Two-photon decay width of the sigma meson; Physical Review D; Vol. 77, iss. 3
| Parent link: | Physical Review D: covering particles, fields, gravitation, and cosmology.— , 1958- Vol. 77, iss. 3.— 2008.— [034007, 6 p.] |
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| Další autoři: | , , |
| Shrnutí: | 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 |
| Jazyk: | angličtina |
| Vydáno: |
2008
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| Témata: | |
| On-line přístup: | https://doi.org/10.1103/PhysRevD.77.034007 |
| Médium: | xMaterials Elektronický zdroj Kapitola |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656915 |
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| 200 | 1 | |a Two-photon decay width of the sigma meson |f A. Faessler, Th. Gutsche, V. E. Lyubovitskiy (Lyubovitskij) | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 27 tit.] | ||
| 330 | |a 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. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Physical Review D |o covering particles, fields, gravitation, and cosmology |d 1958- | ||
| 463 | |t Vol. 77, iss. 3 |v [034007, 6 p.] |d 2008 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 701 | 1 | |a Faessler |b A. | |
| 701 | 1 | |a Gutsche |b Th. | |
| 701 | 1 | |a Lyubovitskiy (Lyubovitskij) |b V. E. |c physicist |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences, Professor of the University of Tubingen (Germany) |f 1963- |g Valery Efimovich |3 (RuTPU)RU\TPU\pers\33385 |9 17080 | |
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