Patterns of CP violation from mirror symmetry breaking in the η →π+π-π0 Dalitz plot

Susan Gardner, Jun Shi

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


A violation of mirror symmetry in the η→π+π-π0 Dalitz plot has long been recognized as a signal of C and CP violation. Here we show how the isospin of the underlying C- and CP-violating structures can be reconstructed from their kinematic representation in the Dalitz plot. Our analysis of the most recent experimental data reveals, for the first time, that the C- and CP-violating amplitude with total isospin I=2 is much more severely suppressed than that with total isospin I=0.

Original languageEnglish
Article number115038
JournalPhysical Review D
Issue number11
StatePublished - Jun 1 2020

Bibliographical note

Funding Information:
We thank Jian Liang for his assistance in the numerical analysis, Johan Bijnens for helpful correspondence regarding Ref. , Andrzej Kupsc for a discussion of the KLOE-2 experimental results , and Bastian Kubis for comments that we found helpful to clarifying our presentation. We acknowledge the DOE Office of Nuclear Physics under Contract No. DE-FG02-96ER40989 for partial support.

Publisher Copyright:
© 2020 authors.

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Patterns of CP violation from mirror symmetry breaking in the η →π+π-π0 Dalitz plot'. Together they form a unique fingerprint.

Cite this