Mesonic Correlation Functions in the Random Instanton Vacuum
arXiv:hep-ph/9302239 · doi:10.1016/0550-3213(93)90573-8
Abstract
A general model-independent discussion of mesonic correlation functions is given. We derive new inequalities, including one stronger than Weingarten's inequality. Mesonic correlation functions are calculated in the random instanton vacuum and are compared with phenomenological expectations and lattice results. Both diagonal and non-diagonal correlators of all strange and light flavored currents, as well as the most important unflavored ones are considered. Our results are used to extract the masses and the coupling constants of the corresponding mesons. Not only the qualitative behaviour is reproduced in all channels, but in several channels the model works with amazing accuracy
43 pages + 9 figures available upon request, SUNY-NTG-92/40
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