Muon decay spectrum: Leading logarithmic approximation
نویسندگان
چکیده
منابع مشابه
First order radiative corrections to polarized muon decay spectrum
The first order QED corrections to the polarized muon decay spectrum are considered. The exact dependence on electron and muon masses is kept. Numerical results are presented.
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Radiative corrections to polarized muon decay spectrum of the second and higher orders in αQED are considered. Leading and next–to–leading logarithmic approximations are used. Exponentiation of soft photons is discussed. The present theoretical uncertainty of the spectrum description is estimated.
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Recently Georgi has discussed the possible existence of ‘Unparticles’ describable by operators having non-integral scaling dimensions. With the interaction of these with the Standard Model (SM) particles being constrained only by gauge and Lorentz symmetries, it affords a new source for lepton flavour violation. Current and future muon decay experiments are shown to be very sensitive to such sc...
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In the context of the minimal supersymmetric extension of the Standard Model with the right-handed Majorana neutrinos, we study lepton flavor violating processes including full renormalization group running effects. We systematically compare our results with the commonly used leading logarithmic approximation, resorting to a “best fit” approach to fix all the high energy Yukawa matrices. We fin...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.65.113006