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arXiv · 0809.4996

QCD sum rules for D and B mesons in nuclear matter

T. Hilger·R. Thomas·B. Kampfer
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Abstract

QCD sum rules for D and B mesons embedded in cold nuclear matter are evaluated. We quantify the mass splitting of D - D-bar and B - B-bar mesons as a function of the nuclear matter density; extrapolated to saturation density it is in the order of 60 and 130 MeV driven essentially by the condensates , and . The genuine chiral condensate , amplified by heavy-quark masses, enters the Borel transformed sum rules for the mass splitting beyond linear density dependence. Including strange quark condensates reveals a umerically smaller and opposite effect for the Ds - Ds-bar mass splitting.

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T. Hilger, R. Thomas, B. Kampfer. 2008-10-29. QCD sum rules for D and B mesons in nuclear matter. https://doi.org/10.1103/physrevc.79.025202

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