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Title: Studying top quark decay into the polarized W boson in the topcolor-assisted technicolor model

Abstract

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.

Authors:
 [1]; ;  [2]
  1. CCAST (World Laboratory), P.O. Box 8730, Beijing, 100080 (China)
  2. College of Physics and Information Engineering, Henan Normal University, Xinxiang, Henan, 453007 (China)
Publication Date:
OSTI Identifier:
20705732
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 71; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevD.71.014035; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BRANCHING RATIO; CORRECTIONS; PARTICLE DECAY; PARTICLE WIDTHS; QUANTUM CHROMODYNAMICS; STRONG INTERACTIONS; SUPERSYMMETRY; T QUARKS; W MINUS BOSONS; W PLUS BOSONS

Citation Formats

Xuelei, Wang, College of Physics and Information Engineering, Henan Normal University, Xinxiang, Henan, 453007, Qiaoli, Zhang, and Qingpeng, Qiao. Studying top quark decay into the polarized W boson in the topcolor-assisted technicolor model. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.71.014035.
Xuelei, Wang, College of Physics and Information Engineering, Henan Normal University, Xinxiang, Henan, 453007, Qiaoli, Zhang, & Qingpeng, Qiao. Studying top quark decay into the polarized W boson in the topcolor-assisted technicolor model. United States. https://doi.org/10.1103/PhysRevD.71.014035
Xuelei, Wang, College of Physics and Information Engineering, Henan Normal University, Xinxiang, Henan, 453007, Qiaoli, Zhang, and Qingpeng, Qiao. 2005. "Studying top quark decay into the polarized W boson in the topcolor-assisted technicolor model". United States. https://doi.org/10.1103/PhysRevD.71.014035.
@article{osti_20705732,
title = {Studying top quark decay into the polarized W boson in the topcolor-assisted technicolor model},
author = {Xuelei, Wang and College of Physics and Information Engineering, Henan Normal University, Xinxiang, Henan, 453007 and Qiaoli, Zhang and Qingpeng, Qiao},
abstractNote = {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.},
doi = {10.1103/PhysRevD.71.014035},
url = {https://www.osti.gov/biblio/20705732}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 1,
volume = 71,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2005},
month = {Sat Jan 01 00:00:00 EST 2005}
}