Open AccessPion spectrum in decay of '(3.7) to (3.1)
Author(s) -
Julian Schwinger,
Kimball A. Milton,
WenTien Tsai,
Lester L. DeRaad
Publication year - 1975
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.72.11.4216
Subject(s) - physics , pion , particle physics , spectrum (functional analysis) , hadron , coupling (piping) , nuclear physics , quantum mechanics , mechanical engineering , engineering
The decay of Ψ′ → Ψ + ππ is described by a chiral ε model. The general features of the observed dipion spectrum are well reproduced. Comparison with the hadronic decay ρ′ → ρ + ππ indicates that the Ψ′Ψε coupling is relatively suppressed by a factor ∼10-2 .