Inclusive production of vector and tensor mesons in antiproton-proton annihilation and non-annihilation interactions at 9.1 GeV/c

Abstract

Cross sections have been determined for the inclusive production of vector (ϱ 0, ω, K ∗) and tensor (f, A 2 ±) mesons in pp reactions at 9.1 GeV/c for both annihilation and non-annihilation processes. Distributions in the Feynman variable x and transverse momentum squared, p T 2, have been examined for the ϱ 0, ω and f mesons. The slopes for p T 2 appear to be exponential and decrease with increasing particle mass for both annihilation and non-annihilation reactions, furthermore the slopes have consistently higher values for non-annihilation reactions. Comparisons with other data indicate that the ratio ϱ 0/ π − is independent of antiproton momentum in annihilation processes.