Partial Wave Analysis of Nucleon-Nucleon Scattering below pion production threshold

E. Ruiz Arriola; J. E. Amaro; R. Navarro Perez

arxiv: 1304.0895 · v2 · pith:KOVHN34Wnew · submitted 2013-04-03 · ⚛️ nucl-th

Partial Wave Analysis of Nucleon-Nucleon Scattering below pion production threshold

R. Navarro Perez , J. E. Amaro , E. Ruiz Arriola This is my paper

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keywords belowpionscatteringanalysisdataeffectsinteractionpartial

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We undertake a simultaneous partial wave analysis to proton-proton and neutron-proton scattering data below pion production threshold up to LAB energies of 350MeV. We represent the interaction as a sum of delta-shells in configuration space below 3fm and a charge dependent one pion exchange potential above 3fm together with electromagnetic effects. We obtain chi^2 = 2813|pp + 3985|np with a total of N = 2747|pp + 3691|np data obtained till 2013 and a total number of 46 fitting parameters yielding chi^2 /d.o.f = 1.06. Special attention is paid to estimate the errors of the phenomenological interaction as well as the derived effects on the phase-shifts and scattering amplitudes.

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