Nucleon-nucleon scattering at small angles, measured at COSY

Author: Zara Bagdasarian
Keywords: Nucleon-nucleon scattering, analysing power, cross-section
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The most accepted approach to describe nucleon-nucleon (NN) interaction is the partial wave analysis (PWA), which translates various experimental observables to the common language of the partial waves. The reliable analysis relies not only on the quality experimental data, but also on the measurements of scattering observables over preferably the full angular range. Small angle scattering has been measured for six beam energies between 0.8 and 2.4 GeV using polarized proton beam incident on both proton and deuteron unpolarized targets at COSY-ANKE. While pp data closed a very important gap at small scattering angles in the database, pn-data is a major stepstone in the completely non-explored area.

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