Publication
Title
Measurement of the helicity of **W** bosons in top-quark decays
Author
Institution/Organisation
CDF Collaboration
Abstract
 We measure the branching fraction of the top quark to longitudinally and right-handed polarized W bosons, F0 and F+, using approximately 200  pb-1 of p̅ p collisions collected by the CDF II detector. We analyze two quantities sensitive to the W helicity: the invariant mass of the charged lepton and the bottom-quark jet in the decay t→Wb→ℓνb (where ℓ=e or μ), and the transverse momentum of the charged lepton. Constrained fits yield F0=0.74-0.34+0.22, and F+<0.27 at the 95% confidence level. These measurements are consistent with the standard model predictions.
Language
English
Source (journal)
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Publication
Lancaster, Pa : 2006
ISSN
0556-2821
Volume/pages
73:11(2006), p. 111103,1-111103,7
ISI
000238698300003
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
 Faculty/Department [E?say:metaLocaldata.cgzprojectinf] Publication type Subject Affiliation Publications with a UAntwerp address