Article
Measurement of J/ψ Helicity Distributions in Inelastic Photoproduction at HERA
Journal of High Energy Physics
Document Type
Article
Publication Date
12-1-2009
Keywords
- Lepton-Nucleon scattering
Disciplines
Abstract
The J/ψ decay angular distributions have been measured in inelastic photo-production in ep collisions with the ZEUS detector at HERA, using an integrated luminosity of 468 pb-1. The range in photon-proton centre-of-mass energy, W, was 50 < W < 180 GeV. The J/ψ mesons were identified through their decay into muon pairs. The polar and azimuthal angles of the μ+ were measured in the J/ψ rest frame and compared to theoretical predictions at leading and next-to-leading order in QCD. © SISSA 2009.
DOI
https://doi.org/10.1088/1126-6708/2009/12/007
First Department
Physics
Acknowledgements
Retrieved February 22, 2021 from https://iopscience.iop.org/article/10.1088/1126-6708/2009/12/007/pdf
Citation Information
S. Chekanov, M. Derrick, S. Magill, B. Musgrave, et al.. "Measurement of J/ψ Helicity Distributions in Inelastic Photoproduction at HERA" Journal of High Energy Physics Vol. 2009 Iss. 12 (2009) Available at: http://works.bepress.com/margarita_mattingly/131/