ϒ Production and Polarization in ppbar Collisions at (s) = 1.8 TeV
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 ppbar collisions at (s) = 1.8 TeV using a sample of 77+/-3 pb-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.
- Publication:
-
Physical Review Letters
- Pub Date:
- April 2002
- DOI:
- 10.1103/PhysRevLett.88.161802
- Bibcode:
- 2002PhRvL..88p1802A