Determination of the antiproton-to-electron mass ratio by precision laser spectroscopy of (p)over-barHe+

被引：114

作者：

Hori, M. ^{[1
]}

Dax, A.

Eades, J.

Gomikawa, K.

Hayano, R. S.

Ono, N.

Pirkl, W.

Widmann, E.

Torii, H. A.

Juhasz, B.

Barna, D.

Horvath, D.

机构：

[1] CERN, CH-1211 Geneva 23, Switzerland

[2] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[3] Stefan Meyer Inst Subatom Phys, A-1090 Vienna, Austria

[4] Univ Tokyo, Inst Phys, Meguro Ku, Tokyo 1538902, Japan

[5] Hungarian Acad Sci, Inst Nucl Res, H-4001 Debrecen, Hungary

[6] KFKI Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.96.243401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A femtosecond optical frequency comb and continuous-wave pulse-amplified laser were used to measure 12 transition frequencies of antiprotonic helium to fractional precisions of (9-16)x10(-9). One of these is between two states having microsecond-scale lifetimes hitherto unaccessible to our precision laser spectroscopy method. Comparisons with three-body QED calculations yielded an antiproton-to-electron mass ratio of M-(p)over bar/m(e)=1836.152 674(5).

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页数：4

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