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arxiv: hep-ph/0510156 · v1 · submitted 2005-10-12 · ✦ hep-ph · nucl-th

Evidence for In-Medium Changes of Four-Quark Condensates

classification ✦ hep-ph nucl-th
keywords changescondensatesevidencefour-quarkgammain-mediumomegaapproach
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Utilizing the QCD sum rule approach to the behavior of the omega meson in nuclear matter we derive evidence for in-medium changes of particular four-quark condensates from the recent CB-TAPS experiment for the reaction gamma + A -> A' + omega (-> pi0 gamma) with A = Nb and LH2.

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