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arXiv · hep-ph/0107175

Eta-eta' mixing in U(3) chiral perturbation theory

Niklas Beisert·Bugra Borasoy
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Abstract

We investigate eta-eta' mixing in infrared regularized U(3) chiral perturbation theory by calculating the eta and eta' masses up to one-loop order. From this analysis it becomes obvious that even at leading order eta-eta' mixing does not obey the usually assumed one-mixing angle scheme if large N_c counting rules are not employed.

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Niklas Beisert, Bugra Borasoy. 2001-07-16. Eta-eta' mixing in U(3) chiral perturbation theory. https://doi.org/10.1007/s100500170072

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