CP -violating decays of the pseudoscalars η and η′ and their connection to the electric dipole moment of the neutron

Thomas Gutsche, Astrid N. Hiller Blin, Sergey Kovalenko, Serguei Kuleshov, Valery E. Lyubovitskij, Manuel J. Vicente Vacas, Alexey Zhevlakov

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

© 2017 American Physical Society. Using the present upper bound on the neutron electric dipole moment, we give an estimate for the upper limit of the CP-violating couplings of the η(η′) to the nucleon. Using this result, we then derive constraints on the CP-violating η(η′)ππ couplings, which define the two-pion CP-violating decays of the η and η′ mesons. Our results are relevant for the running and planned measurements of rare decays of the η and η′ mesons by the GlueX Collaboration at JLab and the LHCb Collaboration at CERN.
Original languageEnglish
JournalPhysical Review D
DOIs
Publication statusPublished - 28 Feb 2017
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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