Spin amplitudes of pN elastic scattering contain fundamental information on the dynamics of the NN-interaction and so far can not be derived from theory. Experimental data from systematic study of spin amplitudes of pp- and pn-scattering are collected in the SAID partial-wave analysis at kinetic energies below 3 GeV and 1 GeV, respectively. At higher energies experimental data on spin amplitudes are incomplete for pp- and very scarce for pn-scattering, therefore, phenomenological models and corresponding parametrizations of pN amplitudes are used in analysis. Spin observables A_y, A_yy of the dd→ n+p+d reaction in the kinematic of the quasi-free pd-collision are related to the corresponding spin observables of the elastic pd-scattering and can be calculated on the basis of the spin-dependent Glauber theory [1,2] involving existing models of the pN spin amplitudes [3,4]. A comparison of results of such calculations with expected data on pd-scattering will provide an effective test of the available phenomenological pN amplitudes [5].
[1] M.N. Platonova, V.I. Kukulin,
Refined Glauber model versus Faddeev calculations and experimental data for pd spin observables
Phys.Rev.C 81 (2010) 014004, Phys.Rev.C 94 (2016) 6, 069902; (erratum) e-Print: 1612.08694 [nucl-th]
[2] M.N. Platonova, V.I. Kukulin,
Theoretical study of spin observables in pd elastic scattering at energies Tp = 800-1000 MeV
Eur.Phys.J.A 56 (2020) 5, 132; e-Print: 1910.05722 [nucl-th]
[3] A. Sibirtsev, J. Haidenbauer, S. Krewald, U.-G.Meissner, Proton-proton scattering above 3 GeV/c Eur.Phys.J.A 45 (2010) 357-372 e-Print: 0911.4637 [hep-ph]
[4] O.V. Selyugin, Elastic scattering at sqrt{s}=6 GeV up to sqrt{s}=13TeV: Proton-proton; proton-antiproton, and proton-neutron
Phys.Rev.D 110 (2024) 11, 114028 ; e-Print: 2407.01311 [hep-ph].
[5] Yu. Uzikov, J. Haidenbauer, A. Bazarova, A. Temerbaev,
Spin Observables of Proton–Deuteron Elastic Scattering at SPD NICA Energies within the Glauber Model and pN Amplitudes - Phys.Part.Nucl. 53 (2022) 2, 419-425, e-Print: 2011.04304 [nucl-th]