Sa-wave γγ→ππ and f0 (980)→ππ

We report on a dispersion relation for the γγ→(ππ)I Sa-wave in isospin I emphasizing the low energy region. The f0(980) signal that emerges in γγ→ππ is also discussed. Our results could be used to distinguish between different ππ isoscalar Sa-wave parameterizations. We also calculate the width of th...

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Detalles Bibliográficos
Publicado: 2008
Materias:
meson-meson scattering
scalar resonances
two photons
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v1030_n_p147_Oller
http://hdl.handle.net/20.500.12110/paper_0094243X_v1030_n_p147_Oller
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0094243X_v1030_n_p147_Oller
record_format dspace
spelling paper:paper_0094243X_v1030_n_p147_Oller2023-06-08T15:09:03Z Sa-wave γγ→ππ and f0 (980)→ππ meson-meson scattering scalar resonances two photons We report on a dispersion relation for the γγ→(ππ)I Sa-wave in isospin I emphasizing the low energy region. The f0(980) signal that emerges in γγ→ππ is also discussed. Our results could be used to distinguish between different ππ isoscalar Sa-wave parameterizations. We also calculate the width of the σ resonance to γγ and obtain the value Γ(σ→γγ) = (1.68±0.15)KeV. Finally, we elaborate on the size of the f0(980) coupling to ππ and show that its smallness compared to the KKÌ" one is not related to the OZI rule. © 2008 American Institute of Physics. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v1030_n_p147_Oller http://hdl.handle.net/20.500.12110/paper_0094243X_v1030_n_p147_Oller
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic meson-meson scattering
scalar resonances
two photons
spellingShingle meson-meson scattering
scalar resonances
two photons
Sa-wave γγ→ππ and f0 (980)→ππ
topic_facet meson-meson scattering
scalar resonances
two photons
description We report on a dispersion relation for the γγ→(ππ)I Sa-wave in isospin I emphasizing the low energy region. The f0(980) signal that emerges in γγ→ππ is also discussed. Our results could be used to distinguish between different ππ isoscalar Sa-wave parameterizations. We also calculate the width of the σ resonance to γγ and obtain the value Γ(σ→γγ) = (1.68±0.15)KeV. Finally, we elaborate on the size of the f0(980) coupling to ππ and show that its smallness compared to the KKÌ" one is not related to the OZI rule. © 2008 American Institute of Physics.
title Sa-wave γγ→ππ and f0 (980)→ππ
title_short Sa-wave γγ→ππ and f0 (980)→ππ
title_full Sa-wave γγ→ππ and f0 (980)→ππ
title_fullStr Sa-wave γγ→ππ and f0 (980)→ππ
title_full_unstemmed Sa-wave γγ→ππ and f0 (980)→ππ
title_sort sa-wave γγ→ππ and f0 (980)→ππ
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v1030_n_p147_Oller
http://hdl.handle.net/20.500.12110/paper_0094243X_v1030_n_p147_Oller
_version_ 1768542544529981440

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