New analytic unitarization schemes

Details New analytic unitarization schemes New analytic unitarization schemes

2008-12-03

arxiv.org/abs/0812.0735v2

Phys.Rev.D79:034033,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 10 figures, corrected typos, 1 fig. redrow

Scientific paper

10.1103/PhysRevD.79.034033

We consider two well-known classes of unitarization of Born amplitudes of hadron elastic scattering. The standard class, which saturates at the black disk limit includes the standard eikonal representation, while the other class, which goes beyond the black-disk limit to reach the full unitarity circle, includes the U matrix. It is shown that the basic properties of these schemes are independent of the functional form used for the unitarisation, and that U matrix and eikonal schemes can be extended to have similar properties. A common form of unitarisation is proposed interpolating between both classes. The correspondence with different nonlinear equations are also briefly examined.

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