O(α^2 \ln(m_μ/m_e)) Corrections to Electron Energy Spectrum in Muon Decay

Details O(α^2 \ln(m_μ/m_e)) Corrections to Electron Energy Spectrum in Muon Decay O(α^2 \ln(m_μ/m_e)) Corrections to Electron Energy Spectrum in Muon Decay

2002-05-15

arxiv.org/abs/hep-ph/0205172v1

Phys.Rev. D66 (2002) 093003

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, LaTeX, revtex4.cls, 1 PostScript figure

Scientific paper

10.1103/PhysRevD.66.093003

O(\alpha^2 \ln(m_\mu/m_e)) corrections to electron energy spectrum in muon
decay are computed using perturbative fragmentation function approach. The
magnitude of these corrections is comparable to anticipated precision of the
TWIST experiment at TRIUMF where Michel parameters will be extracted from the
measurement of the electron energy spectrum in muon decay.

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