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Title: Quasi-free limit in the deuteron-deuteron three-body break-up process
Authors: Stephan, Elżbieta
Ramazani-Sharifabadi, Reza
Amir-Ahmadi, Hamid Reza
Eslami-Kalantari, Mohammad
Ciepał, Izabela
Bayat, M. T.
Kalantar-Nayestanaki, C.
Kistryn, St.
Kozela, A.
Mahjour-Shafiei, M.
Mardanpour, H.
Messchendorp, J. G.
Mohammadi-Dadkan, M.
Ramazani-Moghaddam-Arani, A.
Tavakoli-Zaniani, H.
Keywords: 2H(d, d p)n; BINA 4π-detection system; deuteron-deuteron three-body
Issue Date: 2020
Citation: "SciPost Physics Proceedings" (2020), iss. 3, art. no. 057, s. 1-8
Abstract: Detailed measurements of vector and tensor analyzing powers of the 2H(~d, dp)n breakup process are presented. The data were obtained using 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 -detection system. The focus of this contribution is to analyze data of the dd scattering process in the regime at which the neutron acts as a spectator, which we refer to as the quasi-free (QF) limit. To achieve this, events for which the final-state deuteron and proton are coplanar have been analyzed and the data have been sorted for various reconstructed momenta of the missing neutron. In the limit of vanishing neutron momentum and at small deuteron-proton momentum transfer, the data match very well with measured and predicted spin observables of the elastic deuteron-proton scattering process. The agreement deteriorates rapidly with increasing neutron momentum and deuteron-proton momentum transfer. The results of coplanar configurations in four-body phase space are compared with the results of recent available theoretical calculations based on the Single-Scattering Approximation.
DOI: 10.21468/SciPostPhysProc.3.057
ISSN: 2666-4003
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