1ST OBSERVATION OF PHOTON-PHOTON INTERACTIONS AT DORIS

被引：16

作者：

BESCH, HJ

EISERMANN, HW

LOHR, B

NOLDEKE, G

TONUTTI, M

VOLLRATH, W

WILCKE, R

HOFFMANN, H

DEHNE, HC

KOWALSKI, H

EYSS, HJV

SCHMITT, HVD

机构：

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

[2] DESY,HAMBURG,FED REP GER

[3] UNIV MAINZ,INST KERNPHYS,D-6500 MAINZ,FED REP GER

来源：

PHYSICS LETTERS B | 1979年 / 81卷 / 01期

关键词：

D O I：

10.1016/0370-2693(79)90720-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

With a forward tagging system and the BONANZA detector we observed 24 e+e-→e+e-e+e- events in agreement with the expected number from QED. We observed no e+e-→e+e- + hadrons event, and present an upper limit for the partial width Γη′→γγ of 11.5 keV (95% CL) which is evidence against the Han-Nambu quark model. © 1979.

引用

页码：79 / 83

页数：5

共 18 条

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