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

页码：417 / 424

页数：8

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