SU(6) extension of the Weinberg-Tomozawa meson-baryon Lagrangian

Journal Article · Tue Aug 01 00:00:00 EDT 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.034025· OSTI ID:20869257

Garcia-Recio, C; Nieves, J; Salcedo, L L ^[1]

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1. Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Granada, E-18071 Granada (Spain)

A consistent SU(6) extension of the Weinberg-Tomozawa meson-baryon chiral Lagrangian is constructed which incorporates vector meson and baryon decuplet degrees of freedom. The corresponding Bethe-Salpeter approximation predicts the existence of an isoscalar spin-parity (3{sup -}/2) K*N bound state (strangeness +1) with a mass around 1.7-1.8 GeV. It is the highest hypercharge state of an antidecuplet SU(3) representation and it is unstable through K* decay. The estimated width of this state (neglecting d-wave KN decay) turns out to be small ({gamma}{<=}15 MeV). Clear signals of this resonance would be found in reactions like {gamma}p{yields}K{sup 0}pK{sup +}{pi}{sup -} by looking at the three body pK{sup +}{pi}{sup -} invariant mass.

• OSTI ID: 20869257
• Journal Information: Physical Review. D, Particles Fields, Vol. 74, Issue 3; Other Information: DOI: 10.1103/PhysRevD.74.034025; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
BETHE-SALPETER EQUATION
BOUND STATE
CHIRALITY
D WAVES
DEGREES OF FREEDOM
GEV RANGE
HYPERCHARGE
K*-892 MESONS
KAONS NEUTRAL
KAONS PLUS
LAGRANGIAN FUNCTION
MEV RANGE
PARITY
PARTICLE DECAY
PARTICLE WIDTHS
PIONS MINUS
PROTONS
REST MASS
SPIN
STRANGENESS
SU-3 GROUPS
SU-6 GROUPS
THREE-BODY PROBLEM