https://doi.org/10.1140/epja/s10050-021-00358-2
Regular Article – Experimental Physics
A comprehensive analysis of differential cross sections and analyzing powers in the proton–deuteron break-up channel at 135 MeV
1
KVI-CART, University of Groningen, Groningen, The Netherlands
2
Department of Physics, School of Science, Yazd University, Yazd, Iran
3
Institute of Theoretical Physics and Astronomy, Vilnius University, Vilnius, Lithuania
4
M.Smoluchowski Institute of Physics, Jagiellonian University, Kraków, Poland
5
Institute of Physics, Jagiellonian University, Kraków, Poland
6
Institute of Nuclear Physics, PAS, Kraków, Poland
7
Department of Physics, University of Sistan and Baluchestan, Zahedan, Iran
8
Department of Physics, Faculty of Science, University of Kashan, Kashan, Iran
9
Department of Physics, University of Tehran, Tehran, Iran
10
Institute of Physics, University of Silesia, Chorzow, Poland
Received:
31
August
2020
Accepted:
12
January
2021
Published online:
11
February
2021
A selection of measured cross sections and vector analyzing powers, 
and 
, are presented for the 
break-up reaction. The data are taken with a polarized proton beam with a kinetic energy of 135 MeV using the Big Instrument for Nuclear-polarization Analysis (BINA) at KVI, the Netherlands. With this setup, is extracted for the first time for a large range of energies as well as polar and azimuthal angles of the two outgoing protons. For most of the configurations, the results at small and large relative azimuthal angles differ in behavior when comparing experimental data with the theoretical calculations. We also performed a more global comparison of our data with theoretical calculations. The cross-section results show huge values of 
/d.o.f.. The absolute values of /d.o.f. for the components of vector analyzing powers, and , are smaller than the ones for the cross section, partly due to larger uncertainties for these observables. However, also for these observables no satisfactory agreement is found for all angular combinations. This implies that the present models of a three-nucleon force are not able to provide a satisfactory description of experimental data.
© The Author(s) 2021
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