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hep-ph2003
Roy's equations and the pion-pion experimental data
R. Kaminski, L. Lesniak, B. Loiseau
Roy's equations are used to check if the scalar-isoscalar pion-pion scattering amplitudes fitted to experimental data fulfill crossing symmetry conditions. It is shown that the amp…
hep-ph2003
A phenomenological negatively charged pion-proton scattering length from pionic hydrogen
T. E. O. Ericson, B. Loiseau, S. Wycech
We derive a closed, model independent, expression for the electromagnetic correction factor to a phenomenological hadronic scattering length extracted from a hydrogenic atom. It is…
nucl-th2003
Annihilation range and final-state interaction in the antiproton-proton annihilation into pi-pi+
Bruno El-Bennich, W. M Kloet, B. Loiseau
The large set of accurate data on differential cross section and analyzing power from the CERN LEAR experiment on in the range from 360 to 1550 MeV/c is well r…