Oblique Corrections To The W Width

Abstract

The lowest-order expression for the partial $W$ width to $e\nu ,\Gamma (W\to e\nu )=G_{\mu }{M}_W^3/(6\pi \sqrt{2})$, has no oblique radiative corrections from new physics if the measured $W$ mass is used. Here $G_{\mu }=(1.16639\pm 0.00002)\times 10^{-5}$ GeV/$c^2$ is the muon decay constant. For the present value of $M_W=(80.14\pm 0.27)$ GeV/$c^2$, and with $m_t=140$ GeV$/c^2$, one expects $\Gamma (W\to e\nu )=(224.4\pm 2.3)$ MeV. The total width ${\Gamma }_{\mathrm{tot}}(W)$ is also expected to lack oblique corrections from new physics, so that ${\Gamma }_{\mathrm{tot}}(W)/\Gamma (W\to e\nu )=3+6[1+\{{\alpha }_s(M_W)/\pi \}]$. Present data are consistent with this prediction.

15 pages (LaTeX), one PostScript figure not included (available upon request)

References in corpus (1)

• Single Lepton Production at Large Transverse Momentum

Cited by in corpus (21)

• Measurement of the Inclusive W and Z Production Cross Sections in pp Collisions at sqrt(s) = 7 TeV
• Extraction of the Width of the W Boson from Measurements of sigma(ppbar->W+X)B(W->e nu) and sigma(ppbar->Z+X)B(Z->e e) and their Ratio
• Measurement of the W Boson Mass with the Collider Detector at Fermilab
• Combination of CDF and D0 Results on W Boson Mass and Width
• W and Z Boson Production in PbarP Collisions at Sqrt(s)=1.8 TeV
• Electroweak Precision Tests of the Standard Model after the Discovery of the Higgs Boson
• Interpreting $W$ mass measurements in the SMEFT
• The NuTeV Anomaly, Neutrino Mixing, and a Heavy Higgs Boson
• Collider constraints on interactions of dark energy with the Standard Model
• Measurement of W and Z boson production cross sections
• Direct Measurement of the W Boson Width in ppbar Collisions at roots = 1.8 TeV
• A direct measurement of W boson decay width
• Precision Electroweak Tests of the Standard Model
• Direct measurement of the W boson width
• A direct Measurement of the W Boson Width in ppbar Collisions at sqrt(s) = 1.96 TeV
• The Measurement of M(W) from the W+W- Threshold Cross Section at LEP2
• Hunting physics beyond the standard model with unusual $W^{\pm }$ and $Z$ decays
• Leptonic Decays of the W-Boson in a Strong Electromagnetic Field
• Determination of the muonic branching ratio of the W boson and its total width via cross-section measurements at the Tevatron and LHC
• About the modern "experimental value" of W boson width.
• Supersymmetric QCD corrections to the W-boson width