FURTHER EVIDENCE FOR POMERON QUARK INTERACTIONS - OBSERVATION OF LARGE LAMBDA(0) POLARIZATION IN PP-](LAMBDA(0)K(+))P

被引：39

作者：

HENKES, T

ALITTI, J

BONINO, R

CHEZE, JB

ERHAN, S

MEDINNIS, M

POVH, B

SCHLEIN, PE

SHERWOOD, P

SMITH, AM

ZSEMBERY, J

ZWEIZIG, JG

机构：

[1] MAX PLANCK INST NUCL PHYS,W-6900 HEIDELBERG 1,GERMANY

[2] CENS,F-91191 GIF SUR YVETTE,FRANCE

[3] CERN,CH-1211 GENEVA 23,SWITZERLAND

来源：

PHYSICS LETTERS B | 1992年 / 283卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(92)91447-H

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report an analysis of the diffractive reaction pp --> (LAMBDA-0K+)p, measured at r square-root s=63 GeV in an open geometry forward spectrometer experiment at the CERN Intersecting Storage Rings. In the rest frame of the (LAMBDA-0K+) system, which has nearly the beam momentum of 31.4 GeV, the LAMBDA-0 is observed to be sharply peaked forward, similar to earlier observations in the reaction pp --> (LAMBDA-0-phi-0K+)p, which were interpreted as the first direct evidence for pomeron-quark interactions. A smaller backward peak is also observed which may be evidence for pomeron-diquark interactions. The polarization of the LAMBDA-0 increases to more than 60% when the diffractive mass reaches almost-equal-to 2.8 GeV.

引用

页码：155 / 160

页数：6

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