Matches in SemOpenAlex for { <https://semopenalex.org/work/W2056573569> ?p ?o ?g. }
- W2056573569 abstract "In the framework of the Schwinger-Dyson equation and the Bethe-Salpeter equation in the improved ladder approximation, we calculate the pi^+ - pi^0 mass difference on the same footing as the pion decay constant and the QCD S parameter (or L_{10}) through the difference between the vector current correlator Pi_{VV} and the axial-vector current correlator Pi_{AA}. We find that all the results can be fit to the experimental values for rather large Lambda_{QCD} sim 700 MeV which reflects the ``scale ambiguity''. By fitting to the calculated data using the pole saturated form of Pi_{VV} - Pi_{AA}, we also derive masses and decay constants of rho meson and a_1 meson, which we found are consistent with the experiments rather insensitively to the ``scale ambiguity''." @default.
- W2056573569 created "2016-06-24" @default.
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- W2056573569 date "2004-08-20" @default.
- W2056573569 modified "2023-09-25" @default.
- W2056573569 title "<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mo>−</mml:mo><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>mass difference from the Bethe-Salpeter equation" @default.
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- W2056573569 doi "https://doi.org/10.1103/physrevd.70.033009" @default.
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