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arXiv · 1409.2228

Defining medium-specific condensates in QCD sum rules for $D$ and $B$ mesons

T. Buchheim·T. Hilger·B. Kampfer
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Abstract

QCD sum rules for $D$ and $B$ mesons in a strongly interacting environment require the decomposition of Gibbs averaged operators related to tensor structures. We present a procedure to decompose these operators into vacuum and medium-specific parts, thus defining plain medium-specific condensates with coefficients vanishing in vacuum. Our decomposition allows for an identification of potential elements of order parameters for chiral restoration, in particular for higher mass-dimension quark-condensates which would be masked otherwise if operators with uncontracted Lorentz indices would be linked to DIS amplitudes.

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T. Buchheim, T. Hilger, B. Kampfer. 2014-09-08. Defining medium-specific condensates in QCD sum rules for $D$ and $B$ mesons. https://arxiv.org/abs/1409.2228

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