Composite-meson model and meson exchange currents

Autor:	R. Ya. Kezerashvili, Vladimir S. Boyko
Rok vydání:	2007
Předmět:	Quark Physics Nuclear and High Energy Physics Particle physics Meson Forward scatter High Energy Physics::Lattice High Energy Physics::Phenomenology Nuclear Theory Composite number Hadron Diagram Nuclear physics Pion Nuclear fusion High Energy Physics::Experiment Nuclear Experiment
Zdroj:	The European Physical Journal A. 31:662-664
ISSN:	1434-601X 1434-6001
DOI:	10.1140/epja/i2006-10192-7
Popis:	We study the meson exchange currents (MEC) mechanism for the pion double-charge exchange (DCX) reaction in a composite-meson model. The model assumes that the mesons are two-quark systems and can interact with each other only through quark loops. The contributions of the ρ, σ, and f 0 mesons, the four-quark box diagram as well as a contact diagram has been taken into account. It is shown that the contribution of the ρ, σ, and f 0 mesons increases the forward scattering cross-section in an average by 25% and decreases with energy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ba954df6a7cb430013cb0cebe2a0077a https://doi.org/10.1140/epja/i2006-10192-7 Zobrazit plný text záznamu Plný text ve formátu PDF