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Related papers: Topcolor Assisted Technicolor

200 papers

We discuss a model which involves the top quark condensation and the walking technicolor. We focus on the scalar boson in such a model from the viewpoint of the observed scalar boson at the LHC.

High Energy Physics - Phenomenology · Physics 2017-08-23 Hidenori S. Fukano , Kimmo Tuominen

We present a class of models in which the top quark, by mixing with new physics at a higher energy scale, is naturally heavier than the other standard model particles. We take this new physics to be extended color. Our models contain new…

High Energy Physics - Phenomenology · Physics 2007-05-23 Oscar F. Hernandez

In Topcolor theories the mass of the top quark is generated dynamically by new strong interactions coupling to the third generation fermions. This leads to potentially observable effects in flavor-changing neutral current processes…

High Energy Physics - Phenomenology · Physics 2007-05-23 Dimitris Kominis

Since the pioneering work of Eichten and Lane it has been known that the scale of the interactions responsible for the generation of the strange-quark mass in extended technicolor theories must, absent any "GIM-like" mechanism for…

High Energy Physics - Lattice · Physics 2014-11-21 R. Sekhar Chivukula , Elizabeth H. Simmons

It is shown that a technicolor theory containing a color-octet technipion, usually denoted by $P^{0'}_{8}$, will give rise to an enhancement of $t \bar t$ production at the Tevatron, LHC and SSC, via the process $gg \rightarrow P^{0'}_{8}…

High Energy Physics - Phenomenology · Physics 2009-10-22 Thomas Appelquist , George Triantaphyllou

A brief overview of some of the last decade's developments in the Top-mode/Topcolor class of models is presented. In addition, a new Topcolor type scenario, named Top-Bottom Color, is suggested. A seesaw mechanism with new weak doublet…

High Energy Physics - Phenomenology · Physics 2007-05-23 Marko B. Popovic

We construct a complete, realistic, and natural UV completion of minimal conformal technicolor that explains the origin of quark and lepton masses and mixing angles. As in "bosonic technicolor", we embed conformal technicolor in a…

High Energy Physics - Phenomenology · Physics 2015-05-20 Jared A. Evans , Jamison Galloway , Markus A. Luty , Ruggero Altair Tacchi

We consider a model of strong dynamics able to account for the origin of the electroweak symmetry breaking and heavy quark masses. The model is based on a technicolor sector, augmented with topcolor and top-seesaw mechanism to assist in the…

High Energy Physics - Phenomenology · Physics 2012-10-26 Hidenori S. Fukano , Kimmo Tuominen

The nontrivial boundary conditions for the Topcolor breaking are investigated in the context of the TeV-scale extra dimension scenario. We present a six dimensional model where the top and bottom quarks in the bulk have the Topcolor charge…

High Energy Physics - Phenomenology · Physics 2007-05-23 Michio Hashimoto

We propose a renormalizable model with no fundamental scalars which breaks itself in the manner of a "tumbling" gauge theory down to the standard model with a top-quark condensate. Because of anomaly cancellation requirements, this model…

High Energy Physics - Phenomenology · Physics 2009-10-22 Stephen P. Martin

The topcolor-assisted technicolor (TC2) model predicts the existence of the charged top-pions ($\pi_t^\pm$), whose large couplings with the third generation fermions will induce the charged top-pion production associated with the bottom and…

High Energy Physics - Phenomenology · Physics 2011-08-09 Guoli Liu , Ping Zhou

We consider a theory with composite top quarks but an elementary Higgs boson. The hierarchy problem can be solved by supplementing TeV scale top compositeness with either supersymmetry or Higgs compositeness appearing at the multi-TeV…

High Energy Physics - Phenomenology · Physics 2017-02-01 Aaron Pierce , Yue Zhao

Pair-production of heavy top quarks at the Tevatron Collider is significantly enhanced by the color--octet technipion, $\eta_T$, occurring in multiscale models of walking technicolor. We discuss $\bar tt$ rates for $m_t = 170$ GeV and…

High Energy Physics - Phenomenology · Physics 2009-10-28 Estia Eichten , Kenneth Lane

We propose to probe the topcolor-assisted technicolor (TC2) model from the top-charm associated productions at the LHC, which are highly suppressed in the Standard Model. Due to the flavor-changing couplings of the top quark with the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Junjie Cao , Zhaohua Xiong , Jin Min Yang

In the context of topcolor-assisted technicolor (TC2) models, we consider the process $e^{+}e^{-}\to \nu\bar{\nu}\gamma$ and calculate the cross section of this process at leading order.It is shown that the extra U(1) gauge boson…

High Energy Physics - Phenomenology · Physics 2008-11-26 Chongxing Yue , Hongjie Zong , Wei Wang

We estimate the correction to the Zbb-bar vertex arising from the exchanges of the sideways extended technicolor (ETC) boson and the flavor-diagonal ETC boson in the multiscale walking technicolor model. The obtained result is too large to…

High Energy Physics - Phenomenology · Physics 2008-11-26 Chong-Xing Yue , Yu-Ping Kuang , Gong-Ru Lu

The extended technicolor theory is a candidate of the physics beyond the standard model. To explain the mass hierarchy of the quarks and leptons, the extended technicolor gauge symmetry must hierarchically break to the technicolor gauge…

High Energy Physics - Phenomenology · Physics 2007-05-23 Noriaki Kitazawa

The topcolor-assisted technicolor (TC2) theory predicts tree-level flavor-changing neutral-current (FCNC) top quark Yukawa couplings with top-pions. Such FCNC interactions will induce like-sign top quark pair productions at CERN Large…

High Energy Physics - Phenomenology · Physics 2008-11-26 Junjie Cao , Guoli Liu , Jin Min Yang

I discuss production and detection at the Tevatron $\pbarp$ collider of pairs of light ($\mpi = 100$--$200\,\gev$) color--singlet technipions that are expected in all nonminimal models of technicolor. Gluon fusion production rates can be as…

High Energy Physics - Phenomenology · Physics 2009-10-28 Kenneth Lane

We study pseudo-Goldstone boson corrections to top quark pair production rates in technicolor models with and without topcolor at the E=0.5 teV and 1.5 TeV photon colliders. We find that, for reasonable ranges of the parameters, the…

High Energy Physics - Phenomenology · Physics 2008-12-25 Hong-Yi Zhou , Yu-Ping Kuang , Chong-Xing Yue , Hua Wang , Gong-Ru Lu