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
Autores principales:	Oller, J.A., Roca, L., Schat, C., Luso-American Foundation for Development (FLAD); Calouste Gulbenkian Foundation (FCG); Foundation for Science and Technology (FCT); Center of Physics of the Fundamental Interactions (CFIF); Center of Theoretical Particle Physics (CFTP)
Formato:	JOUR
Materias:	meson-meson scattering scalar resonances two photons
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_0094243X_v1030_n_p147_Oller
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_0094243X_v1030_n_p147_Oller
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spelling	todo:paper_0094243X_v1030_n_p147_Oller2023-10-03T14:55:55Z Sa-wave γγ→ππ and f0 (980)→ππ Oller, J.A. Roca, L. Schat, C. Luso-American Foundation for Development (FLAD); Calouste Gulbenkian Foundation (FCG); Foundation for Science and Technology (FCT); Center of Physics of the Fundamental Interactions (CFIF); Center of Theoretical Particle Physics (CFTP) 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Oller, J.A. Roca, L. Schat, C. Luso-American Foundation for Development (FLAD); Calouste Gulbenkian Foundation (FCG); Foundation for Science and Technology (FCT); Center of Physics of the Fundamental Interactions (CFIF); Center of Theoretical Particle Physics (CFTP) 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.
format	JOUR
author	Oller, J.A. Roca, L. Schat, C. Luso-American Foundation for Development (FLAD); Calouste Gulbenkian Foundation (FCG); Foundation for Science and Technology (FCT); Center of Physics of the Fundamental Interactions (CFIF); Center of Theoretical Particle Physics (CFTP)
author_facet	Oller, J.A. Roca, L. Schat, C. Luso-American Foundation for Development (FLAD); Calouste Gulbenkian Foundation (FCG); Foundation for Science and Technology (FCT); Center of Physics of the Fundamental Interactions (CFIF); Center of Theoretical Particle Physics (CFTP)
author_sort	Oller, J.A.
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
url	http://hdl.handle.net/20.500.12110/paper_0094243X_v1030_n_p147_Oller
work_keys_str_mv	AT ollerja sawavengppandf0980pp AT rocal sawavengppandf0980pp AT schatc sawavengppandf0980pp AT lusoamericanfoundationfordevelopmentfladcaloustegulbenkianfoundationfcgfoundationforscienceandtechnologyfctcenterofphysicsofthefundamentalinteractionscfifcenteroftheoreticalparticlephysicscftp sawavengppandf0980pp
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Sa-wave γγ→ππ and f0 (980)→ππ

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