[en] In the case of elastic high-energy hadron-hadron scattering, the impact of the large-distance contributions on the behaviour of the slopes of the spin-non-flip and of the spin-flip amplitudes is analysed. It is shown that the long tail of the hadronic potential in impact parameter space leads to a value of the slope of the reduced spin-flip amplitude larger than that of the spin-non-flip amplitude. This effect is taken into account in the calculation of the analysing power in proton-nucleus reactions at high energies. It is shown that the preliminary measurement of A(N) (for p 12C obtained by the E950 Collaboration indeed favours a spin-flip amplitude with a large slope. Predictions for A)(N) (at P)(L) = 250 GeV/c are given.
Disciplines :
Physics
Author, co-author :
Cudell, Jean-René ; Université de Liège - ULiège > Département d'astrophys.
Predazzi, E.
Selyugin, Oleg Viktorovich
Language :
English
Title :
High-energy hadron spin-flip amplitude at small momentum transfer and new A(N) data from RHIC
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