25th European Conference on Few-Body Problems in Physics

Study of Three-Nucleon Dynamics in the dp breakup collisions using the WASA detector at COSY-Juelich

31 Jul 2023, 16:00

15m

Atrium Maximum (Alte Mensa)

Contributed Talk Monday Parallel Session: Few-body systems (Atrium Maximum)

Speaker

Ms Barbara Klos (University of Silesia)

Description

An experiment to investigate the ${}^1$H$(d,pp)n$ breakup reaction using a deuteron beam of 300, 340, 380 and 400 MeV (150, 170, 190, 200 MeV/nucleon) and the WASA (Wide Angle Shower Apparatus) detector, has been performed at the Cooler Synchrotron COSY-Juelich. Due to almost $4\pi$ acceptance and moderate detection threshold of the WASA system, differential cross section data have been collected in a large part of the breakup reaction phase space. The set of proton-proton coincidences registered at Forward Detector at the beam energy of 170 MeV/nucleon has been analysed on dense grid of kinematic variables, giving in total around 5600 data points. The cross section data are compared to theoretical predictions based on the state-of-the-art nucleon-nucleon potentials, combined with three-nucleon force, Coulomb interaction or carried out in a relativistic regime. Quantitative analysis of the description of the cross section data provided by various theoretical calculations in terms of ${\chi }^2$-like variables will be discussed. In addition, first results for the differential cross sections for selected kinematical configurations defined
by the polar angles ${\theta }_1$ and ${\theta }_2$ and the relative azimuthal angle ${\varphi }_{12}$ for the deuteron breakup at 190 MeV/nucleon will be presented.

Presentation materials

Mainz_2023_BK.pdf