pi-NN Coupling Constants from NN Elastic Data between 210 and 800 Mev

High partial waves for $pp$ and $np$ elastic scattering are examined critically from 210 to 800 MeV. Non-OPE contributions are compared with predictions from theory. There are some discrepancies, but sufficient agreement that values of the $\pi NN$ coupling constants $g_0^2$ for $\pi ^0$ exchange and $g^2_{c}$ for charged $\pi$ exchange can be derived. Results are $g^2_0 = 13.91 \pm 0.13 \pm 0.07$ and $g^2_c = 13.69 \pm 0.15 \pm 0.24$, where the first error is statistical and the second is an estimate of the likely systematic error, arising mostly from uncertainties in the normalisation of total cross sections and $d\sigma/d\Omega$.Comment: 21 pages of LaTeX, UI-NTH-940

An updated analysis of NN elastic scattering data to 1.6 GeV

An energy-dependent and set of single-energy partial-wave analyses of $NN$ elastic scattering data have been completed. The fit to 1.6~GeV has been supplemented with a low-energy analysis to 400 MeV. Using the low-energy fit, we study the sensitivity of our analysis to the choice of $\pi NN$ coupling constant. We also comment on the possibility of fitting $np$ data alone. These results are compared with those found in the recent Nijmegen analyses. (Figures may be obtained from the authors upon request.)Comment: 17 pages of text, VPI-CAPS-7/

LAMPF beam line polarimeters

This report describes the beam line polarimeters that are used in the primary p/sup -/ beams at LAMPF to monitor and measure the polarization of the beam. The devices are secondary standards of polarization and are calibrated primarily by the ion source quench ratio technique. Some independent checks of this technique are discussed

Nucleon-nucleon measurements at LAMPF

The first goal of the nucleon-nucleon groups at LAMPF is the complete determination of the isospin 0 and 1 elastic scattering amplitudes to 5% from 500 to 800 MeV. When previous data are combined with the recent data reported here, these amplitudes become well determined near 500 and 800 MeV. Measurements scheduled for 1991 should complete the measurements within this energy range. 12 refs., 1 fig., 1 tab

Polarization research and facilities at LAMPF

In summary, facilities exist for spin correlation and spin transfer measurements from 300 to 800 MeV with all (N,S,L) spin directions, and an energetic program is being pursued in several beam lines simultaneously. Elastic pp measurements at a few energies are making good progress but polarized neutron experiments are lagging. The problem of understanding the inelastic reactions has scarcely begun

Absolute polarization standards at medium and high energies. [200 to 900 MeV]

Although measurement of a polarization asymmetry is rather easy, the normalization of the measurement to obtain the analyzing power requires an absolute knowledge of the beam polarization or comparison with a known standard analyzing power. Such calibration standards can be hard to find. This paper concentrates on medium and higher energies, and divides the techniques into four categories: double scattering, polarized target methods, polarized source methods, and theoretical methods. Secondary standards are also discussed, and earlier data are assessed. 52 references, 6 figures. (RWR

Proton polarimeters for spin transfer experiments

The design and use of proton polarimeters for spin transfer (Wolfenstein parameter) measurements is discussed. Polarimeters are compared with polarized targets for spin dependent experiments. 32 refs., 4 figs

LAMPF NUCLEON-NUCLEON PROGRAM

Le programme Nucléon-Nucléon réalisé à LAMPF est résumé. Les efforts ont porté sur les réactions p+p inelastiques pour l'étude des tranferts et des correlations de spin. Nous espérons, avoir une bonne couverture des correlations de spin dans les réactions elastiques n+p en 1986. Les nouvelles installations prévues pour les expériences nucléon-nucléon et nucléon-noyau avec les faisceaux polarisés sont également présentées.NN activities at LAMPF are summarized. Measurements with p+p are now focusing on inelastic spin transfer and spin correlations. There should be good coverage of np spin correlations by 1986. Additional facilities are outlined for polarized beam nucleon and nuclear physics