TY - JOUR
T1 - Scalar σ meson effects in ρ and ω decays into π0π0γ
AU - Bramon, A.
AU - Escribano, R.
AU - Lucio M, J. L.
AU - Napsuciale, M.
PY - 2001/10/4
Y1 - 2001/10/4
N2 - The complementarity between chiral perturbation theory and the linear sigma model in the scalar channel is exploited to study π0π0 production in ρ and σ radiative decays, where the effects of a low mass scalar resonance σ (500) should manifest. The recently reported data on p → π0π0γ seem to require the contribution of a low mass and moderately narrow σ (500). The properties of this controversial state could be fixed by improving the accuracy of these measurements. Data on σ→ σ0σ0γ can also be accommodated in our framework, but are much less sensitive to the σ(500) properties. © 2001 Published by Elsevier Science B.V.
AB - The complementarity between chiral perturbation theory and the linear sigma model in the scalar channel is exploited to study π0π0 production in ρ and σ radiative decays, where the effects of a low mass scalar resonance σ (500) should manifest. The recently reported data on p → π0π0γ seem to require the contribution of a low mass and moderately narrow σ (500). The properties of this controversial state could be fixed by improving the accuracy of these measurements. Data on σ→ σ0σ0γ can also be accommodated in our framework, but are much less sensitive to the σ(500) properties. © 2001 Published by Elsevier Science B.V.
U2 - https://doi.org/10.1016/S0370-2693(01)01007-3
DO - https://doi.org/10.1016/S0370-2693(01)01007-3
M3 - Article
SN - 0370-2693
VL - 517
SP - 345
EP - 354
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -