2014/09/04 by Alexey Gulov, Gulov, Alexey, Andrey Kozhushko +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.1409.1301
Added references and some supplemental info. Corrected "Z-Z' interference" to "Z-Z' mixing". Will be further updated and extended before for publishing. 12 pages, 6 figures, the paper is essentially rewritten arXiv:1209.5022 with many shortcomings corrected
arxiv created 2016/01/31 · arxiv updated 2016/02/02
We propose a scheme of searches for the Abelian Z' gauge boson in the Drell-Yan process at √(S)=1.96 TeV. We base our considerations on renor\-ma\-li\-za\-tion-group relations between the Z' couplings to standard-model fermions. Considering the range of energies near the Z-boson peak, namely 66-116 GeV for the invariant mass of a leptonic pair, we propose an integration scheme to construct two-parametric observables suitable for Z' searches in the pp → l+ l- scattering. The observables allow to constrain the Z' vector and axial-vector couplings to SM fermions in a general phenomenological parameterization with non-universal Z' interactions with fermion generations. We also consider the cases of generation-universal Z' boson and leptophobic Z' boson, and show that one-parametric observables exist for these scenarios. The research is aimed to supplement direct searches for Z' as an on-shell state in a specific set of new-physics models.