rho0 meson production in the pp ---> pp pi+ pi- reaction at 3.67-GeV/c.
/ Authors
F. Balestra, Y. Bedfer, R. Bertini, L. Bland, A. Brenschede, F. Brochard, M. Bussa, Seonho Choi, M. Colantoni, R. Dressler
and 25 more authors
M. Dzemidzic, J. Faivre, A. Ferrero, L. Ferrero, J. Foryciarz, I. Fröhlich, V. Frolov, R. Garfagnini, A. Grasso, S. Heinz, W. Jacobs, W. Kühn, A. Maggiora, M. Maggiora, A. Manara, D. Panzieri, H. Pfaff, G. Piragino, A. Popov, J. Ritman, P. Salabura, V. Tchalyshev, F. Tosello, S. Vigdor, G. Zosi
/ Abstract
: Total and differential cross sections for the exclusive reaction pp-->pp rho observed via the pi(+)pi(-) decay channel have been measured at p(beam)=3.67 GeV/c. The observed total meson production cross section is determined to be (23.4+/-0.8+/-8) mu b 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 (approximately cos(theta(CM)(rho)) in the rho(0) meson production.
Journal: Physical Review Letters