Pion form factor

Journal Article · Mon Jul 23 04:00:00 EDT 1979 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.43.246· OSTI ID:5924177

Farrar, G R; Jackson, D R

We give the normalized leading asymptotic Q/sup 2/ dependence of the pion form factor in quantum chromodynamics: F/sub (/(Q/sup 2/) ..-->.. /sub Q/2/sub arrow-rightplus-or-minusinfinity/-2f/sub (/ /sup 2//bQ/sup 2/lnvertical-barQ/sup 2/vertical-bar, where f/sub (/ is the pion decay constant and b = (11-2/3N/sub f/)/16..pi../sup 2/. Up to non--leading-logarithmic corrections, this is equivalent to F/sub (/(Q/sup 2/) ..-->.. /sub Q/2/sub arrow-rightplus-or-minusinfinity/8..pi cap alpha../sub s/(Q/sup 2/) f/sub (/ /sup 2//(-Q/sup 2/). These results are obtained by solving the light-cone pion Bethe-Salpeter equation in quantum chromodynamics to leading-logarithmic accuracy.

• Research Organization: California Institute of Technology, Pasadena, California 91125
• OSTI ID: 5924177
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 43:4; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645202 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMPTOTIC SOLUTIONS
BETHE-SALPETER EQUATION
BOSONS
DECAY
ELECTROMAGNETIC FORM FACTORS
ELEMENTARY PARTICLES
EQUATIONS
FIELD THEORIES
FORM FACTORS
FUNCTIONS
HADRONS
LIGHT CONE
MESONS
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RENORMALIZATION
SPACE-TIME
WAVE FUNCTIONS