Description of intermediate- and short-range NN nuclear force within a covariant effective field theory

Journal Article · Tue Nov 01 04:00:00 EST 2005 · Annals of Physics (New York)

DOI:https://doi.org/10.1016/j.aop.2005.05.008· OSTI ID:20690203

Faessler, Amand ^[1]; Kukulin, V I ^[2]; Shikhalev, M A ^[3]

---

1. Institut fuer Theoretische Physik, Universitaet Tuebingen, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)
2. Institute of Nuclear Physics, Moscow State University, 119899 Moscow (Russian Federation)
3. Joint Institute for Nuclear Research, Moscow Region, 141980 Dubna (Russian Federation)

The present paper is aimed to developing an effective field theory in the GeV region to describe consistently both elastic and inelastic NN scattering in a fully covariant way. In this development we employ our novel s-channel mechanism of NN interaction at intermediate and short ranges assuming a formation of the six-quark bag dressed with basic meson fields such as {pi}, {sigma}, {rho}, and {omega} in the intermediate state. The peripheral part of the interaction is governed by t-channel one- and two-pion exchanges described fairly well by chiral perturbation theory. The {sigma}-meson dressing should be especially important for the stabilization of the bag due to a high coupling constant of the {sigma}-meson with the bag and also a strong interaction between the {sigma}-field and space symmetric quark core |s{sup 6}[6]>. This stabilization of the intermediate dressed bag (which shifts the mass of the bag downward to NN threshold) will be crucially important for the description of {pi}, 2{pi}, {rho}, and {omega}-meson production in NN collisions, and, in particular, for the correct description of {pi} {sup 0} production near threshold. So that, we expect that the results of the present work will lead to a deeper understanding the short- and intermediate-range nuclear forces and internucleon correlations in nuclei.

• OSTI ID: 20690203
• Journal Information: Annals of Physics (New York), Journal Name: Annals of Physics (New York) Journal Issue: 1 Vol. 320; ISSN 0003-4916; ISSN APNYA6
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRALITY
COUPLING CONSTANTS
GEV RANGE
INELASTIC SCATTERING
INTERMEDIATE STATE
NUCLEAR FORCES
NUCLEON-NUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
OMEGA BARYONS
PARTICLE PRODUCTION
PERTURBATION THEORY
PIONS NEUTRAL
QUANTUM FIELD THEORY
QUARKS
S CHANNEL
STABILIZATION
STRONG INTERACTIONS
T CHANNEL
TENSOR MESONS
VECTOR MESONS