Color Sextet Vector Bosons and Same-Sign Top Quark Pairs at the LHC
Hao Zhang, Edmond L. Berger, Qing-Hong Cao, Chuan-Ren Chen, Gabe, Shaughnessy
TL;DR
This paper explores how color-sextet vector bosons produced at the LHC decay into same-sign top pairs, and how lepton energy distributions reveal their quantum properties and polarization states.
Contribution
It introduces a method to determine the quantum numbers of new vector bosons via top polarization analysis at the LHC.
Findings
Lepton energy effectively measures top polarization.
Top polarization distinguishes vector bosons from scalars.
Method enhances identification of new physics signals.
Abstract
We investigate the production of beyond-the-standard-model color-sextet vector bosons at the Large Hadron Collider and their decay into a pair of same-sign top quarks. We demonstrate that the energy of the charged lepton from the top quark semi-leptonic decay serves as a good measure of the top-quark polarization, which, in turn determines the quantum numbers of the boson and distinguishes vector bosons from scalars.
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