Low lying axial-vector mesons as dynamically generated resonances

Journal Article · Fri Jul 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.014002· OSTI ID:20711044

Roca, L; Oset, E; Singh, J ^[1]

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1. Departamento de Fisica Teorica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigacion de Paterna, Aptdo. 22085, 46071 Valencia (Spain)

We make a theoretical study of the s-wave interaction of the nonet of vector mesons with the octet of pseudoscalar mesons starting from a chiral invariant Lagrangian and implementing unitarity in coupled channels. By looking for poles in the unphysical Riemann sheets of the unitarized scattering amplitudes, we get two octets and one singlet of axial-vector dynamically generated resonances. The poles found can be associated with most of the low lying axial-vector resonances quoted by the Particle Data Group: b{sub 1}(1235), h{sub 1}(1170), h{sub 1}(1380), a{sub 1}(1260), f{sub 1}(1285), and two poles to the K{sub 1}(1270) resonance. We evaluate the couplings of the resonances to the VP states and the partial decay widths in order to reinforce the arguments in the discussion.

• OSTI ID: 20711044
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
A1-1260 MESONS
B1-1235 MESONS
CHIRALITY
COUPLED CHANNEL THEORY
F1-1285 MESONS
H1-1170 MESONS
K1-1270 MESONS
LAGRANGIAN FUNCTION
MESON NONETS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE WIDTHS
PSEUDOSCALAR MESONS
RIEMANN SHEET
S WAVES
SCATTERING AMPLITUDES
UNITARITY
VECTOR MESONS