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Determination of the antiproton-to-electron mass ratio by precision laser spectroscopy of pHe+.
Hori, M; Dax, A; Eades, J; Gomikawa, K; Hayano, R S; Ono, N; Pirkl, W; Widmann, E; Torii, H A; Juhász, B; Barna, D; Horváth, D.
Afiliação
  • Hori M; CERN, CH-1211 Geneva 23, Switzerland.
Phys Rev Lett ; 96(24): 243401, 2006 Jun 23.
Article em En | MEDLINE | ID: mdl-16907239
ABSTRACT
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 Mp/me=1836.152674(5).
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2006 Tipo de documento: Article
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2006 Tipo de documento: Article