Studying top quark decay into the polarized W-boson in the TC2 model

Abstract

We study the decay mode of top quark decaying into Wb in the TC2 model where the top quark is distinguished from other fermions by participating in a strong interaction. We find that the TC2 correction to the decay width $\Gamma (t\to bW)$ is generally several percent and maximum value can reach 8% for the currently allowed parameters. The magnitude of such correction is comparable with QCD correction and larger than that of minimal supersymmetric model. Such correction might be observable in the future colliders. We also study the TC2 correction to the branching ratio of top quark decay into the polarized W bosons and find the correction is below $1$. After considering the TC2 correction, we find that our theoretical predictions about the decay branching ratio are also consistent with the experimental data.

8 pages, 4 figures

References in corpus (3)

• Multi-Parton Amplitudes in Gauge Theories
• A Precision Measurement of the Mass of the Top Quark
• Probing Topcolor-Assisted Technicolor from Like-sign Top Pair Production at LHC

Cited by in corpus (17)

• Single top quark production at LHC with anomalous Wtb couplings
• Probing anomalous Wtb couplings in top pair decays
• W polarisation beyond helicity fractions in top quark decays
• Collider aspects of flavour physics at high Q
• ATLAS sensitivity to top quark and W boson polarization in $t\bar{t}$ events
• General Analysis of Single Top Production and W Helicity in Top Decay
• ATLAS sensitivity to Wtb anomalous couplings in top quark decays
• The Top Quark Decay Vertex in Standard Model Extensions
• Model-independent measurement of the W boson helicity in top quark decays
• Semi-Leptonic Decay of a Polarized Top Quark in the Noncommutative Standard Model
• Measurement of the Helicity Fractions of W Bosons from Top Quark Decays Using Fully Reconstructed top-antitop Events with CDF II
• Review of Properties of the Top Quark from Measurements at the Tevatron
• Noncommutative Standard Model in Top Quark Sector
• Search for Anomalous Couplings in Top Decay at Hadron Colliders
• tbW vertex in the Littlest Higgs Model with T-parity
• Spontaneous CP Symmetry Breaking at the Electroweak Scale
• Azimuthal polarization of polarized top quark in noncommutative standard model