Spontaneous CP violation from high-dimensional operators

Darwin Chang; Chuan Hung Chen; Chao Qiang Geng

doi:10.1143/PTP.101.403

Spontaneous CP violation from high-dimensional operators

Darwin Chang, Chuan Hung Chen, Chao Qiang Geng

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate spontaneous CP violation that arises from high-dimensional operators in an effective Lagrangian with the symmetry group SU(3) × SU(2) × U(1) × Z₇. We show that such a model does not necessarily require a very large scale Λ by simultaneously satisfying the constraints from the ∈ parameter in the neutral kaon system and the electric dipole moment (EDM) of the neutron. We find that the EDM of the electron in this model could be at the level of 10^-27 ecm. However, the CP violating muon polarizations in η, K_L → μ⁺ μ^- decays are small.

Original language	English
Pages (from-to)	403-414
Number of pages	12
Journal	Progress of Theoretical Physics
Volume	101
Issue number	2
DOIs	https://doi.org/10.1143/PTP.101.403
Publication status	Published - 1999 Feb

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1143/PTP.101.403

Cite this

@article{6665f2abe3374989bfa72ca7a031a955,

title = "Spontaneous CP violation from high-dimensional operators",

abstract = "We investigate spontaneous CP violation that arises from high-dimensional operators in an effective Lagrangian with the symmetry group SU(3) × SU(2) × U(1) × Z7. We show that such a model does not necessarily require a very large scale Λ by simultaneously satisfying the constraints from the ∈ parameter in the neutral kaon system and the electric dipole moment (EDM) of the neutron. We find that the EDM of the electron in this model could be at the level of 10-27 ecm. However, the CP violating muon polarizations in η, KL → μ+ μ- decays are small.",

author = "Darwin Chang and Chen, {Chuan Hung} and Geng, {Chao Qiang}",

year = "1999",

month = feb,

doi = "10.1143/PTP.101.403",

language = "English",

volume = "101",

pages = "403--414",

journal = "Progress of Theoretical Physics",

issn = "0033-068X",

publisher = "Yukawa Institute for Theoretical Physics",

number = "2",

}

TY - JOUR

T1 - Spontaneous CP violation from high-dimensional operators

AU - Chang, Darwin

AU - Chen, Chuan Hung

AU - Geng, Chao Qiang

PY - 1999/2

Y1 - 1999/2

N2 - We investigate spontaneous CP violation that arises from high-dimensional operators in an effective Lagrangian with the symmetry group SU(3) × SU(2) × U(1) × Z7. We show that such a model does not necessarily require a very large scale Λ by simultaneously satisfying the constraints from the ∈ parameter in the neutral kaon system and the electric dipole moment (EDM) of the neutron. We find that the EDM of the electron in this model could be at the level of 10-27 ecm. However, the CP violating muon polarizations in η, KL → μ+ μ- decays are small.

AB - We investigate spontaneous CP violation that arises from high-dimensional operators in an effective Lagrangian with the symmetry group SU(3) × SU(2) × U(1) × Z7. We show that such a model does not necessarily require a very large scale Λ by simultaneously satisfying the constraints from the ∈ parameter in the neutral kaon system and the electric dipole moment (EDM) of the neutron. We find that the EDM of the electron in this model could be at the level of 10-27 ecm. However, the CP violating muon polarizations in η, KL → μ+ μ- decays are small.

UR - http://www.scopus.com/inward/record.url?scp=0033070898&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033070898&partnerID=8YFLogxK

U2 - 10.1143/PTP.101.403

DO - 10.1143/PTP.101.403

M3 - Article

AN - SCOPUS:0033070898

SN - 0033-068X

VL - 101

SP - 403

EP - 414

JO - Progress of Theoretical Physics

JF - Progress of Theoretical Physics

IS - 2

ER -

Spontaneous CP violation from high-dimensional operators

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this