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Title: Study of exotic hadrons in S-wave scatterings induced by chiral interaction in the flavor symmetric limit

Abstract

We study s-wave bound states of a hadron and a light pseudoscalar meson induced by the Weinberg-Tomozawa (WT) interaction in the flavor SU(3) symmetric limit. The WT interaction is a driving force to generate quasibound states dynamically in the chiral unitary approaches. The strength and sign of the WT interaction are determined only by the group theoretical structure of the target hadrons, and we present a general expression of the strengths for the flavor SU(3) case. We show that, for the channels which are more exotic than the target, the interaction is repulsive in most cases, and the strength of the attractive interaction is universal for any possible target states. We demonstrate that the attractive coupling is not strong enough to generate an exotic state from the physically known masses of target hadrons. In addition, we also find a nontrivial N{sub c} dependence of the coupling strengths. We show that the channels which are attractive at N{sub c}=3 change into repulsive ones for large N{sub c}, and, therefore, no attractive interaction exists in exotic channels in the large-N{sub c} limit.

Authors:
; ;  [1];  [2]
  1. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
  2. (RCNP), Ibaraki, Osaka 567-0047 (Japan)
Publication Date:
OSTI Identifier:
21010978
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevD.75.034002; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BOUND STATE; CHIRALITY; COUPLING; FLAVOR MODEL; PARTICLE INTERACTIONS; PSEUDOSCALAR MESONS; QUASIBOUND STATE; REST MASS; S WAVES; SU-3 GROUPS

Citation Formats

Hyodo, Tetsuo, Jido, Daisuke, Hosaka, Atsushi, and Research Center for Nuclear Physics. Study of exotic hadrons in S-wave scatterings induced by chiral interaction in the flavor symmetric limit. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.034002.
Hyodo, Tetsuo, Jido, Daisuke, Hosaka, Atsushi, & Research Center for Nuclear Physics. Study of exotic hadrons in S-wave scatterings induced by chiral interaction in the flavor symmetric limit. United States. doi:10.1103/PHYSREVD.75.034002.
Hyodo, Tetsuo, Jido, Daisuke, Hosaka, Atsushi, and Research Center for Nuclear Physics. Thu . "Study of exotic hadrons in S-wave scatterings induced by chiral interaction in the flavor symmetric limit". United States. doi:10.1103/PHYSREVD.75.034002.
@article{osti_21010978,
title = {Study of exotic hadrons in S-wave scatterings induced by chiral interaction in the flavor symmetric limit},
author = {Hyodo, Tetsuo and Jido, Daisuke and Hosaka, Atsushi and Research Center for Nuclear Physics},
abstractNote = {We study s-wave bound states of a hadron and a light pseudoscalar meson induced by the Weinberg-Tomozawa (WT) interaction in the flavor SU(3) symmetric limit. The WT interaction is a driving force to generate quasibound states dynamically in the chiral unitary approaches. The strength and sign of the WT interaction are determined only by the group theoretical structure of the target hadrons, and we present a general expression of the strengths for the flavor SU(3) case. We show that, for the channels which are more exotic than the target, the interaction is repulsive in most cases, and the strength of the attractive interaction is universal for any possible target states. We demonstrate that the attractive coupling is not strong enough to generate an exotic state from the physically known masses of target hadrons. In addition, we also find a nontrivial N{sub c} dependence of the coupling strengths. We show that the channels which are attractive at N{sub c}=3 change into repulsive ones for large N{sub c}, and, therefore, no attractive interaction exists in exotic channels in the large-N{sub c} limit.},
doi = {10.1103/PHYSREVD.75.034002},
journal = {Physical Review. D, Particles Fields},
number = 3,
volume = 75,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2007},
month = {Thu Feb 01 00:00:00 EST 2007}
}