Light vector correlator in medium: Wilson coefficients up to dimension 6 operators

Abstract

As an improvement of the QCD sum rule method to study modifications of light vector mesons in nuclear matter and/or at finite temperature, we calculate the Wilson coefficients of all independent gluonic non-scalar operators up to dimension 6 in the operator product expansion (OPE) of the vector channel for light quarks. To obtain the gluon part of the light quark OPE from the heavy quark one, we also compute the heavy quark expansion of the relevant quark condensates. Together with the results for the quark operators that are already available in the literature, this completes the OPE of the vector channel in a hot or dense medium for operators up to dimension 6.

6 pages, no figure

References in corpus (13)

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• Measurement of the in-medium phi-meson width in proton-nucleus collisions
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Cited by in corpus (6)

• Recent Progress in QCD Condensate Evaluations and Sum Rules
• The $\varphi$ meson with finite momentum in a dense medium
• Disentangling longitudinal and transverse modes of the $\varphi$ meson through dilepton and kaon decays
• $\varphi$ meson properties in nuclear matter from QCD sum rules with chirally separated four-quark condensates
• Finite temperature sum rules in the vector channel at finite momentum
• Nonlocal gluon condensates in QCD sum rules