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Improvements to the Method of Dispersion Relations for B Nonleptonic Decays
I. Caprini, L. Micu, C. Bourrely
We bring some clarifications and improvements to the method of dispersion relations in the external masses variables, that we proposed recently for investigating the final state in…
Dispersive and chiral symmetry constraints on the light meson form factors
Irinel Caprini
The form factors of the light pseudoscalar mesons are investigated in a dispersive formalism based on hadronic unitarity, analyticity and the OPE expansion of the QCD Green functio…
Dispersion Relations and Rescattering Effects in B Nonleptonic Decays
I. Caprini, L. Micu, C. Bourrely
Recently, the final state strong interactions in nonleptonic B decays were investigated in a formalism based on hadronic unitarity and dispersion relations in terms of the off-shel…
Borel summation and momentum-plane analyticity in perturbative QCD
Irinel Caprini, Matthias Neubert
We derive a compact expression for the Borel sum of a QCD amplitude in terms of the inverse Mellin transform of the corresponding Borel function. The result allows us to investigat…