Polarization effects in inelastic deuteron scattering in the region of baryon-resonance excitation

Tensor A yy and vector A y analyzing powers in the 1H(d, d′)X and 12C(d, d′)X reactions at initial deuteron momenta of 9 GeV/c in the region of baryonic resonance excitation

“…The measurements of the tensor and vector analyzing powers A yy and A y at 9 GeV/c and 85 mrad of the secondary deuterons emission angle in the vicinity of the undetected system mass of M X ∼ 2.2 GeV/c 2 [3] have shown large values. The obtained results are in satisfactorily agreement with the plane wave impulse approximation (PWIA) calculations [12]. It was pointed out that the spin-dependent part of the N N → N N * (∼ 2.2 GeV/c 2 ) amplitude is significant.…”

“…The results on the tensor A yy and vector A y obtained at 9 GeV/c and 85 mrad [4] and at 5 GeV/c and 178 mrad [5] have been satisfactorily explained in the framework of the PWIA approach [12] (see diagram in Fig. 5a).…”

Investigation of reactions using polarized and unpolarized deuteron beam at Nuclotron: current status and perspectives

“…For these experiments the full size RPC wall is required. In parallel, the measurement of the dp-elastic scattering [23,51], dd → 3 Hen [52][53][54] and dA → 3 HeX [55] processes can be performed. The spin studies with BM@N require also the advanced deuteron beam polarimetry at Nuclotron discussed in [56,57].…”

“…The separation of the primary deuteron and secondary beams at focus point F6 is provided by the modernized analyzing magnet SP-41 [35]. The physics at F6 is related with the baryonic resonances spin properties studies at the energies between 2 and 6 GeV of the deuteron kinetic energy and includes the measurements of the tensor A yy and vector A y analyzing powers in quasi-elastic and inelastic A(d, pp)X reaction; of the tensor A yy and vector A y analyzing powers in the inelastic deuteron scattering A(d, d )X [47] and A(d, d )π ± X reactions; investigation of the vector analyzing power in neutron induced reactions (with the proton spectator detection) like np → pn, np → ppπ − , np → npπ + π − [49,50] etc. For these experiments the full size RPC wall is required.…”

“…It can be varied from the beginning to the middle of the pole of the 3SP40 magnet. This configuration can be used for the measurements of the tensor A yy and vector A y analyzing powers (and, possibly, vector polarization transfer coefficient C y y ) in inclusive deuteron breakup, A(d, p)X, at large transverse proton momenta [15] at the highest available energy at Nuclotron; of the tensor A yy and vector A y analyzing powers [44][45][46] (and, possibly, vector polarization transfer coefficient C y y [47]) in the inelastic deuteron scattering, A(d, d )X, in the vicinity of the baryonic resonances excitation; of the tensor A yy and vector A y analyzing powers in the inclusive pion production, A(d, π − )X, [48] also at the highest available energy at Nuclotron. The measurements of the analyzing powers in inclusive deuteron breakup and the inelastic deuteron scattering in the vicinity of the baryonic resonances excitation can be performed simultaneously.…”