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CP-violating dark photon kinetic mixing and type-III seesaw model

Cheng, Yu and He, Xiao-Gang and Ramsey-Musolf, Michael J. and Sun, Jin (2022) CP-violating dark photon kinetic mixing and type-III seesaw model. Physical Review D, 105 (9). Art.. No. 095010. ISSN 2470-0010. doi:10.1103/physrevd.105.095010.

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The hypothetical dark photon portal connecting the visible and dark sectors of the Universe has received considerable attention in recent years, with a focus on CP-conserving kinetic mixing between the Standard Model hypercharge gauge boson and a new U(1)ₓ gauge boson. In the effective field theory context, one may write nonrenormalizable CP-violating kinetic mixing interactions involving the X and SU(2)_L gauge bosons. We construct for the first time a renormalizable model for CP-violating kinetic mixing that induces CP-violating non-Abelian kinetic mixing at mass dimension 5. The model grows out of the type-III seesaw model, with the lepton triplets containing right-handed neutrinos playing a crucial role in making the model renormalizable and providing a bridge to the origin of the neutrino mass. This scenario also accommodates electron electric dipole moments (EDM) as large as the current experimental bound, making future EDM searches an important probe of this scenario.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
He, Xiao-Gang0000-0001-7059-6311
Ramsey-Musolf, Michael J.0000-0001-8110-2479
Sun, Jin0000-0002-8763-5804
Alternate Title:CP violating dark photon kinetic mixing and type-III seesaw model
Additional Information:© 2022 The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. (Received 2 May 2021; revised 16 December 2021; accepted 1 April 2022; published 12 May 2022) This work was supported in part by the Key Laboratory for Particle Physics, Astrophysics and Cosmology, the Ministry of Education, and the Shanghai Key Laboratory for Particle Physics and Cosmology (Grant No. 15DZ2272100), and in part by the NSFC (Grants No. 11735010, No. 11975149, No. 12090064, and No. 19Z103010239). X.-G. H. was supported in part by the MOST (Grant No. MOST 106-2112-M-002-003-MY3). M. J. R.-M. was also supported in part by U.S. Department of Energy Contract No. DE-SC0011095.
Funding AgencyGrant Number
Shanghai Key Laboratory for Particle Physics and Cosmology15DZ2272100
National Natural Science Foundation of China11735010
National Natural Science Foundation of China11975149
National Natural Science Foundation of China12090064
National Natural Science Foundation of China19Z103010239
Ministry of Science and Technology (China)106-2112-M-002-003-MY3
Department of Energy (DOE)DE-SC0011095
Issue or Number:9
Record Number:CaltechAUTHORS:20220601-257636000
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:114981
Deposited By: George Porter
Deposited On:02 Jun 2022 19:37
Last Modified:02 Jun 2022 19:37

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