Article
Dijet Angular Distributions in Direct and Resolved Photoproduction at HERA
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Document Type
Article
Publication Date
9-19-1996
Disciplines
Abstract
Jet photoproduction, where the two highest transverse energy (ETjet) jets have ETjet above 6 GeV and a jet-jet invariant mass above 23 GeV, has been studied with the ZEUS detector at the HERA ep collider. Resolved and direct photoproduction samples have been separated. The cross section as a function of the angle between the jet-jet axis and the beam direction in the dijet rest frame has been measured for the two samples. The measured angular distributions differ markedly from each other. They agree with the predictions of QCD calculations, where the different angular distributions reflect the different spins of the quark and gluon exchanged in the hard subprocess.
DOI
https://doi.org/10.1016/0370-2693(96)00931-8
First Department
Physics
Acknowledgements
Accepted version retrieved July 19, 2021 from https://www.andrews.edu/sed/gpc/faculty-research/coffen-research/coffen_2009_600.pdf
Citation Information
M. Derrick, D. Krakauer, S. Magill, D. Mikunas, et al.. "Dijet Angular Distributions in Direct and Resolved Photoproduction at HERA" Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics Vol. 384 Iss. 1-4 (1996) p. 401 - 413 Available at: http://works.bepress.com/margarita_mattingly/38/