Published September 15, 1997 | Version v1
Journal article Metadata-only

Exactly solvable models of baryon spectroscopy

Creators

  • 1. Dipartimento di Fisica dell'Universita di Genova, I.N.F.N., Sezione di Genova, via Dodecaneso 33, 16164 Genova (Italy)
  • 2. Yale Univ., New Haven, CT (United States). Center for Theoretical Physics

Description

We present an exactly solvable model of baryon spectroscopy which has O(7) dynamic symmetry and is based on a hyperCoulomb three-body quark potential. The corresponding form factors, which are calculated analytically, show a power-law behavior as a function of momentum transfer Q2. Because of the O(7) symmetry there is a degeneracy between the Roper resonance and the negative parity excited states, in qualitative agreement with the observed spectrum. A linear confinement term is also added. The SU(6) symmetry is broken by a spin-spin interaction and by a small tensor term. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Physics. A
Journal Volume
623
Journal Issue
1-2
Journal Page Range
p. 100-109.
ISSN
0375-9474
CODEN
NUPABL

Conference

Title
1. workshop on hadron dynamics with the new DAONE and CEBAF facilities.
Dates
11-14 Nov 1996.
Place
Frascati (Italy).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
29002697
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
DELTA BARYONS; ELECTROMAGNETIC FORM FACTORS; EXCITED STATES; J-J COUPLING; N-1440 BARYONS; O GROUPS; PARTICLE STRUCTURE; PROTONS; QUARK MODEL; QUARK-QUARK INTERACTIONS; REST MASS; SU-6 GROUPS; SYMMETRY BREAKING; TENSOR FORCES; THREE-BODY PROBLEM
Descriptors DEC
BARYONS; CATIONS; CHARGED PARTICLES; COMPOSITE MODELS; COUPLING; DYNAMICAL GROUPS; ELEMENTARY PARTICLES; ENERGY LEVELS; FERMIONS; FORM FACTORS; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INTERACTIONS; INTERMEDIATE COUPLING; IONS; LIE GROUPS; MANY-BODY PROBLEM; MASS; MATHEMATICAL MODELS; N BARYONS; N*BARYONS; NUCLEONS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PROPERTIES; SU GROUPS; SYMMETRY GROUPS

Optional Information

Notes
13 refs.