Muon capture in Ar. The muon lifetime and yields of Cl isotopes

2008 ◽  
Vol 72 (6) ◽  
pp. 735-736 ◽  
Author(s):  
A. V. Klinskikh ◽  
S. Brianson ◽  
V. B. Brudanin ◽  
V. G. Egorov ◽  
C. Petitjean ◽  
...  
Keyword(s):  
Author(s):  
Rebecca Carey ◽  
Tim Gorringe ◽  
David Hertzog

The part-per-million measurement of the positive muon lifetime and determination of the Fermi constant by the MuLan experiment at the Paul Scherrer Institute is reviewed. The experiment used an innovative, time-structured, surface muon beam and a near-4\piπ, finely-segmented, plastic scintillator positron detector. Two in-vacuum muon stopping targets were used: a ferromagnetic foil with a large internal magnetic field, and a quartz crystal in a moderate external magnetic field. The experiment acquired a dataset of 1.6 \times 10^{12}1.6×1012 positive muon decays and obtained a muon lifetime \tau_{\mu} = 2\, 196\, 980.3(2.2)τμ=2196980.3(2.2)~ps (1.0~ppm) and Fermi constant G_F = 1.166\, 378\, 7(6) \times 10^{-5}F=1.1663787(6)×10−5 GeV^{-2}−2 (0.5~ppm). The thirty-fold improvement in \tau_{\mu}τμ has proven valuable for precision measurements in nuclear muon capture and the commensurate improvement in G_FF has proven valuable for precision tests of the standard model.


2021 ◽  
Vol 103 (10) ◽  
Author(s):  
Iarley P. Lobo ◽  
Christian Pfeifer

1959 ◽  
Vol 31 (3) ◽  
pp. 802-822 ◽  
Author(s):  
H. PRIMAKOFF
Keyword(s):  

1980 ◽  
Vol 335 (1-2) ◽  
pp. 137-146 ◽  
Author(s):  
Wolfgang H. Breunlich
Keyword(s):  

1960 ◽  
Vol 119 (1) ◽  
pp. 435-437 ◽  
Author(s):  
Masato Morita ◽  
Daniel Greenberg

1990 ◽  
Vol 510 (4) ◽  
pp. 591-608 ◽  
Author(s):  
H.C. Chiang ◽  
E. Oset ◽  
P.Fernández De Córdoba
Keyword(s):  

1973 ◽  
Vol 207 (3) ◽  
pp. 609-619 ◽  
Author(s):  
R.A. Eramzhyan ◽  
Yu.A. Salganic

1963 ◽  
Vol 132 (6) ◽  
pp. 2691-2692 ◽  
Author(s):  
J. L. Rosen ◽  
E. W. Anderson ◽  
E. J. Bleser ◽  
L. M. Lederman ◽  
S. L. Meyer ◽  
...  
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