We discuss some formal and fundamental aspects related with the replacement of integral dispersion relations by derivative forms, and their practical uses in high energy elastic hadron scattering, in… (More)

It is shown that, for a wide class of functions with physical interest as forward scattering amplitudes , integral dispersion relations can be replaced by derivative forms without any high-energy… (More)

By means of improved empirical fits to the differential cross section data on pp elastic scattering at 19.4 ≤ √s ≤ 62.5 GeV and making use of a semi-analytical method, we determine the eikonal in the… (More)

We demonstrate that integral dispersion relations for hadron-hadron scattering amplitudes can be replaced by differential relations, without the usual high-energy approximation. We obtain analytical… (More)

Based on the behavior of the elastic scattering data, we introduce an almost model-independent parametrization for the imaginary part of the scattering amplitude, with the energy and momentum… (More)

We demonstrate that, for a class of functions with physical interest as forward scattering amplitudes, integral dispersion relations can be replaced by derivative forms without any high-energy… (More)

BACKGROUND
Obtaining informed consent for clinical trials is especially challenging when working in rural, resource-limited areas, where there are often high levels of illiteracy and lack of… (More)