Electric dipole moments as probes of CPT invariance

Pavel A. Bolokhov, Maxim Pospelov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Electric dipole moments (EDMs) of elementary particles and atoms probe violations of T and P symmetries and consequently of CP if CPT is an exact symmetry. We point out that EDMs can also serve as sensitive probes of CPT-odd but CP-even interactions. In a class of theories where the breaking of CPT is introduced via the breaking of Lorentz invariance, we identify the leading dimension five operators that induce non-zero EDMs. We find that the EDMs of neutrons, and heavy diamagnetic atoms provide best sensitivity to the T, P, CPT-odd interactions, allowing to probe energy scales as high as 1012 GeV. We also point out that additional tests of Lorentz invariance are required in order to distinguish between CP-odd and CPT-odd effects, should non-zero EDMs be found.

Original languageEnglish (US)
Title of host publicationPARTICLES AND NUCLEI
Subtitle of host publicationSeventeenth Internatinal Conference on Particles and Nuclei
Pages781-783
Number of pages3
DOIs
StatePublished - 2006
Externally publishedYes
EventPARTICLES AND NUCLEI: Seventeenth Internatinal Conference on Particles and Nuclei - Santa Fe, NM, United States
Duration: Oct 23 2005Oct 30 2005

Publication series

NameAIP Conference Proceedings
Volume842
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherPARTICLES AND NUCLEI: Seventeenth Internatinal Conference on Particles and Nuclei
CountryUnited States
CitySanta Fe, NM
Period10/23/0510/30/05

Keywords

  • CPT Symmetry
  • Electric dipole moment

Fingerprint Dive into the research topics of 'Electric dipole moments as probes of CPT invariance'. Together they form a unique fingerprint.

Cite this