TY  - JOUR
AU  - Dobado González, Antonio
AU  - Peláez Sagredo, José Ramón
PY  - 1993
DO  - 10.1007/BF01474345
SN  - 0170-9739
UR  - https://hdl.handle.net/20.500.14352/58751
T2  - Zeitschrift Fur Physik C-Particles and Fields
AB  - The direct chiral perturbation theory (ChPT) one-loop prediction for the production of two pions from two photons is compared with the recent Crystal Ball experimental data. The one-loop computation does not fit data even close to threshold because...
M2  - 501
PB  - Springer Verlag
KW  - Physics
KW  - Particles and Fields
TI  - Unitarity and gamma-gamma-]pi-pi in chiral perturbation-theory
TY  - journal article
VL  - 57
ER  -