Abstract.
A double scattering experiment, performed at the Paul-Scherrer-Institut (PSI), has measured a large variety of spin observables for free np elastic scattering from 260 to 535 MeV in the c.m. angle range from 60° to 164°. Results are presented for the depolarization parameters \(D_{onon}, D_{os''os} and \(D_{os''ok}\), the polarization transfer parameters \(K_{onno}, K_{os''so}\) and \(K_{os''ko}\), and the 3-index parameters \(N_{onkk}, N_{os''kn}, N_{os''sn}\) and \(N_{os'ʼns}\). The last four parameters have been measured for the first time in this energy range. These measurements considerably improve the data base available for neutron-proton scattering and will allow a direct reconstruction of the I = 0 scattering matrix, providing complete information about the nucleon-nucleon interaction in a model-independent way.
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Received: 24 May 2000 / Published online: 31 August 2000
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Arnold, J., van den Brandt, B., Daum, M. et al. Measurement of spin observables in neutron-proton elastic scattering . Eur. Phys. J. C 17, 83–95 (2000). https://doi.org/10.1007/s100520000465
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DOI: https://doi.org/10.1007/s100520000465