Studying top quark decay into the polarized W boson in the topcolor-assisted technicolor model
- CCAST (World Laboratory), P.O. Box 8730, Beijing, 100080 (China)
- College of Physics and Information Engineering, Henan Normal University, Xinxiang, Henan, 453007 (China)
We study the decay mode of the top quark decaying into Wb in the topcolor-assisted technicolor (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{yields}bW) is generally several percent and the maximum value can reach 8% for the currently allowed parameters. The magnitude of such a correction is comparable with the QCD correction and larger than that of the minimal supersymmetric model. Such a 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.
- OSTI ID:
- 20705732
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 71, Issue 1; Other Information: DOI: 10.1103/PhysRevD.71.014035; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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