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


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

Buchheim, T.; Hilger, T.; Kämpfer, B.

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.

Permalink: https://www.hzdr.de/publications/Publ-20846
Publ.-Id: 20846