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The Influence of Strong Interaction on the Pionium Wave Functions at Small Distances

The influence of strong $\pi^+\pi^-$ interaction of the behaviour of pionium nS-state wave functions at small distance are investigated both analytically (perturbatively) and so numerically. It is shown that in the whole the accounting of strong interaction results in multiplying of pure Coulomb pio...

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Detalles Bibliográficos
Autores principales: Amirkhanov, I V, Puzynin, I V, Tarasov, A, Voskresenskaya, O O, Zeinalova, O V
Lenguaje:eng
Publicado: 1999
Materias:
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)00256-7
http://cds.cern.ch/record/367219
Descripción
Sumario:The influence of strong $\pi^+\pi^-$ interaction of the behaviour of pionium nS-state wave functions at small distance are investigated both analytically (perturbatively) and so numerically. It is shown that in the whole the accounting of strong interaction results in multiplying of pure Coulomb pionium wave functions by some function practically independent on value of principal quantum number n. Due to this reason the n-independence of probability of Coulomb $\pi^+\pi^-$ interaction