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New QCD Sum Rules for In-Medium Nucleons

Derek B. Leinweber·Xuemin Jin·R. J. Furnstahl
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Abstract

New QCD sum rules for nucleons in nuclear matter are derived from a mixed correlation function of spin-1/2 and spin-3/2 interpolating fields. These sum rules allow a determination of the scalar self-energy of the nucleon independent of the poorly known four-quark condensates. An analysis of these new sum rules in concert with previous nucleon sum rules from spin-1/2 interpolators indicates consistency with the expectations of relativistic mean-field phenomenology. We find $M^* = 0.68 \pm 0.08$ GeV and $Σ_v = 0.31 \pm 0.06$ GeV at nuclear matter saturation density.

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Derek B. Leinweber, Xuemin Jin, R. J. Furnstahl. 1995-11-28. New QCD Sum Rules for In-Medium Nucleons. https://arxiv.org/abs/nucl-th/9511031

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