QCD SUM-RULES FOR NUCLEONS IN NUCLEAR-MATTER .2.

Citation
Xm. Jin et al., QCD SUM-RULES FOR NUCLEONS IN NUCLEAR-MATTER .2., Physical review. C. Nuclear physics, 47(6), 1993, pp. 2882-2900
Citations number
70
Categorie Soggetti
Physics, Nuclear
ISSN journal
05562813
Volume
47
Issue
6
Year of publication
1993
Pages
2882 - 2900
Database
ISI
SICI code
0556-2813(1993)47:6<2882:QSFNIN>2.0.ZU;2-2
Abstract
A correlator of QCD interpolating fields for the nucleon is evaluated in nuclear matter by applying an operator product expansion. All densi ty dependence is incorporated into the composite operator matrix eleme nts (condensates) taken in the nuclear matter ground state. The in-med ium condensates up to dimension five are estimated to first order in t he nucleon density. The key phenomenological inputs used in determinin g the quark and gluon condensates up to dimension four are the nucleon a term, the strangeness content of the nucleon, and quark and gluon d istribution functions deduced from deep-inelastic scattering experimen ts. Dimension-five quark and quark-gluon condensates, which give small contributions to the correlator, are estimated by a variety of techni ques. Contributions from dimension-six four-quark condensates are also included in a factorized form.