QCD sum rules for [Delta] isobar in nuclear matter

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.51.2260· OSTI ID:6586538

Jin, X ^[1]

---

1. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada)

The self-energies of [Delta] isobars propagating in nuclear matter are calculated using the finite-density QCD sum-rule methods. The calculations show that the Lorentz vector self-energy for the [Delta] is significantly smaller than the nucleon vector self-energy. The magnitude of the [Delta] scalar self-energy is larger than the corresponding value for the nucleon, which suggests a strong attractive net self-energy for the [Delta]; however, the prediction for the scalar self-energy is very sensitive to the density dependence of certain in-medium four-quark condensate. Phenomenological implications for the couplings of the [Delta] to the nuclear scalar and vector fields are briefly discussed.

• OSTI ID: 6586538
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 51:4; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

662130 -- General Theory of Particles & Fields-- S-Matrix Theory
Relativistic Scattering Theory-- (1992-)
662230 -- Quantum Chromodynamics-- (1992-)
663110 -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663300* -- Nuclear Reactions & Scattering
General-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
COUPLING
DELTA BARYONS
ELEMENTARY PARTICLES
ENERGY
EQUATIONS
FERMIONS
FIELD THEORIES
HADRONS
ISOBARIC NUCLEI
MATTER
N BARYONS
NUCLEAR MATTER
NUCLEI
NUCLEONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
SCALARS
SELF-ENERGY
SUM RULES
TENSORS
VECTORS