Laboratory search for spin-dependent short-range force from axionlike particles using optically polarized 3He gas

被引：53

作者：

Chu, P. -H. ^{[1
,2
]}

Dennis, A. ^{[3
]}

Fu, C. B. ^{[4
]}

Gao, H. ^{[1
,2
]}

Khatiwada, R. ^{[3
]}

Laskaris, G. ^{[1
,2
]}

Li, K. ^{[3
]}

Smith, E. ^{[3
]}

Snow, W. M. ^{[3
]}

Yan, H. ^{[3
]}

Zheng, W. ^{[1
,2
]}

机构：

[1] Duke Univ, Triangle Univ Nucl Lab, Durham, NC 27708 USA

[2] Duke Univ, Dept Phys, Durham, NC 27708 USA

[3] Indiana Univ, Dept Phys, Bloomington, IN 47408 USA

[4] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China

来源：

PHYSICAL REVIEW D | 2013年 / 87卷 / 01期

基金：

美国国家科学基金会;

关键词：

LOW-ENERGY FRONTIER; LIMITS;

D O I：

10.1103/PhysRevD.87.011105

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The possible existence of short-range forces between unpolarized and polarized spin-1/2 particles has attracted the attention of physicists for decades. These forces are predicted in various theories and provide a possible new source for parity and time-reversal symmetry violation. We use an ensemble of polarized He-3 gas in a cell with a 250-mu m thick glass window to search for a force from pseudoscalar boson exchange over sub-millimeter ranges. This interaction would produce an NMR frequency shift as an unpolarized mass is moved near and far from the polarized ensemble. We report a new upper bound with a factor of 10-30 improvement on the product g(s)g(p)(n) of the scalar couplings to the fermions in the unpolarized mass, and the pseudoscalar coupling of the polarized neutron in the 3He nucleus for force ranges from 10(-4) to 10(-2) m, which corresponds to a mass range of 2 x 10(-3) to 2 x 10(-5) eV for the pseudoscalar boson. This represents the most sensitive search that sets a direct limit on the important "axion window." DOI: 10.1103/PhysRevD.87.011105

引用

页数：5

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