Eur. Phys. J. A 11, 329-339 (2001)
mixing in U(3) chiral perturbation theoryN. Beisert and B. Borasoy
Physik Department, Technische Universität München, D-85747 Garching, Germany firstname.lastname@example.org
(Received: 12 March 2001 / Revised version: 19 June 2001 Communicated by A. Schäfer)
We investigate - mixing in infrared regularized U(3) chiral perturbation theory by calculating the and masses up to one-loop order. From this analysis it becomes obvious that even at leading order --mixing does not obey the usually assumed one-mixing-angle scheme if large counting rules are not employed.
12.39.Fe - Chiral Lagrangians.
14.40.-n - Mesons.
© Società Italiana di Fisica, Springer-Verlag 2001