Existence of {sigma}(600)/{kappa}(900)-particle and new chiral scalar nonet 'chiralons'

Journal Article · Fri May 29 04:00:00 EDT 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.56060· OSTI ID:21185757

Ishida, Muneyuki ^[1]; Ishida, Shin ^[2]

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1. Department of Physics, University of Tokyo, Tokyo 113 (Japan)
2. Atomic Energy Research Institute, College of Science and Technology, Nihon University, Tokyo 101 (Japan)

The {sigma}(600) and {kappa}(900), observed in the phase shift analyses [1,2], satisfy rather well the mass and width relation predicted by the SU(3)L{sigma}M and the SU(3)L{sigma}M with the vector and axial-vector meson nonets, and deserve to be the members of scalar {sigma}-nonet, together with the observed resonances a{sub 0}(980) and f{sub 0}(980), as a chiral partner of pseudoscalar {pi}-nonet. In the phase shift analyses an introduction of repulsive background phase {delta}{sub BG} is essential, whose origin has a close connection to the {lambda}{phi}{sup 4} interaction in L{sigma}M. It is argued that the members of this {sigma}-nonet, 'Chiralons', have different properties and should be discriminated from the conventional {sup 3}P{sub 0}-qq-bar-scalar nonet.

• OSTI ID: 21185757
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 432; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
A0-980 MESONS
AXIAL VECTOR MESONS
CHIRAL SYMMETRY
CHIRALITY
F0-980 MESONS
LAGRANGIAN FIELD THEORY
MESON NONETS
PARTICLE DECAY
PARTICLE WIDTHS
PHASE SHIFT
PHI4-FIELD THEORY
RESONANCE PARTICLES
REST MASS
S MATRIX
SU-3 GROUPS