Baryon masses and pion-nucleon σ-term to second order in the quark masses
نویسندگان
چکیده
منابع مشابه
Baryon Masses at Second Order in Chiral Perturbation Theory
We analyze the baryon mass differences up to second order in chiral perturbation theory, including the effects of decuplet intermediate states. We show that the Coleman–Glashow relation has computable corrections of order (md − mu)ms. These corrections are numerically small, and in agreement with the data. We also show that corrections to the Σ equal-spacing rule are dominated by electromagneti...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1996
ISSN: 0370-2693
DOI: 10.1016/0370-2693(95)01286-9