Spin matrix elements for the elastic proton-proton and proton-antiproton collisions

Details Spin matrix elements for the elastic proton-proton and proton-antiproton collisions Spin matrix elements for the elastic proton-proton and proton-antiproton collisions

2007-01-26

arxiv.org/abs/hep-ph/0701226v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 2 pictures, XVIII International Baldin Seminar on High Energy Physics Problems "Relativistic Nuclear Physics and Quan

Scientific paper

Motivated by the present extensive RHIC (BNL) spin program and further PAX project at FAIR, we study the possibility of explicit reconstruction of full set of helicity amplitudes by joint consideration of elastic proton-proton and proton-antiproton scattering. Procedure is based on the derivative relations for the helicity amplitudes, explicit parametrization of the leading spin non-flip amplitudes and crossing - symmetry relations. Some preliminary results are presented for the PAX energies to show the expected magnitudes of the spin dependent observables as a functions of invariant Mandelstam's variables $s$ and $t$.

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