Grange, Pierre and Mathiot, Jean-Francois and Werner, Ernst (2020) The fate of the axial anomaly in a finite field theory. INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 35 (5): 2050025. ISSN 0217-751X, 1793-656X
Full text not available from this repository. (Request a copy)Abstract
The conservation of the vector current and the axial anomaly responsible for the pi(0) -> gamma gamma decay amplitude are obtained in leading order within the Taylor-Lagrange formulation of fields considered as operator-valued distributions. As for gauge theories, where this formulation eliminates all divergences and preserves gauge symmetry, it is shown that the different contributions can be evaluated directly in four-dimensional space-time, with no restrictions whatsoever on the four-momentum of the internal loop, and without the need to introduce any additional nonphysical degrees of freedom like Pauli-Villars fields. We comment on the similar contributions responsible for the decay of the Higgs boson into two photons.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EPSTEIN-GLASER RENORMALIZATION; Quantum field theory; regularization; axial anomaly |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 30 Mar 2021 07:16 |
| Last Modified: | 30 Mar 2021 07:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/45082 |
Actions (login required)
 |
View Item |
