scholarly journals Michel parameters in radiative muon decay

2016 ◽  
Vol 2016 (9) ◽  
Author(s):  
A. B. Arbuzov ◽  
T. V. Kopylova
Keyword(s):  
Muon Decay ◽  
Michel Parameters

scholarly journals K-meson neutrinoless double muon decay as a probe of neutrino masses and mixings

2000 ◽  
Vol 493 (1-2) ◽  
pp. 82-87 ◽  
Author(s):  
Claudio Dib ◽  
Vladimir Gribanov ◽  
Sergey Kovalenko ◽  
Ivan Schmidt
Keyword(s):  
Muon Decay ◽  
Neutrino Masses ◽  
K Meson ◽  
Neutrino Masses And Mixings

Temperature dependence of muon-decay positron channeling in semiconductors

1991 ◽  
Vol 64 (1-4) ◽  
pp. 535-541 ◽  
Author(s):  
H. Simmler ◽  
P. Eschle ◽  
H. Keller ◽  
W. Kündig ◽  
W. Odermatt ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Muon Decay ◽  
Decay Positron

Lower bound on dilepton mass from polarized muon decay

1992 ◽  
Vol 283 (1-2) ◽  
pp. 123-124 ◽  
Author(s):  
Eric D. Carlson ◽  
Paul H. Frampton
Keyword(s):  
Lower Bound ◽  
Muon Decay

Radiative corrections to muon decay

1972 ◽  
Vol 10 (3) ◽  
pp. 475-489 ◽  
Author(s):  
D. A. Ross
Keyword(s):  
Muon Decay ◽  
Radiative Corrections

scholarly journals Racetrack FFAG muon decay ring for nuSTORM with triplet focusing

2018 ◽  
Vol 13 (09) ◽  
pp. P09013-P09013
Author(s):  
J.-B. Lagrange ◽  
R.B. Appleby ◽  
J.M. Garland ◽  
J. Pasternak ◽  
S. Tygier
Keyword(s):  
Muon Decay

scholarly journals On spin asymmetry in muon and tau decays

2018 ◽  
Vol 33 (32) ◽  
pp. 1850191
Author(s):  
A. B. Arbuzov ◽  
T. V. Kopylova ◽  
I. K. Sklyarov
Keyword(s):  
Charged Lepton ◽  
Spin Asymmetry ◽  
Second Order ◽  
Tau Leptons ◽  
Mass Ratio ◽  
Fermi Model ◽  
Tau Decays ◽  
Standard Formula ◽  
Leading Logarithm ◽  
Michel Parameters

The angular asymmetry in decays of polarized muons and tau leptons is discussed. Both the standard [Formula: see text] Fermi model and the general parametrization via Michel parameters are considered. Numerical importance of contributions suppressed by charged lepton mass ratio is underlined. Contribution of the second order QED correction is estimated in the leading logarithm approximation.

scholarly journals The history of the muon (g-2) experiments

2019 ◽  
Author(s):  
B. Lee Roberts
Keyword(s):  
Standard Model ◽  
Quantum Electrodynamics ◽  
National Laboratory ◽  
New Physics ◽  
Brookhaven National Laboratory ◽  
Muon Decay ◽  
Higgs Bosons ◽  
The Standard Model ◽  
History Of ◽  
First Time

I discuss the history of the muon (g-2)(g−2) measurements, beginning with the Columbia-Nevis measurement that observed parity violation in muon decay, and also measured the muon gg-factor for the first time, finding g_\mu=2gμ=2. The theoretical (Standard Model) value contains contributions from quantum electrodynamics, the strong interaction through hadronic vacuum polarization and hadronic light-by-light loops, as well as the electroweak contributions from the WW, ZZ and Higgs bosons. The subsequent experiments, first at Nevis and then with increasing precision at CERN, measured the muon anomaly a_\mu = (g_\mu-2)/2aμ=(gμ−2)/2 down to a precision of 7.3 parts per million (ppm). The Brookhaven National Laboratory experiment E821 increased the precision to 0.54 ppm, and observed for the first time the electroweak contributions. Interestingly, the value of a_\muaμ measured at Brookhaven appears to be larger than the Standard Model value by greater than three standard deviations. A new experiment, Fermilab E989, aims to improve on the precision by a factor of four, to clarify whether this result is a harbinger of new physics entering through loops, or from some experimental, statistical or systematic issue.

Sign in / Sign up

Export Citation Format

Share Document