MESON CLOUD IN THE NUCLEON AND (D)OVER-BAR-(U)OVER-BAR ASYMMETRY FROM THE DRELL-YAN PROCESSES

被引：41

作者：

SZCZUREK, A

SPETH, J

GARVEY, GT

机构：

[1] INST NUCL PHYS, PL-31342 KRAKOW, POLAND

[2] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA

来源：

NUCLEAR PHYSICS A | 1994年 / 570卷 / 3-4期

关键词：

D O I：

10.1016/0375-9474(94)90082-5

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Mesonic models predict violation of the SU(2) symmetry in the nucleon sea which seems to be necessary to explain the violation of the Gottfried sum rule. At the present time there is no generally accepted explanation of the effect. We find that careful analysis of the Drell-Yan processes in pp and pn collisions will provide complementary data to the Gottfried sum rule on the dBAR-uBAR asymmetry. We also find that some combinations of experimental results are insensitive to details of the mesonic models, offering the possibility to demonstrate the existence of the mesonic cloud in the nucleon.

引用

页码：765 / 781

页数：17

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