EVIDENCE FOR A SUPER-HARD POMERON STRUCTURE

Date

1992-12-01

Author

BRANDT, A
ERHAN, S
KUZUCU, A
MEDINNIS, M
OZDES, N
SCHLEIN, PE
Zeyrek, Mehmet Tevfik
ZWEIZIG, JG
CHEZE, JB
ZSEMBERY, J

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Results are presented from a study of jet production in ppBAR interactions with square-root s = 630 GeV at the CERN SppS-ColliderBAR, which are tagged by a proton or antiproton which possesses more than 90% of the incident beam momentum. The hard scattering which occurs between a parton in a beam particle and another in the soft residual component (pomeron-dominated) of the tagged proton allows the pomeron's partonic structure to be investigated. The observed jet distributions are in good agreement with expectations for hard parton-parton scattering in QCD. The pomeron exhibits a hard structure like 1 - x. However, there is an additional significant (30%) delta-function-like component, in which the entire momentum of the pomeron seems to participate in the hard scattering.

Subject Keywords

Lund Monte-Carlo, E+E-Physics, Hadron-collisions, Jet fragmentation, Diffractive scattering, Cern pbarp collider

URI

https://hdl.handle.net/11511/56121

Journal

PHYSICS LETTERS B

DOI

https://doi.org/10.1016/0370-2693(92)91281-d

Collections

Department of Physics, Article

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Citation Formats

A. BRANDT et al., “EVIDENCE FOR A SUPER-HARD POMERON STRUCTURE,” PHYSICS LETTERS B, pp. 417–424, 1992, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56121.