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oai:docta.ucm.es:20.500.14352/587452023-08-27T23:29:35Zcom_20.500.14352_14col_20.500.14352_15

Alvarez Estrada, R F Dobado González, Antonio Gómez Nicola, Ángel 2023-06-20T18:50:30Z 2023-06-20T18:50:30Z 1994-04-07 0370-2693 10.1016/0370-2693(94)90204-6 https://hdl.handle.net/20.500.14352/58745 http://dx.doi.org/10.1016/0370-2693(94)90204-6 http://www.sciencedirect.com/ http://arxiv.org/abs/hep-ph/9401282 We analyze the finite temperature (T) extension of the Wess-Zumino-Witten functional, discussed in a previous work, to one loop in chiral perturbation theory. As a phenomenological application, we calculate finite temperature corrections to the amplitude of pi0 decay into two photons. This calculation is performed in three limits : i) T/M(pi) << 1, ii) the chiral limit at finite T and iii) T/M(pi) >> 1 (M(pi) being the pion mass). The T-corrections tend to vanish in the chiral limit, where only the kaon contribution remains (although it is exponentially suppressed). eng open access One-loop calculations on the wess-zumino-witten anomalous functional at finite-temperature journal article