J/psi Polarization in pp collisions at s = 7 TeV
Journal Article
·
· Physical Review Letters
- Lawrence Livermore National Laboratory (LLNL)
- ORNL
- University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)
The ALICE Collaboration has studied J/{Psi} production in pp collisions at {radical}s = 7 TeV at the LHC through its muon pair decay. The polar and azimuthal angle distributions of the decay muons were measured, and results on the J/{Psi} polarization parameters {lambda}{sub {theta}} and {lambda}{sub {phi}} were obtained. The study was performed in the kinematic region 2.5 < y < 4, 2 < p{sub t} < 8 GeV/c, in the helicity and Collins-Soper reference frames. In both frames, the polarization parameters are compatible with zero, within uncertainties.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 1042876
- Journal Information:
- Physical Review Letters, Vol. 108, Issue 8; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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