TY - JOUR
T1 - A comprehensive study of analyzing powers in the proton-deuteron break-up channel at 135 MeV
AU - Bayat, M. T.
AU - Tavakoli-Zaniani, H.
AU - Amir-Ahmadi, H. R.
AU - Deltuva, A.
AU - Eslami-Kalantari, M.
AU - Golak, J.
AU - Kalantar-Nayestanaki, N.
AU - Kistryn, St
AU - Kozela, A.
AU - Mardanpour, H.
AU - Messchendorp, J. G.
AU - Mohammadi-Dadkan, M.
AU - Ramazani-Moghaddam-Arani, A.
AU - Ramazani-Sharifabadi, R.
AU - Skibinski, R.
AU - Stephan, E.
AU - Witala, H.
N1 - Funding Information:
The authors acknowledge the work by AGOR cyclotron and ion-source groups at KVI for delivering the high-quality polarized beam. This work was partly supported by the Polish National Science Centre under Grant Nos. 2012/05/B/ST2/02556 and 2016/22/M/ST2/00173. The numerical calculations were partially performed on the supercomputer cluster of the JSC, Jülich, Germany.
Publisher Copyright:
© 2020, The Author(s).
PY - 2020/10/1
Y1 - 2020/10/1
N2 - A measurement of the analyzing powers for the H-2((p) over bar ,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 4 pi 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.
AB - A measurement of the analyzing powers for the H-2((p) over bar ,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 4 pi 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.
KW - NUCLEAR-FORCE
KW - 3-NUCLEON
KW - 3-BODY
KW - CONTINUUM
U2 - 10.1140/epja/s10050-020-00255-0
DO - 10.1140/epja/s10050-020-00255-0
M3 - Article
SN - 1434-6001
VL - 56
JO - European Physical Journal A
JF - European Physical Journal A
IS - 10
M1 - 249
ER -