More detailed properties of. rho. and. phi. mesons from QCD sum rules

Journal Article · Thu Mar 01 04:00:00 EST 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.41.1709· OSTI ID:6849747

Martinovic, L ^[1]

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1. Joint Institute for Nuclear Research, Dubna, Head Post Office P.O. Box 79, 10100 Moscow, Union of Soviet Socialist Republics (SU) Institute of Physics of the Electro-Physical Research Center, Slovak Academy of Sciences, 842 28 Bratislava, Czechoslovakia (CS)

We reexamine the genuine Borel QCD sum rules for the {rho} and {phi} mesons using a simple numerical method to flatten the sum-rule {ital M}{sup 2} dependence in a wide range of {ital M}{sup 2}. Following Das {ital et} {ital al}., the imaginary part of the corresponding polarization operator is written in terms of the pion or kaon electromagnetic form factor, which we parametrize by means of simple formulas obeying requirements of analyticity and depending on the mass, the width, and the vector-meson-dominance coupling-constant ratio for the given vector meson. The determined resonance parameters are close to their experimental values. Furthermore, the influence of the nonstandard'' values of the gluon and four-quark condensates on the vector-meson properties is also studied.

• OSTI ID: 6849747
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 41:5; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645204 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
COUPLING CONSTANTS
ELECTROMAGNETIC FORM FACTORS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FIELD THEORIES
FORM FACTORS
FUNCTIONS
GLUONS
HADRONS
KAONS
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
PARTICLE PROPERTIES
PHI-1020 MESONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKONIUM
QUARKS
RHO-770 MESONS
SPECTRAL FUNCTIONS
STRANGE MESONS
STRANGE PARTICLES
STRANGEONIUM
SUM RULES
VECTOR DOMINANCE MODEL
VECTOR MESONS