Decay constants and SU(2) mass splittings of pseudoscalar mesons

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Abstract
Borel-transformed QCD sum rules are applied to pseudoscalar mesons containing a light antiquark and a light or heavy quark. We determine the decay constants and the SU(2) mass splittings of these mesons. A suitable method of extracting the hadronic parameters from the sum rules is discussed in detail. The relationship of these sum rules to the current algebra sum rules is emphasized. Our results are in good agreement with the experimental results, where available.

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