QCD sum rules and vector-meson masses and widths

Journal Article · Wed Apr 01 04:00:00 EST 1987 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.35.2178· OSTI ID:6058186

Das, A; Mathur, V S; Panigrahi, P

This paper deals with a determination of both the masses and the widths of vector mesons using QCD sum rules. The lowest-lying contribution to the dispersion integral arising from the state of two pseudoscalar mesons is written in terms of the meson form factor. The form factor is expressed in a Breit-Wigner or a related form, which involves the mass and the width of the vector-meson resonance. Using this technique, the QCD sum rule has been used to determine the resonance parameters of the rho, K/sup */, and phi mesons.

• Research Organization: Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627
• OSTI ID: 6058186
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 35:7; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BREIT-WIGNER FORMULA
COUPLING CONSTANTS
ELEMENTARY PARTICLES
EQUATIONS
FIELD THEORIES
FORM FACTORS
HADRONS
MASS
MESONS
PARTICLE PROPERTIES
PARTICLE WIDTHS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RENORMALIZATION
SUM RULES
VECTOR MESONS