Abstract
The direct reconstruction of the isospin I = 0 amplitudes is discussed under the assumption that the I = 1 amplitudes are known and that a sufficient number of independent np observables have been measured at a centre-of-mass angle θ. We show that at least one observable measured at angle π — θ is necessary in order to determine the I = 0 amplitudes, including the phase relative to the I = 1 amplitudes. Special cases at θ = 0, π/2 and π are also discussed.
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Ball, J., Binz, R., Bystricky, J. et al. Direct reconstruction of isosinglet amplitudes for nucleon-nucleon elastic scattering. Eur. Phys. J. C 5, 57–61 (1998). https://doi.org/10.1007/s100529800926
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DOI: https://doi.org/10.1007/s100529800926