MEASUREMENT OF E+E- ANNIHILATION AT REST INTO 4 GAMMA-RAYS

被引：21

作者：

ADACHI, S

CHIBA, M

HIROSE, T

NAGAYAMA, S

NAKAMITSU, Y

SATO, T

YAMADA, T

机构：

[1] Department of Physics, Tokyo Metropolitan University, Tokyo 158, Setagaya-ku

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.65.2634

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured for the first time the decay rate for e+e4 from rest, by using a multi - ray spectrometer. The branching ratio R=S4/S2, where S4 and S2 are the 4 and 2 rates, respectively, was measured to be R=[1.30±0. 26(stat)±0.16(system)]×10-6, consistent with the lowest-order QED calculation. © 1990 The American Physical Society.

引用

页码：2634 / 2637

页数：4

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