Non-commuting ETC corrections to zt\bar{t} vertex

Abstract

In this paper we calculate the corrections to zt\bar {t} couplings induced by non-commuting ETC interactions. The extra parameters \delgbl, s^2 and {1\over x} of non-commuting ETC models and the usual SM parameters will be be assumed to be determined from a global fit to the LEP 1 EW data. We find that in the heavy (light) case F^t_L is modified by at most 4% (2.8%) relative to its SM value provided \delrb < .0088. This implies that it will be very difficult to disentangle the ETC corrections from SM corrections to zt\bar {t} vertex or to probe the effects of non-commuting ETC on zt\bar {t} couplings with the projected NLC precision of measuring them.

zt\bar{t} vertex corrections are calculated both in the heavy and light cases of non-commuting ETC

Cited by in corpus (10)

• Probing Electroweak Top Quark Couplings at Hadron Colliders
• Measurement of the $t\bar{t}Z$ and $t\bar{t}W$ production cross sections in multilepton final states using 3.2 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Measurement of the $t\bar{t}W$ and $t\bar{t}Z$ production cross sections in $pp$ collisions at $\sqrt{s}=8\mathrm{Te}\mathrm{V}$ with the ATLAS detector
• QCD Corrections to Static Heavy Quark Form Factors
• Improved Measurement of ttZ Couplings at the LHC
• The Effective Electroweak Chiral Lagrangian: The Matter Sector
• Inclusive and differential cross-section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin-correlation interpretations
• One-loop QCD and electroweak corrections to $t\bar{t}{Z}^0$ production at an $e^{+}{e}^{-}$ linear collider
• SUSY QCD impact on top-pair production associated with a $Z^0$-boson at a photon-photon collider
• Measurement of high-mass $t\bar{t}{\ell }^{+}{\ell }^{-}$ production and lepton flavour universality-inspired effective field theory interpretations at $\sqrt{s}=13$ TeV with the ATLAS detector