Standard model gauging of the Wess-Zumino-Witten term: Anomalies, global currents, and pseudo-Chern-Simons interactions

Jeffrey A. Harvey, Christopher T. Hill, Richard J. Hill

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

The standard model SU(2)L×U(1)Y gauging of the Wess-Zumino-Witten term requires a modified counterterm when background fields, needed to generate the full set of currents, are introduced. The modified counterterm plays an essential role in properly defining covariant global currents and their anomalies. For example, it is required in order to correctly derive the gauge-invariant baryon number current and its anomalous divergence. The background fields can also be promoted to a description of the physical spin-1 vector and axial-vector mesons in QCD and the counterterm leads to novel interactions. These are (pseudo)Chern-Simons terms, such as μνρσ ωμZν∂ρAσ and μνρσρμ± Wν∂ρAσ that mediate new interactions between neutrinos and photons at finite baryon density.

Original languageEnglish
Article number085017
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume77
Issue number8
DOIs
StatePublished - Apr 17 2008

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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