Effects of Flavor Mixing Induced by Axial Anomaly on the Quark Condensates and Meson Spectra

Kunihiro, Teiji; Hatsuda, Tetsuo

doi:10.1016/0370-2693(88)91596-1

Effects of Flavor Mixing Induced by Axial Anomaly on the Quark Condensates and Meson Spectra

Teiji Kunihiro
(
- Ryukoku U.
)
,
Tetsuo Hatsuda
(
- KEK, Tsukuba
)

Dec, 1987

6 pages

Published in:

Phys.Lett.B 206 (1988) 385-390,
Phys.Lett.B 210 (1988) 278-278 (erratum)

Published: May 26, 1988

DOI:

10.1016/0370-2693(88)91596-1,
10.1016/0370-2693(88)90386-3 (erratum)

Report number:

KEK-TH-190,
KEK-Preprint-87-135

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Abstract: (Elsevier)

Effects of the U A (1) anomaly as well as the explicit breaking of SU f (3) symmetry are analyzed both for the quark condensates and meson spectra using a QCD motivated effective lagrangian. After developing a systematic way to treat the instanton induced six-Fermi interaction representing the anomaly, we determine the strength of the anomaly term so as to reproduce meson masses and the pion decay constant. The spectra of the Nambu-Goldstone (NG) bosons (π, K, η) and the would-be NG boson (η') are evaluated without recource to the chiral perturbations. The s¯s contents of nucleons arising from the flavour mixing is also evaluated.

ANOMALY: AXIAL
SYMMETRY BREAKING: SU(3)
QUARK: CONDENSATION
QUARK: MASS
MASS: QUARK
INTERFERENCE: FLAVOR
MESON: MASS SPECTRUM
MASS SPECTRUM: MESON
QUANTUM CHROMODYNAMICS: EFFECTIVE LAGRANGIANS
EFFECT: INSTANTON

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