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Measurements of polarized-neutron-polarized-proton scattering: Implications for the triton binding energy

Wilburn, W.S. ; Gould, C.R. ; Haase, D.G. ; et al.
Phys.Rev.Lett. 71 (1993) 1982-1985, 1993.
Inspire Record 370854 DOI 10.17182/hepdata.19731

Measurements have been made of ΔσT for polarized neutrons incident on a polarized-proton target from 3.65 to 11.60 MeV. In the energy range near 10 MeV, ΔσT is very sensitive to the nucleon-nucleon tensor interaction. Comparison of the data to potential-model predictions indicate that the tensor interaction is weak, resulting in values of the 3S1−3D1 mixing parameter ε1 which are smaller than predicted by any nucleon-nucleon potential model. A smaller tensor force will bring the predictions of local potential models for the triton binding energy into closer agreement with the experimental value.

1 data table
Table 1

The measured cross section is the total cross section with the spins antiparallel minus the total cross section with the spins parallel.


Measurement of n p and n d total cross-sections from 0.7-GeV/c to 3.6-GeV/c

Devlin, T.J. ; Johnson, W. ; Norem, J. ; et al.
Phys.Rev.D 8 (1973) 136-155, 1973.
Inspire Record 81663 DOI 10.17182/hepdata.22079

We present direct measurements of the total cross section for neutrons on protons and deuterons in the momentum range 0.7 to 3.6 GeVc. Using these and other nucleon-nucleon total cross sections, we evaluate total cross sections in the pure isospin states.

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

COMPUTED USING SIG(I=0) = 2*SIG(NP) - SIG(PP) FROM SIG(NP) AND INTERPOLATED PREVIOUSLY MEASURED PROTON-PROTON CROSS SECTIONS.

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