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arXiv · hep-ph/9311349

What do heavy-light ($ Q\bar{q} $) quark systems tell us about QCD vacuum properties?

Ariel R. Zhitnitsky
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Abstract

Arguments in favor of a large magnitude ( at least two- three times bigger than its factorized value) of the mixed vacuum condensate $ \la \bar{q}G_{μν}^a G_{μν}^a q \ra$ are given. The analysis is based on the strict inequalities which follow from the QCD sum rules method and on very plausible phenomenological assumptions like $ m_{B_s} > m_{B_u} $ for the few lowest exited $ Q\bar{q} $ states in a heavy quark limit $m_Q\rightarrow\infty $. The same arguments show the suppression of the $SU(3)$ symmetry breaking effects for vacuum condensates when the additional gluon fields are included.

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Ariel R. Zhitnitsky. 1993-11-23. What do heavy-light ($ Q\bar{q} $) quark systems tell us about QCD vacuum properties?. https://doi.org/10.1016/0370-2693(94)90039-6

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