Effects of the FCNC couplings in production of new heavy quarks within Z' models at the LHC

2015/12/02 by V. Cetinkaya, Cetinkaya, V., V. Ari +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.1512.00630

17 pages, 18 figures, update. arXiv admin note: text overlap with arXiv:1003.3156

arxiv created 2016/03/21 · arxiv updated 2016/03/22

Abstract

We study the flavor changing neutral current couplings of new heavy quarks through the Z' models at the LHC. We calculate the cross sections for the signal and the corresponding standard model background processes. Considering the present limits on the mass of new heavy quarks and the Z' boson, we performed an analysis to investigate the parameter space (mixing and mass) through different Z' models. For an FCNC mixing parameter x=0.1 and the Z' mass M_Z'=2000 GeV, and new heavy quark mass m_t'=700 GeV at the LHC with √(s)=13 TeV, we find the cross section for single production of new heavy quarks associated with top quarks as 5.8 fb, 3.3 fb, 1.5 fb and 1.2 fb within the Z'_η , Z'_ψ , Z'_LP and Z'_χ models, respectively. It is shown that the sensitivity would benefit from the flavor tagging.

Citations

• Search for Top Quark FCNC Couplings in Z' Models at the LHC and CLIC

Related

• On the Role of LHC and HL-LHC in Constraining Flavor Changing Neutral Currents
• FCNC Top Quark Production via Anomalous Couplings
• Production of tγ, tZ and tH via Flavour Changing Neutral Currents
• Production and decay of up-type and down-type new heavy quarks through anomalous interactions at the LHC
• Comparison of Diagnostic Z' Physics at Future pp and e+e- Colliders