Two-photon decay width of the sigma meson; Physical Review D; Vol. 77, iss. 3

Two-photon decay width of the sigma meson; Physical Review D; Vol. 77, iss. 3

Bibliografiske detaljer
Parent link:Physical Review D: covering particles, fields, gravitation, and cosmology.— , 1958-
Vol. 77, iss. 3.— 2008.— [034007, 6 p.]
Andre forfattere: Faessler A., Gutsche Th., Lyubovitskiy (Lyubovitskij) V. E. Valery Efimovich
Summary: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
Sprog:engelsk
Udgivet: 2008
Fag:
электронный ресурс
труды учёных ТПУ
Online adgang:https://doi.org/10.1103/PhysRevD.77.034007
Format: Electronisk Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656915

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