Two-photon decay width of the sigma meson

Two-photon decay width of the sigma meson

Dettagli Bibliografici
Parent link:	Physical Review D: covering particles, fields, gravitation, and cosmology.— , 1958- Vol. 77, iss. 3.— 2008.— [034007, 6 p.]
Altri autori:	Faessler A., Gutsche Th., Lyubovitskiy (Lyubovitskij) V. E. Valery Efimovich
Riassunto:	Title screen We shortly report on the two-photon decay width of the light s-meson interpreted as a quarkonium state. Results are given in dependence on the s-mass and the constituent mass of the light quark. The triangle quark-loop diagram, responsible for the two-photon transition, is carefully evaluated: a term in the transition amplitude, often omitted in literature, results in destructive interference with the leading term. As a result we show that the two-photon decay width of the s in the quarkonium picture is less than 1 keV for the physical range of parameters. Режим доступа: по договору с организацией-держателем ресурса
Pubblicazione:	2008
Soggetti:	электронный ресурс труды учёных ТПУ
Accesso online:	https://doi.org/10.1103/PhysRevD.77.034007
Natura:	Elettronico Capitolo di libro
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656915

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