Improved Constraints on an Axion-Mediated Force

被引：82

作者：

Hoedl, S. A. ^{[1
]}

Fleischer, F. ^{[1
]}

Adelberger, E. G. ^{[1
]}

Heckel, B. R. ^{[1
]}

机构：

[1] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 04期

基金：

美国国家科学基金会;

关键词：

PARTICLE PHYSICS;

D O I：

10.1103/PhysRevLett.106.041801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Low mass pseudoscalars, such as the axion, can mediate macroscopic parity and time-reversal symmetry-violating forces. We searched for such a force between polarized electrons and unpolarized atoms using a novel, magnetically unshielded torsion pendulum. We improved the laboratory bounds on this force by more than 10 orders of magnitude for pseudoscalars heavier than 1 meV and have constrained this force over a broad range of astrophysically interesting masses (10 mu eV to 10 meV).

引用

页数：4

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