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Higher precision measurement of the hfs interval of muonium and of the muon magnetic moment

Journal Article · · Phys. Rev. Lett.; (United States)

New higher precision measurements of the hyperfine Zeeman transitions in the ground state of muonium have been performed with use of the high--stopping-density surface ..mu../sup +/ beam at the Clinton P. Anderson Meson Physics Facility. The results are ..delta nu.. = 4 463 302.88(16) kHz (0.036 ppm) and ..mu../sub ..mu..//..mu../sub p/ = 3.183 346 1(11) (0.36 ppm). The current theoretical value of ..delta nu.. agrees well with experiment within the 0.77-ppm error ..delta nu../sub theor/, which is due principally to inaccuracy in evaluation of nonrecoil radiative correction term. The most precise current value of m/sub ..mu..//m/sub e/ is obtained from our value of ..mu../sub ..mu..//..mu../sub p/.

Research Organization:
Yale University, New Haven, Connecticut 06520
DOE Contract Number:
AC02-76ER03074
OSTI ID:
6559333
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 49:14; ISSN PRLTA
Country of Publication:
United States
Language:
English