Two-photon decay width of the sigma meson
| Parent link: | Physical Review D: covering particles, fields, gravitation, and cosmology.— , 1958- Vol. 77, iss. 3.— 2008.— [034007, 6 p.] |
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| Diğer Yazarlar: | , , |
| Özet: | 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 |
| Baskı/Yayın Bilgisi: |
2008
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| Konular: | |
| Online Erişim: | https://doi.org/10.1103/PhysRevD.77.034007 |
| Materyal Türü: | Elektronik Kitap Bölümü |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656915 |
| Özet: | 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 |
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| DOI: | 10.1103/PhysRevD.77.034007 |