Investigation of the quasi-free domain in deuteron-deuteron break-up using spin observables

Abstract

Precision measurements of vector and tensor analyzing powers of the ${}^2\mathrm{H}(\vec{d},dp)n$ break-up process for configurations in the vicinity of the quasi-free scattering regime with the neutron as spectator, are presented. These measurements are performed with a polarized deuteron-beam with an energy of 65 MeV/nucleon impinging on a liquid-deuterium target. The experiment was conducted at the AGOR facility at KVI using the BINA 4$\pi$-detection system. Events for which the final-state deuteron and proton are coplanar have been analyzed and the data have been sorted for various momenta of the missing neutron. In the limit of vanishing neutron momentum and at large deuteron-proton momentum transfer, the data agree well with the measured and theoretically predicted spin observables of the elastic deuteron-proton scattering process. The agreement deteriorates rapidly with increasing neutron momentum and/or decreasing momentum transfer from the deuteron beam to the outgoing proton. This study reveals the presence of a significant contribution of final-state interactions even at very small neutron momenta.

arXiv comment6 pages, 5 figures, accepted by EPJA

References in corpus (12)

• Nuclear forces from chiral Lagrangians using the method of unitary transformation II: The two-nucleon system
• Reworking the Tucson-Melbourne Three-Nucleon Potential
• Signatures of three-nucleon interactions in few-nucleon systems
• Resonance saturation for four-nucleon operators
• Analyzing Powers and Spin Correlation Coefficients for p+d Elastic Scattering at 135 and 200 MeV
• The Ay Problem for p-3He Elastic Scattering
• New calculation schemes for proton-deuteron scattering including the Coulomb interaction
• Proton-${}^3$He elastic scattering at low energies
• A versatile method for simulating pp -> ppe+e- and dp -> pne+e-p_spec reactions
• Spin-isospin selectivity in three-nucleon forces
• Three-body break-up in deuteron-deuteron scattering at 65~MeV/nucleon
• Investigation of the Cross Section for dd Elastic Scattering and dd$\to$ n${}^3$He Reactions at 160 MeV

Cited by in corpus (1)

• Precision measurements of differential cross sections and analyzing powers in elastic deuteron-deuteron scattering at 65 MeV/nucleon