TY - JOUR
T1 - γγ → πππ to one loop in chiral perturbation theory
AU - Talavera, P.
AU - Ametller, Ll
AU - Bijnens, J.
AU - Bramon, A.
AU - Cornet, F.
PY - 1996/5/23
Y1 - 1996/5/23
N2 - The γγ → π0π0π0and γγ → π+π-π0 amplitudes are discussed in the general context of Chiral Perturbation Theory (ChPT) to O(p6). Chiral loops are found to play a major role. This makes these processes a good test of ChPT, mainly in its anomalous sector. We correct earlier numerical results at tree level and determine the one-loop results as well.
AB - The γγ → π0π0π0and γγ → π+π-π0 amplitudes are discussed in the general context of Chiral Perturbation Theory (ChPT) to O(p6). Chiral loops are found to play a major role. This makes these processes a good test of ChPT, mainly in its anomalous sector. We correct earlier numerical results at tree level and determine the one-loop results as well.
U2 - 10.1016/0370-2693(96)00299-7
DO - 10.1016/0370-2693(96)00299-7
M3 - Article
SN - 0370-2693
VL - 376
SP - 186
EP - 192
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 -