Chiral lagrangian from quarks with dynamical mass

نویسنده

  • B. Ho
چکیده

We develop a simple model for coupling the pseudo-Goldstone bosons of QCD Or's, K's, -q) to quark fields. This nonlocal model incorporates a momentum dependent dynamical quark mass ,~ (p) in a manner consistent with global chiral symmetry. Explicit current quark masses and gauge fields are also introduced. All low energy parameters of the chiral lagrangian are expressed in terms of ~(p). In particular we obtain the ten coefficients of order pa terms in the energy expansion. The physical values for too, mR +, inK0 , f#, and fn are used to determine the three current quark masses, the constituent quark mass, and the quark condensate. The results are in surprisingly good agreement with the experimental values.

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تاریخ انتشار 2002