TY - JOUR
T1 - Chiral perturbation theory predictions for η → π+π-π0γ
AU - Bramon, A.
AU - Gosdzinsky, P.
AU - Tortosa, S.
PY - 1996/6/6
Y1 - 1996/6/6
N2 - The η → π+π-0γ decay is discussed in the general context of Chiral Perturbation Theory (ChPT), assuming that the low-energy constants (counterterms) are saturated by vector-meson resonances. The η → π+π-Tr0γ amplitude can be separated in two distinct pieces: the inner bremsstrahlung, A(IB), and the structure dependent (or direct emission), A(SD), amplitudes. The former - which essentially contains the same physics as A(η → π+π-π0) - is found to dominate over the second one - which looks more interesting from the ChPT point of view.
AB - The η → π+π-0γ decay is discussed in the general context of Chiral Perturbation Theory (ChPT), assuming that the low-energy constants (counterterms) are saturated by vector-meson resonances. The η → π+π-Tr0γ amplitude can be separated in two distinct pieces: the inner bremsstrahlung, A(IB), and the structure dependent (or direct emission), A(SD), amplitudes. The former - which essentially contains the same physics as A(η → π+π-π0) - is found to dominate over the second one - which looks more interesting from the ChPT point of view.
UR - https://www.scopus.com/pages/publications/0041593653
U2 - 10.1016/0370-2693(96)00315-2
DO - 10.1016/0370-2693(96)00315-2
M3 - Article
SN - 0370-2693
VL - 377
SP - 140
EP - 146
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-3
ER -