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Complete set of precise deuteron analyzing powers at intermediate energies: Comparison with modern nuclear force predictions

Sekiguchi, K. ; Sakai, H. ; Witaa, H. ; et al.
Phys.Rev.C 65 (2002) 034003, 2002.
Inspire Record 583095 DOI 10.17182/hepdata.25427

Precise measurements of deuteron vector and tensor analyzing powers Ayd, Axx, Ayy, and Axz in d−p elastic scattering were performed via 1H(d→,d)p and 1H(d→,p)d reactions at three incoming deuteron energies of Edlab=140, 200, and 270 MeV. A wide range of center-of-mass angles from ≈10° to 180° was covered. The cross section was measured at 140 and 270 MeV at the same angles. These high precision data were compared with theoretical predictions based on exact solutions of three-nucleon Faddeev equations and modern nucleon-nucleon potentials combined with three-nucleon forces. Three-body interactions representing a wide range of present day models have been used: the Tucson-Melbourne 2π-exchange model, a modification thereof closer to chiral symmetry, the Urbana IX model, and a phenomenological spin-orbit ansatz. Large three-nucleon force effects are predicted, especially at the two higher energies. However, only some of them, predominantly dσ/dΩ and Ayd, are supported by the present data. For tensor analyzing powers the predicted effects are in drastic conflict to the data, indicating defects of the present day three-nucleon force models.

8 data tables
Table 1

Angular distribution for DEUT P elastic scattering at EKIN of 140 MeV with the SMART spectrograph.

Table 2

Angular distribution for DEUT P elastic scattering at EKIN of 270 MeV with the D-room polarimeter.

Table 3

Angular distribution for DEUT P elastic scattering at EKIN of 270 MeV with the SMART spectrograph.

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Measurement of polarization transfer kappa(0) and tensor analyzing power T(20) in the backward elastic d p scattering

Punjabi, V. ; Abegg, R. ; Belostotsky, S. ; et al.
Phys.Lett.B 350 (1995) 178-183, 1995.
Inspire Record 405206 DOI 10.17182/hepdata.28545

The polarization transfer κ 0 and the tensor analyzing power T 20 for the 1 H d p)d reaction have been measured up to an internal momentum of k = 0.58 GeV/c. Comparison of the same observables obtained in recent studies for 1 H d p)d reaction, as a function of k , show different behavior. However the data from these two reactions are almost identical when compared in T 20 versus κ 0 correlation plots. We discuss similarities and differences observed in the two reactions.

1 data table
Table 1

The authors use the Infinite Momentum Frame variable K= M( proton) * sqrt(1/(4*a*(1-a)) - 1), where a = (E(proton)+P_long(proton))/(E(deut)+P(deut)).