1993/09/21 by Jonathan L. Rosner, Mihir P. Worah, Tatsu Takeuchi
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.49.1363
published as Phys.Rev. D49 (1994) 1363-1369 · 15 pages (LaTeX), one PostScript figure not included (available upon request)
arxiv created 1993/09/21 · openalex publication_date 1994/02/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The lowest-order expression for the partial W width to e\ensuremathν, \ensuremathΓ(W\ensuremath→e\ensuremathν)=\fracG_\ensuremathμMW3(6\ensuremathπ√(2)), has no oblique radiative corrections from new physics if the measured W mass is used. Here G_\ensuremathμ=(1.16639\ifmmode±\else\textpm\fi0.00002)\ifmmode×\else\texttimes\fi10^\ensuremath-5 GeV/c2 is the muon decay constant. For the present value of MW=(80.14\ifmmode±\else\textpm\fi0.27) GeV/c2, and with mt=140 GeV/c2, one expects \ensuremathΓ(W\ensuremath→e\ensuremathν)=(224.4\ifmmode±\else\textpm\fi2.3) MeV. The total width \ensuremathΓtot(W) is also expected to lack oblique corrections from new physics, so that \frac\ensuremathΓtot(W)\ensuremathΓ(W\ensuremath→e\ensuremathν)=3+6[1+\frac\ensuremathαs(MW)\ensuremathπ ]. Present data are consistent with this prediction.