Improved dispersion relations for γ γ → π0 π0

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We perform a dispersive theoretical study of the reaction γ γ → π0 π0 emphasizing the low energy region. The large source of theoretical uncertainty to calculate the γ γ → π0 π0 total cross section for sqrt(s) ≳ 0.5 GeV within the dispersive approach is removed. This is accomplished by taking one...

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Detalles Bibliográficos
Autores principales:	Oller, J.A., Roca, L., Schat, C.
Formato:	Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	2008
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_03702693_v659_n1-2_p201_Oller
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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