We report on measurements of the Υ(1S), Υ(2S), and Υ(3S) differential cross sections (d2σ/dpTdy)|y|<0.4, as well as on the Υ(1S) polarization in p¯p collisions at √s=1.8TeV using a sample of 77±3pb−1 collected by the collider detector at Fermilab. The three resonances were reconstructed through the decay Υ→μ+μ−. The measured angular distribution of the muons in the Υ(1S) rest frame is consistent with unpolarized meson production.
Upsilon production and polarization in p(p)over-bar collisions at root s=1.8 TeV
CAUZ, Diego;GIORDANI, Mario;PAULETTA, Giovanni;Santi L.;
2002-01-01
Abstract
We report on measurements of the Υ(1S), Υ(2S), and Υ(3S) differential cross sections (d2σ/dpTdy)|y|<0.4, as well as on the Υ(1S) polarization in p¯p collisions at √s=1.8TeV using a sample of 77±3pb−1 collected by the collider detector at Fermilab. The three resonances were reconstructed through the decay Υ→μ+μ−. The measured angular distribution of the muons in the Υ(1S) rest frame is consistent with unpolarized meson production.File in questo prodotto:
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