF - Physical Review D
IS - 7
M1 - 075017
ER -