Study of dalitz-plot distributions of the decays η→π+π-π0 and η→π+π-γ

J. G. Layter, J. A. Appel, A. Kotlewski, W. Lee, S. Stein, J. J. Thaler

Research output: Contribution to journalArticle

Abstract

Based on 80 884 events, we obtained the matrix element squared for the decay η→π+π-π0:|M (x,y)|2=1-(1.08±0.014)y+(0.03±0.03)y2+(0.05±0.03)x2 where x and y are the usual Dalitz-plot coordinates. The γ-ray energy spectrum was measured for 18 150 η→π+π-γ events. ρ dominance of the π+π- final state is strongly favored over a simple gauge-invariant matrix element.

Original languageEnglish (US)
Pages (from-to)2565-2568
Number of pages4
JournalPhysical Review D
Volume7
Issue number9
DOIs
StatePublished - Jan 1 1973

ASJC Scopus subject areas

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

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    Layter, J. G., Appel, J. A., Kotlewski, A., Lee, W., Stein, S., & Thaler, J. J. (1973). Study of dalitz-plot distributions of the decays η→π+π-π0 and η→π+π-γ. Physical Review D, 7(9), 2565-2568. https://doi.org/10.1103/PhysRevD.7.2565