Publications [#309501] of Seog Oh

Papers Published

1. Abulencia; A; others, Search for V + A current in top quark decay in p anti-p collisions at s**(1/2) = 1.96-TeV, Phys. Rev. Lett., vol. 98 no. 7 (2007), pp. 072001 [doi]
   (last updated on 2026/01/18)

   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 p[overline p] collisions at sqrt(s)=1.96 TeV acquired by the upgraded Collider Detector at Fermilab. For the decay t-->Wb-->[script-l]nub (where [script-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$\pm$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.