Rho^0 meson production in the pp ->pppi+pi- reaction at 3.67 GeV/c

F. Balestra; Y. Bedfer; R. Bertini; L. C. Bland; A. Brenschede; F. Brochard; M. P. Bussa; Seonho Choi; M. L. Colanton; R. Dressler; M. Dzemidzic; J. -Cl. Faivre; A. Ferrero; L. Ferrero; J. Foryciarz; I. FrÃ¶hlich; V. Frolov; R. Garfagnini; A. Grasso; S. Heinz; W. W. Jacobs; W. KÃ¼hn; A. Maggiora; M. Maggiora; A. Manara; D. Panzieri; H. -W. Pfaff; G. Piragino; A. Popov; J. Ritman; P. Salabura; V. Tchalyshev; F. Tosello; S. E. Vigdor; G. Zosi

doi:10.1103/PhysRevLett.89.092001

paper

Rho^0 meson production in the pp ->pppi+pi- reaction at 3.67 GeV/c

arXiv:hep-ex/0209004 · doi:10.1103/PhysRevLett.89.092001

Abstract

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.

3 figures, 11 pages