Publication
Title
Search for V+A current in top-quark decays in $p\overline{p}$ collisions at $\sqrt{s}$=1.96 TeV
Author
Institution/Organisation
CDF Collaboration
Abstract
 We report an upper limit on the fraction of V+A current, fV+A, in top-quark decays, using approximately 700  pb-1 of pp̅ collisions at √s=1.96   TeV acquired by the upgraded Collider Detector at Fermilab. For the decay t→Wb→ℓνb (where ℓ=e or μ), the invariant mass of the charged lepton and the bottom quark jet is sensitive to the polarization of the W boson. We determine fV+A=-0.06±0.25 given a top-quark mass of 175  GeV/c2. We set an upper limit on fV+A of 0.29 at the 95% confidence level, an improvement by a factor of 2 on the previous best direct limit.
Language
English
Source (journal)
Physical review letters. - New York, N.Y.
Publication
New York, N.Y. : 2007
ISSN
0031-9007
Volume/pages
98:7(2007), p. 072001,1-072001,7
ISI
000244250300021
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
 Faculty/Department Publication type Subject Affiliation Publications with a UAntwerp address