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Model-independent analysis of the neutron-proton final-state interaction region in the pp -> pn pi^+ reaction

Yuri N. Uzikov·Colin Wilkin
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Abstract

Experimental data on the pp -> pn pi^+ reaction measured in an exclusive two-arm experiment at 800 MeV show a narrow peak arising from the strong proton-neutron final-state interaction. It was claimed, within the framework of a certain model, that this peak contained up to a 25% spin-singlet final state contribution. By comparing the data with those of pp -> d pi^+ in a largely model-independent way, it is here demonstrated that at all the angles measured the whole of the peak could be explained as being due to spin-triplet final states, with the spin-singlet being at most a few percent. Good qualitative agreement with the measured proton analysing power is also found within this approach.

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Yuri N. Uzikov, Colin Wilkin. 2001-04-04. Model-independent analysis of the neutron-proton final-state interaction region in the pp -> pn pi^+ reaction. https://doi.org/10.1016/s0370-2693(01)00633-5

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