Published July 2004 | Version v1
Journal article Metadata-only

Pion radii in the nonlocal chiral quark model

Creators

  • 1. Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980, Dubna (Russian Federation)

Description

The electromagnetic radius of a charged pion and the transition radius of a neutral pion are calculated in the framework of the nonlocal chiral quark model. It is shown in this model that the vector meson contributions to the pion radii are noticeably suppressed in comparison with a similar contribution in the local Nambu-Jona-Lasinio model. The form factor for the process γ*π + π- is calculated for -1 GeV2<q2<1.6 GeV2. Our results are in satisfactory agreement with experimental data. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epja/i2003-10177-0

Additional details

Identifiers

DOI
10.1140/epja/i2003-10177-0;

Publishing Information

Journal Title
European Physical Journal. A
Journal Volume
21
Journal Issue
1
Journal Page Range
p. 155-159
ISSN
1434-6001

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
35082993
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
CHIRALITY; FEYNMAN DIAGRAM; LAGRANGIAN FIELD THEORY; PAIR PRODUCTION; PARTICLE RADII; PARTICLE STRUCTURE; PHOTOPRODUCTION; PIONS MINUS; PIONS NEUTRAL; PIONS PLUS; QUARK MODEL; QUARK-HADRON INTERACTIONS; YUKAWA NONLOCAL THEORY
Descriptors DEC
BASIC INTERACTIONS; BOSONS; COMPOSITE MODELS; DIAGRAMS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; FIELD THEORIES; HADRONS; INFORMATION; INTERACTIONS; MATHEMATICAL MODELS; MESONS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY