Abstract
It is shown on gauge invariance grounds that the new threshold phenomenon is discovered in the radiative decays {phi} {yields} {gamma}a{sub 0} {yields} {gamma}{pi}{sup 0}{eta} and {phi} {yields} {gamma}f{sub 0} {yields} {gamma}{pi}{sup 0}{pi}{sup 0}. This enables to conclude that production of the light scalar mesons a{sub 0}(980) and f{sub 0}(980) in these decays is caused by the four-quark transitions, resulting in strong restrictions on the large-N{sub c} expansions of the decay amplitudes. The analysis shows that these constraints give new evidence in favor of the four-quark nature of a{sub 0}(980) and f{sub 0}(980) mesons.
Achasov, N N
[1]
- Sobolev Inst. for Mathematics, Siberian Division, Russian Academy of Sciences, Novosibirsk (Russian Federation)
Citation Formats
Achasov, N N.
Radiative decays of {phi}-meson and nature of light scalar resonances.
Russian Federation: N. p.,
2004.
Web.
Achasov, N N.
Radiative decays of {phi}-meson and nature of light scalar resonances.
Russian Federation.
Achasov, N N.
2004.
"Radiative decays of {phi}-meson and nature of light scalar resonances."
Russian Federation.
@misc{etde_20617404,
title = {Radiative decays of {phi}-meson and nature of light scalar resonances}
author = {Achasov, N N}
abstractNote = {It is shown on gauge invariance grounds that the new threshold phenomenon is discovered in the radiative decays {phi} {yields} {gamma}a{sub 0} {yields} {gamma}{pi}{sup 0}{eta} and {phi} {yields} {gamma}f{sub 0} {yields} {gamma}{pi}{sup 0}{pi}{sup 0}. This enables to conclude that production of the light scalar mesons a{sub 0}(980) and f{sub 0}(980) in these decays is caused by the four-quark transitions, resulting in strong restrictions on the large-N{sub c} expansions of the decay amplitudes. The analysis shows that these constraints give new evidence in favor of the four-quark nature of a{sub 0}(980) and f{sub 0}(980) mesons.}
journal = []
issue = {8}
volume = {67}
journal type = {AC}
place = {Russian Federation}
year = {2004}
month = {Aug}
}
title = {Radiative decays of {phi}-meson and nature of light scalar resonances}
author = {Achasov, N N}
abstractNote = {It is shown on gauge invariance grounds that the new threshold phenomenon is discovered in the radiative decays {phi} {yields} {gamma}a{sub 0} {yields} {gamma}{pi}{sup 0}{eta} and {phi} {yields} {gamma}f{sub 0} {yields} {gamma}{pi}{sup 0}{pi}{sup 0}. This enables to conclude that production of the light scalar mesons a{sub 0}(980) and f{sub 0}(980) in these decays is caused by the four-quark transitions, resulting in strong restrictions on the large-N{sub c} expansions of the decay amplitudes. The analysis shows that these constraints give new evidence in favor of the four-quark nature of a{sub 0}(980) and f{sub 0}(980) mesons.}
journal = []
issue = {8}
volume = {67}
journal type = {AC}
place = {Russian Federation}
year = {2004}
month = {Aug}
}