Positron-neutrino correlation in the 0+ → 0+ decay of 32Ar

被引：120

作者：

Adelberger, EG ^{[1
]}

Ortiz, C

García, A

Swanson, HE

Beck, M

Tengblad, O

Borge, MJG

Martel, I

Bichsel, H

机构：

[1] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[2] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[3] CSIC, Inst Estructura Mat, E-28006 Madrid, Spain

[4] CERN, Div EP, CH-1211 Geneva, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.83.1299

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The positron-neutrino correlation in the 0(+) --> 0(+) beta decay bf Ar-32 was measured at ISOLDE by analyzing the effect of lepton recoil on the shape of the narrow proton group following the superallowed decay. Our result is consistent with the standard model prediction. For vanishing Fierz interference we find a = 0.9989 +/- 0.0052 +/- 0.0039, which yields improved constraints on scalar weak interactions.

引用

页码：1299 / 1302

页数：4

共 19 条

[1] ISOBARIC MASS EQUATION FOR A = 1-45 AND SYSTEMATICS OF COULOMB DISPLACEMENT ENERGIES [J].