QCD sum rules for nucleons in nuclear matter III

Journal Article · Sat Jan 01 00:00:00 EST 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.464· OSTI ID:5408294

Jin, X; Nielsen, M; Cohen, T D ^[1]; Furnstahl, R J ^[2]; Griegel, D K ^[3]

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1. Department of Physics and Center for Theoretical Physics, University of Maryland, College Park, Maryland 20742 (United States)
2. Department of Physics, The Ohio State University, Columbus, Ohio 43210 (United States)
3. Department of Physics and Nuclear Theory Center, Indiana University, Bloomington, Indiana 47405 (United States)

The self-energies of quasinucleon states in nuclear matter are investigated using a finite-density QCD sum-rule approach developed previously. The sum rules are obtained for a general QCD interpolating field for the nucleon. The key phenomenological inputs are the nucleon [sigma] term, the strangeness content of the nucleon, and quark and gluon distribution functions deduced from deep-inelastic scattering. The emphasis is on testing the sensitivity and stability of sum-rule predictions to variations of the condensates and other input parameters. At nuclear matter saturation density, the Lorentz vector self-energy is found to be positive with a magnitude of a few hundred MeV, which is comparable to that suggested by relativistic nuclear phenomenology. This result is quite stable. The prediction for the scalar self-energy is very sensitive to the undertermined values of the in-medium four-quark condensates.

• DOE Contract Number: FG02-87ER40365; FG02-93ER40762
• OSTI ID: 5408294
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 49:1; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
NUCLEONS
NUCLEAR MATTER
SUM RULES
QUANTUM CHROMODYNAMICS
SELF-ENERGY
STABILITY
BARYONS
ELEMENTARY PARTICLES
ENERGY
EQUATIONS
FERMIONS
FIELD THEORIES
HADRONS
MATTER
QUANTUM FIELD THEORY
663110* - General & Average Properties of Nuclei & Nuclear Energy Levels- (1992-)
662230 - Quantum Chromodynamics- (1992-)
663300 - Nuclear Reactions & Scattering
General- (1992-)
662120 - General Theory of Particles & Fields- Symmetry
Conservation Laws
Currents & Their Properties- (1992-)