|Title:||A comprehensive study of analyzing powers in the proton–deuteron break-up channel at 135 MeV|
|Authors:||Bayat, M. T.|
Amir-Ahmadi, H. R.
Messchendorp, J. G.
|Keywords:||polarization data; theoretical predictions; proton-deuteron break-up|
|Citation:||"The European Physical Journal A", Vol. 56, iss. 10, 2020, art. no. 249, s. 1-13|
|Abstract:||A measurement of the analyzing powers for the 2H(p⃗ ,pp)n break-up reaction was carried out at KVI exploiting a polarized-proton beam at an energy of 135MeV. The scattering angles and energies of the final-state protons were measured using the Big Instrument for Nuclear-polarization Analysis (BINA) with a nearly 4π geometrical acceptance. In this work, we analyzed a large number of kinematical geometries including forward–forward configurations in which both the final-state particles scatter to small polar angles and backward–forward configurations in which one of the final-state particles scatters to large polar angles. The results are compared with Faddeev calculations based on modern nucleon–nucleon (NN) and three-nucleon (3N) potentials. Discrepancies between polarization data and theoretical predictions are observed for configurations corresponding to small relative azimuthal angles between the two final-state protons. These configurations show a large sensitivity to 3N force effects.|
|Appears in Collections:||Artykuły (WNP)|
|Stephan_A_Comprehensive_Study.pdf||1,65 MB||Adobe PDF||View/Open|
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