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Title: Pion double charge exchange in a composite-meson model

Abstract

The pion double charge exchange amplitude is evaluated in a composite-meson model based on the four-quark interaction. The model assumes that the mesons are two-quark systems and can interact with each other only through quark loops. To evaluate the meson exchange current contribution, the form factors of the two-pion decay modes of the {rho},{sigma}, and f{sub 0} mesons have been used in the calculations. The contribution of the four-quark box diagram has been taken into account as well as a contact diagram. The contributions of the {rho},{sigma}, and f{sub 0} mesons increase the forward scattering cross section, which depends weakly on the energy.

Authors:
;  [1]
  1. New York City College of Technology, City University of New York, 300 Jay Street, Brooklyn, New York 11201 (United States)
Publication Date:
OSTI Identifier:
20990971
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevC.75.015203; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BOSON-EXCHANGE MODELS; CHARGE EXCHANGE; D S MESONS; FEYNMAN DIAGRAM; FORM FACTORS; HADRONIC PARTICLE DECAY; NUCLEAR MODELS; PION-NUCLEON INTERACTIONS; PIONS; QUARKS; RHO-770 MESONS

Citation Formats

Kezerashvili, R. Ya., and Boyko, V. S.. Pion double charge exchange in a composite-meson model. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.015203.
Kezerashvili, R. Ya., & Boyko, V. S.. Pion double charge exchange in a composite-meson model. United States. doi:10.1103/PHYSREVC.75.015203.
Kezerashvili, R. Ya., and Boyko, V. S.. Mon . "Pion double charge exchange in a composite-meson model". United States. doi:10.1103/PHYSREVC.75.015203.
@article{osti_20990971,
title = {Pion double charge exchange in a composite-meson model},
author = {Kezerashvili, R. Ya. and Boyko, V. S.},
abstractNote = {The pion double charge exchange amplitude is evaluated in a composite-meson model based on the four-quark interaction. The model assumes that the mesons are two-quark systems and can interact with each other only through quark loops. To evaluate the meson exchange current contribution, the form factors of the two-pion decay modes of the {rho},{sigma}, and f{sub 0} mesons have been used in the calculations. The contribution of the four-quark box diagram has been taken into account as well as a contact diagram. The contributions of the {rho},{sigma}, and f{sub 0} mesons increase the forward scattering cross section, which depends weakly on the energy.},
doi = {10.1103/PHYSREVC.75.015203},
journal = {Physical Review. C, Nuclear Physics},
number = 1,
volume = 75,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}