Propagators of light scalar mesons

Journal Article · Wed Dec 01 00:00:00 EST 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.111901· OSTI ID:20698089

Achasov, N N; Kiselev, A V ^[1]

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1. Laboratory of Theoretical Physics, Sobolev Institute for Mathematics, Novosibirsk, 630090 (Russian Federation)

For the first time, as far as we know, in field theory are found explicit forms of propagators satisfying the Kaellen-Lehmann representation. To be exact, it is shown that scalar meson propagators, taking into account a virtual intermediate state contribution to the resonance self-energy, satisfy the Kaellen-Lehmann representation in the wide domain of coupling constants of the light scalar mesons with the two-particle states. It is proposed to use these propagators in routine fitting data about light scalar mesons to reveal physics underlying the light scalar mesons.

• OSTI ID: 20698089
• Journal Information: Physical Review. D, Particles Fields, Vol. 70, Issue 11; Other Information: DOI: 10.1103/PhysRevD.70.111901; (c) 2004 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
COUPLING CONSTANTS
INTERMEDIATE STATE
PROPAGATOR
QUANTUM FIELD THEORY
SCALAR MESONS
SELF-ENERGY