On the basis of 2000 Υ{hooked}, Υ{hooked}′ and Υ{hooked}″ events obtained in π --W interactions at 194 GeV/c we extract a value for the cross section times the branching ratio of B μμσ = (0.96±0.04±0.17) pb nucleon -1. The (Υ{hooked}′ + Υ{hooked}″) Υ{hooked} ratio is found to be 0.53 ± 0.19. The observed differential x F and P T distributions are compared with those of the Drell-Yan continuum, and the cross section and the x F distribution are compared with theoretical predictions.
Production of Upsilon By 194 Gev/c Negative Pions On Tungsten
GORINI, Edoardo;
1985-01-01
Abstract
On the basis of 2000 Υ{hooked}, Υ{hooked}′ and Υ{hooked}″ events obtained in π --W interactions at 194 GeV/c we extract a value for the cross section times the branching ratio of B μμσ = (0.96±0.04±0.17) pb nucleon -1. The (Υ{hooked}′ + Υ{hooked}″) Υ{hooked} ratio is found to be 0.53 ± 0.19. The observed differential x F and P T distributions are compared with those of the Drell-Yan continuum, and the cross section and the x F distribution are compared with theoretical predictions.File in questo prodotto:
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