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Gasser-Leutwyler Coefficients of Chiral Lagrangian for
Pseudoscalar Goldstone Bosons
ZHOU Li-Juan, WU Qing, PAN Ji-Huan, MENG Cheng-Ju, MA Wei-Xing,, and LI Xi-Guo
Communications in Theoretical Physics
Based on the Dyson-Schwinger equations in rainbow approximation for quark propagator with an effective gluon propagator, and on the parametrized fully dressed quark propagator proposed by us, the unknown Gasser-Leutwyler coefficients of the chiral Lagrangian
for pseudoscalar Goldstone bosons,
Li, are predicted
respectively. The predicted values of
Li in the two different
ways are not only in reasonable agreement each other but also in
agreement with empirical values used widely in literature and the
values predicted by many other theoretical models with QCD
characteristics. The compatible results of Gasser-Leutwyler
coefficients predicted by our parameterized quark propagator, in
turn, clearly verify its extensive validity.
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