Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-01-31
ActaPhys.Polon.B38:2777-2788,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, invited talk at ``Final Euridice Meeting'', August 24-28 2006, Kazimierz, Poland
Scientific paper
A summary of recent progress in Chiral Perturbation Theory (ChPT) at the two-loop level is given. A short introduction to ChPT is included, along with an explanation of the usefulness of developing ChPT for partially quenched QCD. Further, our recent work in partially quenched ChPT is reviewed, and a few comments are given on older work in mesonic ChPT at the two-loop level. In particular, we quote the present best values for the low-energy constants of the $\mathcal{O}(p^4)$ chiral Lagrangian.
Bijnens Johan
Danielsson Niclas
Lahde Timo A.
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