Spin observables of the reactions NN -> DeltaN and pd -> Delta (pp)(1S0) in collinear kinematics

A general formalism for double and triple spin-correlations of the reaction NN -> DeltaN is developed for the case of collinear kinematics. A complete polarization experiment allowing to reconstruct all of the four amplitudes describing this process is suggested. Furthermore, the spin observables of the inelastic charge-exchange reaction pd -> Delta^0(pp)(1S0) are analyzed in collinear kinematics within the single pN scattering mechanism involving the subprocess pn -> Delta^0p. The full set of spin observables related to the polarization of one or two initial particles and one final particle is obtained in terms of three invariant amplitudes of the reaction pd -> Delta (pp)(1S0) and the transition form factor d->(pp)(1S0). A complete polarization experiment for the reaction pd -> Delta^0(pp)(1S0) is suggested which allows one to determine three independent combinations of the four amplitudes of the elementary subprocess NN -> DeltaN.Comment: 12 pages, 1 figur

Quark-model study of few-baryon systems

We review the application of non-relativistic constituent quark models to study one, two and three non-strange baryon systems. We present results for the baryon spectra, potentials and observables of the NN, N$\Delta$, $\Delta\Delta$ and NN$^*(1440)$ systems, and also for the binding energies of three non-strange baryon systems. We make emphasis on observable effects related to quark antisymmetry and its interplay with quark dynamics.Comment: 82 pages, 36 figures, 18 tables. Accepted for publication in Reports on Progress in Physic

Measurement of antiproton-proton small-angle elastic scattering at low momentum

20nonenoneL. Linssen;C.I. Beard;R. Birsa;K. Bos;F. Bradamante;D.V. Bugg;A.S. Clough;S.Dalla Torre-Colautti;M. Giorgi;J.R. Hall;J.C. Kluyver;R.A. Kunne;C. Lechanoine-Leluc;A. Martin;Y. Onel;A. Penzo;D. Rapin;P. Schiavon;R.L. Shypit;A. VillariL., Linssen; C. I., Beard; Birsa, Renato; K., Bos; Bradamante, Franco; D. V., Bugg; A. S., Clough; DALLA TORRE, Silvia; Giorgi, Marcello; J. R., Hall; J. C., Kluyver; R. A., Kunne; C., Lechanoine Leluc; Martin, Anna; Y., Onel; A., Penzo; D., Rapin; Schiavon, Paolo; R. L., Shypit; A., Villar