Threshold Pion Production at Large Momentum Transfers

Threshold pion electroproduction at large momentum transfers

Timelike formfactors of pion, kaon, and proton at large momentum transfers

Form factors of the proton, pion, and kaon for large timelike momentum transfers have recently been measured with precision. The results and future prospects are discussed.

INELASTIC ELECTRON SCATTERING FROM 3He AND 4He IN THE THRESHOLD REGION AT HIGH MOMENTUM

The cross section for inclusive inelastic electron scattering from the helium isotopes has been measured at momentum transfers squared of 0.8zQ2<5.0 (GeV/c)2 for 3He and 0.8LQ212.4 (GeV/c)2 for 4He. The data were taken at 8O and cover the range 0.6<x<l, where x = Q2/2MHeV, which includes the elastic peak, nuclear breakup threshold, the high momentum tail of the quasi elastic scattering, and pio...

1 1 A pr 2 00 7 Two - pion - exchange contributions to the pp → ppπ 0 reaction

Our previous study of the near-threshold pp → ppπ reaction based on a hybrid nuclear effective field theory is further elaborated by examining the momentum dependence of the relevant transition operators. We show that the two-pion exchange diagrams give much larger contributions than the one-pion exchange diagram, even though the former is of higher order in the Weinberg counting scheme. The re...

1 7 A pr 2 00 7 Two - pion - exchange contributions to the pp → ppπ 0 reaction

Our previous study of the near-threshold pp → ppπ reaction based on a hybrid nuclear effective field theory is further elaborated by examining the momentum dependence of the relevant transition operators. We show that the two-pion exchange diagrams give much larger contributions than the one-pion exchange diagram, even though the former is of higher order in the Weinberg counting scheme. The re...