The time-reversal- and parity-violating nuclear potential in chiral effective theory

C. M. Maekawa, E. Mereghetti, J. de Vries, Ubirajara Van Kolck

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We derive the parity- and time-reversal-violating nuclear interactions stemming from the QCD θ̄ term and quark/gluon operators of effective dimension 6: quark electric dipole moments, quark and gluon chromo-electric dipole moments, and two four-quark operators. We work in the framework of two-flavor chiral perturbation theory, where a systematic expansion is possible. The different chiral-transformation properties of the sources of time-reversal violation lead to different hadronic interactions. For all sources considered the leading-order potential involves known one-pion exchange, but its specific form and the relative importance of short-range interactions depend on the source. For the θ̄ term, the leading potential is solely given by one-pion exchange, which does not contribute to the deuteron electric dipole moment. In subleading order, a new two-pion-exchange potential is obtained. Its short-range component is indistinguishable from one of two undetermined contact interactions that appear at the same order and represent effects of heavier mesons and other short-range QCD dynamics. One-pion-exchange corrections at this order are discussed as well.

Original languageEnglish (US)
Pages (from-to)117-160
Number of pages44
JournalNuclear Physics, Section A
Volume872
Issue number1
DOIs
StatePublished - Dec 2011

Fingerprint

nuclear potential
parity
pions
electric moments
quarks
electric dipoles
dipole moments
quantum chromodynamics
operators
nuclear interactions
interactions
deuterons
electric contacts
mesons
perturbation theory
expansion

Keywords

  • Chiral effective theory
  • Time-reversal violation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

The time-reversal- and parity-violating nuclear potential in chiral effective theory. / Maekawa, C. M.; Mereghetti, E.; de Vries, J.; Van Kolck, Ubirajara.

In: Nuclear Physics, Section A, Vol. 872, No. 1, 12.2011, p. 117-160.

Research output: Contribution to journalArticle

Maekawa, C. M. ; Mereghetti, E. ; de Vries, J. ; Van Kolck, Ubirajara. / The time-reversal- and parity-violating nuclear potential in chiral effective theory. In: Nuclear Physics, Section A. 2011 ; Vol. 872, No. 1. pp. 117-160.
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