Influence of Z' boson on top quark spin correlations at the LHC

Abstract

We study top-antitop pair production and top spin correlations in a model with an electrically neutral massive gauge boson, Z', at the Large Hadron Collider. In addition to the Standard Model processes, the Z' contributes to the top-antitop pair production process in the s-channel. Choosing a kinematical region of top invariant mass around the Z' resonance pole, we find sizable deviations of the top-antitop pair production cross section and the top spin correlations from those of the Standard Model.

arXiv comment20 pages, 4 figures, 1 table, minor changes made, version to appear in Acta Physica Polonica B

References in corpus (5)

• The Physics of Heavy Z' Gauge Bosons
• Z' Phenomenology and the LHC
• Measuring Z' couplings at the LHC
• Precision predictions for Z'-production at the CERN LHC: QCD matrix elements, parton showers, and joint resummation
• Searching for Extra Z' from Strings and Other Models at the LHC with Leptoproduction

Cited by in corpus (8)

• The minimal B-L model naturally realized at TeV scale
• The Hunt for New Physics at the Large Hadron Collider
• Measurements of spin correlation in top-antitop quark events from proton-proton collisions at $\sqrt{s}=7$ TeV using the ATLAS detector
• Color Triplet Diquarks at the LHC
• Measurement of the correlations between the polar angles of leptons from top quark decays in the helicity basis at $\sqrt{s}=7$TeV using the ATLAS detector
• Z' signals in polarised top-antitop final states
• Non-exotic $Z^{\prime }$ signals in ${\ell }^{+}{\ell }^{-}$, $b\bar{b}$ and $t\bar{t}$ final states at the LHC
• One-loop effects on top pair production in the littlest Higgs model with T-parity at the LHC