Measurement of the 1s-2s energy interval in muonium
The 1s-2s interval has been measured in the muonium (&mgr;(+)e(-)) atom by Doppler-free two-photon pulsed laser spectroscopy. The frequency separation of the states was determined to be 2 455 528 941.0(9.8) MHz, in good agreement with quantum electrodynamics. The result may be interpreted as a measurement of the muon-electron charge ratio as -1-1.1(2.1)x10(-9). We expect significantly higher accuracy at future high flux muon sources and from cw laser technology.
Meyer
V
Physikalisches Institut der Universitat Heidelberg, D-69120 Heidelberg, Germany.
Bagayev
SN
Baird
PE
Bakule
P
Boshier
MG
Breitruck
A
Cornish
SL
Dychkov
S
Eaton
GH
Grossmann
A
Hubl
D
Hughes
VW
Jungmann
K
Lane
IC
Liu
YW
Lucas
D
Matyugin
Y
Merkel
J
zu Putlitz G
Reinhard
I
Sandars
PG
Santra
R
Schmidt
PV
Scott
CA
Toner
WT
Towrie
M