Light-Meson Two-Photon Decays in Full QCD
We present a study of two-photon decays of light mesons, focusing on the neutral pion decay. This important process highlights the effects of the axial anomaly in QCD but has been little studied on the lattice. By applying the Lehmann-Symanzik-Zimmermann (LSZ) reduction formula, we reconstruct the electromagnetic matrix elements from three-point vector-vector Green functions calculated on 2+1-flavor isotropic clover lattices.
- Research Organization:
- Thomas Jefferson Lab National Accelerator Facility
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 956095
- Report Number(s):
- JLAB-THY-08-906; arXiv:0810.5550; DOE/OR/23177-0528
- Country of Publication:
- United States
- Language:
- English
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