Rho^0 meson production in the pp ->pppi+pi- reaction at 3.67 GeV/c
  Total and differential cross sections for the exclusive reaction pp->pp rho^0 observed via the pi+pi- decay channel have been measured at beam momentum=3.67 GeV/c. The observed total meson production cross section is determined to be 23.4 +- 0.8 +-8 microb and is significantly lower than typical cross sections used in model calculations for heavy ion collisions. The differential cross sections measured indicate a strong anisotropy cos^2(theta^{CM}) in the rho^0 meson production. 
F. Balestra, Y. Bedfer, R. Bertini, L.C. Bland, A. Brenschede, F.   Brochard, M.P. Bussa, Seonho Choi, M.L. Colanton, R. Dre...