t anti-t Production Rates at the Tevatron and the LHC in Topcolor- Assisted Multiscale Technicolor Models

Abstract

We study the contributions of the neutral pseudo Goldstone bosons (technipions and top-pions) to the t anti-t production cross sections at the Tevatron and the LHC in topcolor-assisted multiscale technicolor (TOPCMTC) models via the gluon-gluon fusion process from the loop-level couplings between the pseudo Goldstone bosons and the gluons. The MRS set A' parton distributions are used in the calculation. It is shown that the new CDF datum on the t anti-t production cross section gives constraints on the parameters in the TOPCMTC models. With reasonable values of the parameters in TOPCMTC models, the cross section at the Tevatron is larger than that predicted by the standard model, and is consistent with the new CDF data. The enhancement of the cross section and the resonance peaks at the LHC are more significant, so that it is testable in future experiments.

arXiv comment16 pages in RevTex, 9 postscript figures

References in corpus (13)

• Observation of Top Quark Production in Pbar-P Collisions
• Topcolor Assisted Technicolor
• Pinning down the Glue in the Proton
• Top Quark Production Cross Section
• Walking Technicolor and Electroweak Radiative Corrections
• Revenge of the One-Family Technicolor Models
• Multiscale Technicolor and Top Production
• Spontaneously Broken Technicolor and the Dynamics of Virtual Vector Technimesons
• Technipion contribution to $b\to s\gamma$
• Nonoblique Corrections in Technicolor Theories Revisited
• Color-Singlet Technipions at the Tevatron
• Radiative Corrections to the Z-b-(anti-b) and Z-tau-(anti-tau) Vertices in a Realistic One-Family Extended Technicolor Model
• A New Physics Source of Hard Gluons in Top Quark Production

Cited by in corpus (10)

• The "Top Priority" at the LHC
• Neutral top-pion and top-charm production in high energy $e^{+}{e}^{-}$ collisions
• The flavor-changing rare top decays $t\to cVV$ in topcolor-assisted technicolor theory
• Testing Technicolor Models in Top Quark Pair Production at High Energy Photon Colliders
• Detecting top-Higgs at high energy $e^{+}{e}^{-}$ colliders
• Single top Quark Production in e-gamma Collisions and Testing Technicolor Models
• Signatures of the neutral top-pion in $e\gamma$ collisions
• Pseudo-Goldstone Boson Effects in Top-Antitop Productions at High Energy Hadron Colliders and Testing Technicolor Models
• Yukawa Corrections to gamma gamma --> b\bar{b} in the Topcolor Assisted Technicolor Models
• Testing Technicolor Models via Top Quark Pair Production in High Energy Photon Collisions