D. Gill

Full angular distribution of the analysing power in p elastic scattering at 697 MeV/c

Abstract Full angular distributions of the differential cross-section dσ/dμ and of the analysing power Ay in p p elastic scattering have been measured at 697 MeV/c. The results of Ay are compared with the predictions of various theoretical models.

Measurement of the analyzing power in elastic scattering at 439 and 544 MeV/c

Abstract The angular distributions of the analyzing power Ay and of the differential cross section d σ/ d Ω in p p elastic scattering have been measured at 439 and 544 MeV/c. The results of Ay are compared with various theoretical models.

Measurement of the analyzing power in elastic scattering at 700 MeV/c

Abstract As part of experiment PS198 at LEAR, complete angular distributions of the analyzing power in p − p elastic scattering have been recently measured. Data were taken at three different momenta of the antiproton beam: 450, 550 and 700 MeV/c. A polarized proton target was used together with the high resolution spectrometer SPES II. Preliminary data at 700 MeV/c are presented and compared to theoretical predictions.

Spin Transfer in ExclusiveΛProduction fromp→pCollisions at3.67GeV/c

We report the first polarization transfer measurements for exclusive hyperon production reactions. The normal spin transfer coefficient DNN for pp -> p K+ Lambda is large and negative for forward Lambda production at a beam momentum of 3.67 GeV/c, a result qualitatively consistent with expectations for a mechanism dominated by kaon-exchange and rescattering. The sign of DNN is opposite to that observed in the fragmentation regime for inclusive Lambda production at much higher energies.

Spin Transfer in Exclusive Lambda Production from pp Collisions at 3.67 GeV/c

We report the first polarization transfer measurements for exclusive hyperon production reactions. The normal spin transfer coefficient DNN for pp -> p K+ Lambda is large and negative for forward Lambda production at a beam momentum of 3.67 GeV/c, a result qualitatively consistent with expectations for a mechanism dominated by kaon-exchange and rescattering. The sign of DNN is opposite to that observed in the fragmentation regime for inclusive Lambda production at much higher energies.

Spin transfer in exclusive Lambda production from polarized-p p collisions at 3.67-GeV/c

We report the first polarization transfer measurements for exclusive hyperon production reactions. The normal spin transfer coefficient DNN for pp -> p K+ Lambda is large and negative for forward Lambda production at a beam momentum of 3.67 GeV/c, a result qualitatively consistent with expectations for a mechanism dominated by kaon-exchange and rescattering. The sign of DNN is opposite to that observed in the fragmentation regime for inclusive Lambda production at much higher energies.