Oblique corrections to the [ital W] width

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.49.1363· OSTI ID:5432124

Rosner, J L; Worah, M P ^[1]; Takeuchi, T ^[2]

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1. Enrico Fermi Institute and Department of Physics, University of Chicago, 5640 S. Ellis Avenue, Chicago, Illinois 60637 (United States)
2. Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)

The lowest-order expression for the partial [ital W] width to [ital e][nu], [Gamma]([ital W][r arrow][ital e][nu])=[ital G][sub [mu]][ital M[ital W]][sup 3]/(6[pi] [radical]2) , has no oblique radiative corrections from new physics if the measured [ital W] mass is used. Here [ital G][sub [mu]]=(1.166 39[plus minus]0.000 02)[times]10[sup [minus]5] GeV/[ital c][sup 2] is the muon decay constant. For the present value of [ital M][sub [ital W]]=(80.14[plus minus]0.27) GeV/[ital c][sup 2], and with [ital m][sub [ital t]]=140 GeV/[ital c][sup 2], one expects [Gamma]([ital W][r arrow][ital e][nu])=(224.4[plus minus]2.3) MeV. The total width [Gamma][sub tot]([ital W]) is also expected to lack oblique corrections from new physics, so that [Gamma][sub tot]([ital W])/[Gamma]([ital W][r arrow][ital e][nu])=3+6[1+[l brace][alpha][sub [ital s]]([ital M][sub [ital W]])/[pi][r brace]]. Present data are consistent with this prediction.

• DOE Contract Number: FG02-90ER40560
• OSTI ID: 5432124
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 49:3; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662210 -- Specific Theories & Interaction Models
662380* -- Decays of Intermediate Bosons-- (1992-)
662440 -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CORRECTIONS
ELEMENTARY PARTICLES
HIGGS BOSONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
PARTICLE PROPERTIES
PARTICLE WIDTHS
POSTULATED PARTICLES
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
RADIATIVE CORRECTIONS
W MINUS BOSONS
W PLUS BOSONS