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Title: Theoretical support for the {pi}(1300) and the recently claimed f{sub 0}(1790) as molecular resonances

Abstract

A study of three-pseudoscalar {pi}KK and {pi}{pi}{eta} coupled system is made by solving the Faddeev equations within an approach based on unitary chiral dynamics. A resonance with total isospin one and spin-parity J{sup {pi}=}0{sup -} is found with mass {approx}1400 MeV when the KK system gets reorganized as the f{sub 0}(980). This resonance is identified with the {pi}(1300) listed by the Particle Data Group. Further, the two-body amplitude which describes the interaction between a {pi} and the f{sub 0}(980) is extracted from the study of the {pi}KK and {pi}{pi}{eta} system and is then employed to study the f{sub 0}(980){pi}{pi} system. As a result, a scalar resonance is found near 1790 MeV which drives the two f{sub 0}(980){pi} systems to resonate as the {pi}(1300) while the invariant mass of the two pions falls in the mass region of the scalar {sigma}(600). These findings support the existence of a new f{sub 0} resonance near 1790 MeV, as found by the BES and Crystal Barrel collaborations. Our results show that this f{sub 0}(1790) is definitely distinct to f{sub 0}(1710), the latter of which seems to possess a glueball structure dominantly.

Authors:
;  [1]; ;  [2]
  1. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
  2. Research Center for Nuclear Physics (RCNP), Mihogaoka 10-1, Ibaraki 567-0047 (Japan)
Publication Date:
OSTI Identifier:
21607785
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 84; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.84.074027; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; CHIRALITY; F0-980 MESONS; FADDEEV EQUATIONS; GEV RANGE 01-10; GLUEBALLS; INTERACTIONS; ISOSPIN; KAONS; MASS; PARITY; PI-1300 MESONS; PIONS; PSEUDOSCALARS; RESONANCE; SIGMA BARYONS; SPIN; TWO-BODY PROBLEM; ANGULAR MOMENTUM; BARYONS; BOSONS; ELEMENTARY PARTICLES; ENERGY RANGE; EQUATIONS; FERMIONS; GEV RANGE; HADRONS; HYPERONS; MANY-BODY PROBLEM; MESONS; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; SCALAR MESONS; STRANGE MESONS; STRANGE PARTICLES

Citation Formats

Martinez Torres, A., Jido, D., Khemchandani, K. P., and Hosaka, A. Theoretical support for the {pi}(1300) and the recently claimed f{sub 0}(1790) as molecular resonances. United States: N. p., 2011. Web. doi:10.1103/PHYSREVD.84.074027.
Martinez Torres, A., Jido, D., Khemchandani, K. P., & Hosaka, A. Theoretical support for the {pi}(1300) and the recently claimed f{sub 0}(1790) as molecular resonances. United States. doi:10.1103/PHYSREVD.84.074027.
Martinez Torres, A., Jido, D., Khemchandani, K. P., and Hosaka, A. Sat . "Theoretical support for the {pi}(1300) and the recently claimed f{sub 0}(1790) as molecular resonances". United States. doi:10.1103/PHYSREVD.84.074027.
@article{osti_21607785,
title = {Theoretical support for the {pi}(1300) and the recently claimed f{sub 0}(1790) as molecular resonances},
author = {Martinez Torres, A. and Jido, D. and Khemchandani, K. P. and Hosaka, A.},
abstractNote = {A study of three-pseudoscalar {pi}KK and {pi}{pi}{eta} coupled system is made by solving the Faddeev equations within an approach based on unitary chiral dynamics. A resonance with total isospin one and spin-parity J{sup {pi}=}0{sup -} is found with mass {approx}1400 MeV when the KK system gets reorganized as the f{sub 0}(980). This resonance is identified with the {pi}(1300) listed by the Particle Data Group. Further, the two-body amplitude which describes the interaction between a {pi} and the f{sub 0}(980) is extracted from the study of the {pi}KK and {pi}{pi}{eta} system and is then employed to study the f{sub 0}(980){pi}{pi} system. As a result, a scalar resonance is found near 1790 MeV which drives the two f{sub 0}(980){pi} systems to resonate as the {pi}(1300) while the invariant mass of the two pions falls in the mass region of the scalar {sigma}(600). These findings support the existence of a new f{sub 0} resonance near 1790 MeV, as found by the BES and Crystal Barrel collaborations. Our results show that this f{sub 0}(1790) is definitely distinct to f{sub 0}(1710), the latter of which seems to possess a glueball structure dominantly.},
doi = {10.1103/PHYSREVD.84.074027},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 7,
volume = 84,
place = {United States},
year = {2011},
month = {10}
}