EVIDENCE FOR A SUPER-HARD POMERON STRUCTURE

被引：226
|
作者：
BRANDT, A
ERHAN, S
KUZUCU, A
MEDINNIS, M
OZDES, N
SCHLEIN, PE
ZEYREK, MT
ZWEIZIG, JG
CHEZE, JB
ZSEMBERY, J
机构：
[1] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024
[2] CENS,F-91191 GIF SUR YVETTE,FRANCE
来源：
PHYSICS LETTERS B | 1992年 / 297卷 / 3-4期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0370-2693(92)91281-D
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
引用
收藏
页码：417 / 424
页数：8
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