R. Hausammann

p(↑)+p(↑) → π+d at 515 and 578 MeV

Abstract The polarization asymmetries A 0 y and A y 0 , and the spin correlation parameter A yy have been measured at SIN at 515 and 578 MeV using a transversally polarized proton beam and target. The results are compared with various theoretical models.

Measurement of the spin correlation parameter A00nn and the polarization A00n0 in elastic p-p scattering between 400 and 600 MeV

Abstract We have measured the spin correlation parameter A 00 nn and the polarization A 00 n 0 for p-p elastic scattering in the c.m. angular range between 30° and 90° at seven energies between 400 and 600 MeV. The experiment was performed at SIN using a polarized beam and target and a fast on-line event reconstruction method. The results are compared with phase-shift predictions.

Study of the reaction pp → π+d with a polarized beam and target☆

Abstract We have measured at the SIN-ring cyclotron the spin dependent parameters A yo A oy , A yy , A xx , A zz and A zx for the pp → π + d reaction, at 578 and 515 MeV. The 578 MeV data are presented.

Spin correlations and analyzing powers in pp → π+d between 447 and 578 MeV

Abstract The analyzing power A n 0( θ ) and the spin correlation parameters A nn ( θ ), A ss ( θ ), A kk ( θ ), A sk ( θ ) have been measured in the reaction pp → π + d over a large angular range at 447, 496, 515, 538 and 578 MeV. The experiments were performed at SIN, using a polarized proton beam and a polarized proton target. The measured angular distributions have been fitted to phenomenological partial wave expansions in terms of Legendre polynomials and associated functions. Results have been compared with several calculations based on different theoretical models. At the lower energies, the agreement is reasonably good; however, none of the theories is able to explain all the results in a satisfactory way.

Measurements of the spin-correlation parametersA00kk,A00ks, andA00ssinp−pelastic scattering between 400 and 600 MeV

We have measured the spin-correlation parameters A/sub 00k/k, A/sub 00k/s, and A/sub 00s/s in p-p scattering between 400 and 600 MeV using a longitudinally polarized beam and a butanol target polarized in the horizontal plane. Owing to the restrictive geometrical acceptance of the target, the polarization axis of the target was oriented at an angle ..cap alpha.. with respect to beam direction. The parameters A/sub 00k/k and A/sub 00k/s were therefore measured as a linear combination at 577, 536, 514, 494, and 445 MeV. These experiments were extended to the measurement of A/sub 00k/s and A/sub 00s/s by using a transversely polarized beam. We present the results, which are compared with phase-shift predictions.

Measurements of the polarization A and the spin‐correlation Ann

The experiment was performed at SIN using a polarized proton beam with ‖p↘B‖= (41.65±0.43) % and a polarized butanol target. Beam polarization was produced by scattering the main 590 MeV unpolarized beam from a thin Be target and selecting the elastically scattered portion at 8°.

p↑p↑ scattering at sin

Using the PM1 polarized proton beam at SIN and a polarized target, the elastic p↑p↑ scattering as well as the inelastic channel p↑p↑→π+d have been studied between 400 and 600 MeV. For the elastic reaction, a sufficient number of spin dependent parameters has been measured in order to do a direct reconstruction of the scattering matrix between 38° cm and 90°cm.

Measurements of the spin-correlation parameters A/sub 00k/k, A/sub 00k/s, and A/sub 00s/s in p-p elastic scattering between 400 and 600 MeV

We have measured the spin-correlation parameters A/sub 00k/k, A/sub 00k/s, and A/sub 00s/s in p-p scattering between 400 and 600 MeV using a longitudinally polarized beam and a butanol target polarized in the horizontal plane. Owing to the restrictive geometrical acceptance of the target, the polarization axis of the target was oriented at an angle ..cap alpha.. with respect to beam direction. The parameters A/sub 00k/k and A/sub 00k/s were therefore measured as a linear combination at 577, 536, 514, 494, and 445 MeV. These experiments were extended to the measurement of A/sub 00k/s and A/sub 00s/s by using a transversely polarized beam. We present the results, which are compared with phase-shift predictions.

Measurement of the Polarization Parameters P, Knoon, Ds’oso, Ds’oko, Ms’osn, Ms’okn IN pp Elastic Scattering at 579 MeV

A complete determination of the 5 amplitudes in p-p elastic scattering (complete experiment) requires the knowledge of several 2 or 3-spin parameters (ref.1, 2). We present here preliminary results on parameters involving the final polarization of the scattered particle.

Measurement of the Spin Correlation Parameters a(00kk), a(00ks) and a(00ss) in the p p Elastic Scattering Between 400-MeV and 600-MeV

We have measured the spin-correlation parameters A/sub 00k/k, A/sub 00k/s, and A/sub 00s/s in p-p scattering between 400 and 600 MeV using a longitudinally polarized beam and a butanol target polarized in the horizontal plane. Owing to the restrictive geometrical acceptance of the target, the polarization axis of the target was oriented at an angle ..cap alpha.. with respect to beam direction. The parameters A/sub 00k/k and A/sub 00k/s were therefore measured as a linear combination at 577, 536, 514, 494, and 445 MeV. These experiments were extended to the measurement of A/sub 00k/s and A/sub 00s/s by using a transversely polarized beam. We present the results, which are compared with phase-shift predictions.